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path: root/drivers/char/ipmi
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2018-02-26ipmi: add a KCS IPMI BMC driverHaiyue Wang4-0/+574
Provides a device driver for the KCS (Keyboard Controller Style) IPMI interface which meets the requirement of the BMC (Baseboard Management Controllers) side for handling the IPMI request from host system software. Signed-off-by: Haiyue Wang <haiyue.wang@linux.intel.com> [Removed the selectability of IPMI_KCS_BMC, as it doesn't do much good to have it by itself.] Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-02-12vfs: do bulk POLL* -> EPOLL* replacementLinus Torvalds3-4/+4
This is the mindless scripted replacement of kernel use of POLL* variables as described by Al, done by this script: for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'` for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done done with de-mangling cleanups yet to come. NOTE! On almost all architectures, the EPOLL* constants have the same values as the POLL* constants do. But they keyword here is "almost". For various bad reasons they aren't the same, and epoll() doesn't actually work quite correctly in some cases due to this on Sparc et al. The next patch from Al will sort out the final differences, and we should be all done. Scripted-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-01Merge tag 'driver-core-4.16-rc1' of ↵Linus Torvalds1-9/+8
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the set of "big" driver core patches for 4.16-rc1. The majority of the work here is in the firmware subsystem, with reworks to try to attempt to make the code easier to handle in the long run, but no functional change. There's also some tree-wide sysfs attribute fixups with lots of acks from the various subsystem maintainers, as well as a handful of other normal fixes and changes. And finally, some license cleanups for the driver core and sysfs code. All have been in linux-next for a while with no reported issues" * tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (48 commits) device property: Define type of PROPERTY_ENRTY_*() macros device property: Reuse property_entry_free_data() device property: Move property_entry_free_data() upper firmware: Fix up docs referring to FIRMWARE_IN_KERNEL firmware: Drop FIRMWARE_IN_KERNEL Kconfig option USB: serial: keyspan: Drop firmware Kconfig options sysfs: remove DEBUG defines sysfs: use SPDX identifiers drivers: base: add coredump driver ops sysfs: add attribute specification for /sysfs/devices/.../coredump test_firmware: fix missing unlock on error in config_num_requests_store() test_firmware: make local symbol test_fw_config static sysfs: turn WARN() into pr_warn() firmware: Fix a typo in fallback-mechanisms.rst treewide: Use DEVICE_ATTR_WO treewide: Use DEVICE_ATTR_RO treewide: Use DEVICE_ATTR_RW sysfs.h: Use octal permissions component: add debugfs support bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate ...
2018-01-31Merge tag 'for-linus-4.16-1' of git://github.com/cminyard/linux-ipmiLinus Torvalds7-14/+21
Pull IPMI updates from Corey Minyard: "Small fixes for various things, been sitting in next for a while (some a long time)" * tag 'for-linus-4.16-1' of git://github.com/cminyard/linux-ipmi: ipmi_ssif: Remove duplicate NULL check ipmi/powernv: Fix error return code in ipmi_powernv_probe() ipmi: use dynamic memory for DMI driver override ipmi/ipmi_powernv: remove outdated todo in powernv IPMI driver ipmi: Clear smi_info->thread to prevent use-after-free during module unload ipmi: use correct string length ipmi_si: Fix error handling of platform device ipmi watchdog: fix typo in parameter description ipmi_si_platform: Fix typo in parameter description
2018-01-31Merge branch 'misc.poll' of ↵Linus Torvalds3-6/+6
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull poll annotations from Al Viro: "This introduces a __bitwise type for POLL### bitmap, and propagates the annotations through the tree. Most of that stuff is as simple as 'make ->poll() instances return __poll_t and do the same to local variables used to hold the future return value'. Some of the obvious brainos found in process are fixed (e.g. POLLIN misspelled as POLL_IN). At that point the amount of sparse warnings is low and most of them are for genuine bugs - e.g. ->poll() instance deciding to return -EINVAL instead of a bitmap. I hadn't touched those in this series - it's large enough as it is. Another problem it has caught was eventpoll() ABI mess; select.c and eventpoll.c assumed that corresponding POLL### and EPOLL### were equal. That's true for some, but not all of them - EPOLL### are arch-independent, but POLL### are not. The last commit in this series separates userland POLL### values from the (now arch-independent) kernel-side ones, converting between them in the few places where they are copied to/from userland. AFAICS, this is the least disruptive fix preserving poll(2) ABI and making epoll() work on all architectures. As it is, it's simply broken on sparc - try to give it EPOLLWRNORM and it will trigger only on what would've triggered EPOLLWRBAND on other architectures. EPOLLWRBAND and EPOLLRDHUP, OTOH, are never triggered at all on sparc. With this patch they should work consistently on all architectures" * 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits) make kernel-side POLL... arch-independent eventpoll: no need to mask the result of epi_item_poll() again eventpoll: constify struct epoll_event pointers debugging printk in sg_poll() uses %x to print POLL... bitmap annotate poll(2) guts 9p: untangle ->poll() mess ->si_band gets POLL... bitmap stored into a user-visible long field ring_buffer_poll_wait() return value used as return value of ->poll() the rest of drivers/*: annotate ->poll() instances media: annotate ->poll() instances fs: annotate ->poll() instances ipc, kernel, mm: annotate ->poll() instances net: annotate ->poll() instances apparmor: annotate ->poll() instances tomoyo: annotate ->poll() instances sound: annotate ->poll() instances acpi: annotate ->poll() instances crypto: annotate ->poll() instances block: annotate ->poll() instances x86: annotate ->poll() instances ...
2018-01-22ipmi_ssif: Remove duplicate NULL checkAndy Shevchenko1-2/+1
Since i2c_unregister_device() became NULL-aware we may remove duplicate NULL check. Cc: Corey Minyard <minyard@acm.org> Cc: openipmi-developer@lists.sourceforge.net Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-22ipmi/powernv: Fix error return code in ipmi_powernv_probe()Wei Yongjun1-2/+3
Fix to return a negative error code from the request_irq() error handling case instead of 0, as done elsewhere in this function. Fixes: dce143c3381c ("ipmi/powernv: Convert to irq event interface") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-22ipmi: use dynamic memory for DMI driver overrideJohn Garry1-1/+4
Currently a crash can be seen if we reach the "err" label in dmi_add_platform_ipmi(), calling platform_device_put(), like here: [ 7.270584] (null): ipmi:dmi: Unable to add resources: -16 [ 7.330229] ------------[ cut here ]------------ [ 7.334889] kernel BUG at mm/slub.c:3894! [ 7.338936] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 7.344475] Modules linked in: [ 7.347556] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.15.0-rc2-00004-gbe9cb7b-dirty #114 [ 7.355907] Hardware name: Huawei Taishan 2280 /D05, BIOS Hisilicon D05 IT17 Nemo 2.0 RC0 11/29/2017 [ 7.365137] task: 00000000c211f6d3 task.stack: 00000000f276e9af [ 7.371116] pstate: 60000005 (nZCv daif -PAN -UAO) [ 7.375957] pc : kfree+0x194/0x1b4 [ 7.379389] lr : platform_device_release+0xcc/0xd8 [ 7.384225] sp : ffff0000092dba90 [ 7.387567] x29: ffff0000092dba90 x28: ffff000008a83000 [ 7.392933] x27: ffff0000092dbc10 x26: 00000000000000e6 [ 7.398297] x25: 0000000000000003 x24: ffff0000085b51e8 [ 7.403662] x23: 0000000000000100 x22: ffff7e0000234cc0 [ 7.409027] x21: ffff000008af3660 x20: ffff8017d21acc10 [ 7.414392] x19: ffff8017d21acc00 x18: 0000000000000002 [ 7.419757] x17: 0000000000000001 x16: 0000000000000008 [ 7.425121] x15: 0000000000000001 x14: 6666666678303d65 [ 7.430486] x13: 6469727265766f5f x12: 7265766972642e76 [ 7.435850] x11: 6564703e2d617020 x10: 6530326435373638 [ 7.441215] x9 : 3030303030303030 x8 : 3d76656420657361 [ 7.446580] x7 : ffff000008f59df8 x6 : ffff8017fbe0ea50 [ 7.451945] x5 : 0000000000000000 x4 : 0000000000000000 [ 7.457309] x3 : ffffffffffffffff x2 : 0000000000000000 [ 7.462674] x1 : 0fffc00000000800 x0 : ffff7e0000234ce0 [ 7.468039] Process swapper/0 (pid: 1, stack limit = 0x00000000f276e9af) [ 7.474809] Call trace: [ 7.477272] kfree+0x194/0x1b4 [ 7.480351] platform_device_release+0xcc/0xd8 [ 7.484837] device_release+0x34/0x90 [ 7.488531] kobject_put+0x70/0xcc [ 7.491961] put_device+0x14/0x1c [ 7.495304] platform_device_put+0x14/0x1c [ 7.499439] dmi_add_platform_ipmi+0x348/0x3ac [ 7.503923] scan_for_dmi_ipmi+0xfc/0x10c [ 7.507970] do_one_initcall+0x38/0x124 [ 7.511840] kernel_init_freeable+0x188/0x228 [ 7.516238] kernel_init+0x10/0x100 [ 7.519756] ret_from_fork+0x10/0x18 [ 7.523362] Code: f94002c0 37780080 f94012c0 37000040 (d4210000) [ 7.529552] ---[ end trace 11750e4787deef9e ]--- [ 7.534228] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 7.534228] This is because when the device is released in platform_device_release(), we try to free pdev.driver_override. This is a const string, hence the crash. Fix by using dynamic memory for pdev->driver_override. Signed-off-by: John Garry <john.garry@huawei.com> [Removed the free of driver_override from ipmi_si_remove_by_dev(). The free is done in platform_device_release(), and would result in a double free, and ipmi_si_remove_by_dev() is called by non-platform devices.] Signed-off-by: Corey Minyard <cminyard@mvista.com> Cc: <stable@vger.kernel.org> # 4.14+
2018-01-17ipmi/ipmi_powernv: remove outdated todo in powernv IPMI driverJeremy Kerr1-1/+0
Since the IPMI core now queries device IDs dynamically, we no longer need this todo for implementing this in the powernv driver. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-16ipmi: Clear smi_info->thread to prevent use-after-free during module unloadMasamitsu Yamazaki1-1/+3
During code inspection, I found an use-after-free possibility during unloading ipmi_si in the polling mode. If start_new_msg() is called after kthread_stop(), the function will try to wake up non-existing kthread using the dangling pointer. Possible scenario is when a new internal message is generated after ipmi_unregister_smi()[*1] and remains after stop_timer_and_thread() in clenaup_one_si() [*2]. Use-after-free could occur as follows depending on BMC replies. cleanup_one_si => ipmi_unregister_smi [*1] => stop_timer_and_thread => kthread_stop(smi_info->thread) [*2] => poll => smi_event_handler => start_new_msg => if (smi_info->thread) wake_up_process(smi_info->thread) <== use-after-free!! Although currently it seems no such message is generated in the polling mode, some changes might introduce that in thefuture. For example in the interrupt mode, disable_si_irq() does that at [*2]. So let's prevent such a critical issue possibility now. Signed-off-by: Yamazaki Masamitsu <m-yamazaki@ah.jp.nec.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2018-01-09treewide: Use DEVICE_ATTR_ROJoe Perches1-9/+8
Convert DEVICE_ATTR uses to DEVICE_ATTR_RO where possible. Done with perl script: $ git grep -w --name-only DEVICE_ATTR | \ xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IRUGO\s*|\s*0444\s*)\)?\s*,\s*\1_show\s*,\s*NULL\s*\)/DEVICE_ATTR_RO(\1)/g; print;}' Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Sagi Grimberg <sagi@grimberg.me> Acked-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09ipmi: use correct string lengthXiongfeng Wang2-2/+2
gcc-8 reports drivers/char/ipmi/ipmi_msghandler.c: In function 'panic_op_write_handler': ./include/linux/string.h:245:9: warning: '__builtin_strncpy' specified bound 16 equals destination size [-Wstringop-truncation] drivers/char/ipmi/ipmi_watchdog.c: In function 'set_param_str': ./include/linux/string.h:245:9: warning: '__builtin_strncpy' specified bound 16 equals destination size [-Wstringop-truncation] We need one less byte or call strlcpy() to make it a nul-terminated string. Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-12ipmi_si: Fix error handling of platform deviceCorey Minyard1-3/+6
Cleanup of platform devices created by the IPMI driver was not being done correctly and could result in a memory leak. So create a local boolean to know how to clean up those platform devices. Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-12ipmi watchdog: fix typo in parameter descriptionWei Yongjun1-1/+1
Fix typo in parameter description. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-12ipmi_si_platform: Fix typo in parameter descriptionWei Yongjun1-1/+1
Fix typo in parameter description. Fixes: 95e300c052fd ("ipmi: Make the DMI probe into a generic platform probe") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-12Merge tag 'for-linus-4.15-2' of git://github.com/cminyard/linux-ipmiLinus Torvalds3-23/+30
Pull IPMI fixes from Corey Minyard. * tag 'for-linus-4.15-2' of git://github.com/cminyard/linux-ipmi: ipmi_si: fix crash on parisc ipmi_si: Fix oops with PCI devices ipmi: Stop timers before cleaning up the module
2017-12-11ipmi_si: fix crash on pariscMikulas Patocka1-0/+2
This patch fixes ipmi crash on parisc introduced in the kernel 4.15-rc. The pointer io.io_setup is not initialized and thus it causes crash in try_smi_init when attempting to call new_smi->io.io_setup. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-12-11ipmi_si: Fix oops with PCI devicesCorey Minyard1-2/+5
When the IPMI PCI code was split out, some code was consolidated for setting the io_setup field in the io structure. The PCI code needed this set before registration to probe register spacing, though, so restore the old code for that function. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197999 Signed-off-by: Corey Minyard <cminyard@mvista.com> Tested-by: Meelis Roos <mroos@linux.ee>
2017-12-06ipmi: Stop timers before cleaning up the moduleMasamitsu Yamazaki1-21/+23
System may crash after unloading ipmi_si.ko module because a timer may remain and fire after the module cleaned up resources. cleanup_one_si() contains the following processing. /* * Make sure that interrupts, the timer and the thread are * stopped and will not run again. */ if (to_clean->irq_cleanup) to_clean->irq_cleanup(to_clean); wait_for_timer_and_thread(to_clean); /* * Timeouts are stopped, now make sure the interrupts are off * in the BMC. Note that timers and CPU interrupts are off, * so no need for locks. */ while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { poll(to_clean); schedule_timeout_uninterruptible(1); } si_state changes as following in the while loop calling poll(to_clean). SI_GETTING_MESSAGES => SI_CHECKING_ENABLES => SI_SETTING_ENABLES => SI_GETTING_EVENTS => SI_NORMAL As written in the code comments above, timers are expected to stop before the polling loop and not to run again. But the timer is set again in the following process when si_state becomes SI_SETTING_ENABLES. => poll => smi_event_handler => handle_transaction_done // smi_info->si_state == SI_SETTING_ENABLES => start_getting_events => start_new_msg => smi_mod_timer => mod_timer As a result, before the timer set in start_new_msg() expires, the polling loop may see si_state becoming SI_NORMAL and the module clean-up finishes. For example, hard LOCKUP and panic occurred as following. smi_timeout was called after smi_event_handler, kcs_event and hangs at port_inb() trying to access I/O port after release. [exception RIP: port_inb+19] RIP: ffffffffc0473053 RSP: ffff88069fdc3d80 RFLAGS: 00000006 RAX: ffff8806800f8e00 RBX: ffff880682bd9400 RCX: 0000000000000000 RDX: 0000000000000ca3 RSI: 0000000000000ca3 RDI: ffff8806800f8e40 RBP: ffff88069fdc3d80 R8: ffffffff81d86dfc R9: ffffffff81e36426 R10: 00000000000509f0 R11: 0000000000100000 R12: 0000000000]:000000 R13: 0000000000000000 R14: 0000000000000246 R15: ffff8806800f8e00 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0000 --- <NMI exception stack> --- To fix the problem I defined a flag, timer_can_start, as member of struct smi_info. The flag is enabled immediately after initializing the timer and disabled immediately before waiting for timer deletion. Fixes: 0cfec916e86d ("ipmi: Start the timer and thread on internal msgs") Signed-off-by: Yamazaki Masamitsu <m-yamazaki@ah.jp.nec.com> [Adjusted for recent changes in the driver.] Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-11-28the rest of drivers/*: annotate ->poll() instancesAl Viro3-6/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-22treewide: setup_timer() -> timer_setup()Kees Cook4-13/+11
This converts all remaining cases of the old setup_timer() API into using timer_setup(), where the callback argument is the structure already holding the struct timer_list. These should have no behavioral changes, since they just change which pointer is passed into the callback with the same available pointers after conversion. It handles the following examples, in addition to some other variations. Casting from unsigned long: void my_callback(unsigned long data) { struct something *ptr = (struct something *)data; ... } ... setup_timer(&ptr->my_timer, my_callback, ptr); and forced object casts: void my_callback(struct something *ptr) { ... } ... setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr); become: void my_callback(struct timer_list *t) { struct something *ptr = from_timer(ptr, t, my_timer); ... } ... timer_setup(&ptr->my_timer, my_callback, 0); Direct function assignments: void my_callback(unsigned long data) { struct something *ptr = (struct something *)data; ... } ... ptr->my_timer.function = my_callback; have a temporary cast added, along with converting the args: void my_callback(struct timer_list *t) { struct something *ptr = from_timer(ptr, t, my_timer); ... } ... ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback; And finally, callbacks without a data assignment: void my_callback(unsigned long data) { ... } ... setup_timer(&ptr->my_timer, my_callback, 0); have their argument renamed to verify they're unused during conversion: void my_callback(struct timer_list *unused) { ... } ... timer_setup(&ptr->my_timer, my_callback, 0); The conversion is done with the following Coccinelle script: spatch --very-quiet --all-includes --include-headers \ -I ./arch/x86/include -I ./arch/x86/include/generated \ -I ./include -I ./arch/x86/include/uapi \ -I ./arch/x86/include/generated/uapi -I ./include/uapi \ -I ./include/generated/uapi --include ./include/linux/kconfig.h \ --dir . \ --cocci-file ~/src/data/timer_setup.cocci @fix_address_of@ expression e; @@ setup_timer( -&(e) +&e , ...) // Update any raw setup_timer() usages that have a NULL callback, but // would otherwise match change_timer_function_usage, since the latter // will update all function assignments done in the face of a NULL // function initialization in setup_timer(). @change_timer_function_usage_NULL@ expression _E; identifier _timer; type _cast_data; @@ ( -setup_timer(&_E->_timer, NULL, _E); +timer_setup(&_E->_timer, NULL, 0); | -setup_timer(&_E->_timer, NULL, (_cast_data)_E); +timer_setup(&_E->_timer, NULL, 0); | -setup_timer(&_E._timer, NULL, &_E); +timer_setup(&_E._timer, NULL, 0); | -setup_timer(&_E._timer, NULL, (_cast_data)&_E); +timer_setup(&_E._timer, NULL, 0); ) @change_timer_function_usage@ expression _E; identifier _timer; struct timer_list _stl; identifier _callback; type _cast_func, _cast_data; @@ ( -setup_timer(&_E->_timer, _callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, &_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, &_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)&_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E._timer, _callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, &_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, &_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | _E->_timer@_stl.function = _callback; | _E->_timer@_stl.function = &_callback; | _E->_timer@_stl.function = (_cast_func)_callback; | _E->_timer@_stl.function = (_cast_func)&_callback; | _E._timer@_stl.function = _callback; | _E._timer@_stl.function = &_callback; | _E._timer@_stl.function = (_cast_func)_callback; | _E._timer@_stl.function = (_cast_func)&_callback; ) // callback(unsigned long arg) @change_callback_handle_cast depends on change_timer_function_usage@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _origtype; identifier _origarg; type _handletype; identifier _handle; @@ void _callback( -_origtype _origarg +struct timer_list *t ) { ( ... when != _origarg _handletype *_handle = -(_handletype *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle = -(void *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(_handletype *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(void *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg ) } // callback(unsigned long arg) without existing variable @change_callback_handle_cast_no_arg depends on change_timer_function_usage && !change_callback_handle_cast@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _origtype; identifier _origarg; type _handletype; @@ void _callback( -_origtype _origarg +struct timer_list *t ) { + _handletype *_origarg = from_timer(_origarg, t, _timer); + ... when != _origarg - (_handletype *)_origarg + _origarg ... when != _origarg } // Avoid already converted callbacks. @match_callback_converted depends on change_timer_function_usage && !change_callback_handle_cast && !change_callback_handle_cast_no_arg@ identifier change_timer_function_usage._callback; identifier t; @@ void _callback(struct timer_list *t) { ... } // callback(struct something *handle) @change_callback_handle_arg depends on change_timer_function_usage && !match_callback_converted && !change_callback_handle_cast && !change_callback_handle_cast_no_arg@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; @@ void _callback( -_handletype *_handle +struct timer_list *t ) { + _handletype *_handle = from_timer(_handle, t, _timer); ... } // If change_callback_handle_arg ran on an empty function, remove // the added handler. @unchange_callback_handle_arg depends on change_timer_function_usage && change_callback_handle_arg@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; identifier t; @@ void _callback(struct timer_list *t) { - _handletype *_handle = from_timer(_handle, t, _timer); } // We only want to refactor the setup_timer() data argument if we've found // the matching callback. This undoes changes in change_timer_function_usage. @unchange_timer_function_usage depends on change_timer_function_usage && !change_callback_handle_cast && !change_callback_handle_cast_no_arg && !change_callback_handle_arg@ expression change_timer_function_usage._E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type change_timer_function_usage._cast_data; @@ ( -timer_setup(&_E->_timer, _callback, 0); +setup_timer(&_E->_timer, _callback, (_cast_data)_E); | -timer_setup(&_E._timer, _callback, 0); +setup_timer(&_E._timer, _callback, (_cast_data)&_E); ) // If we fixed a callback from a .function assignment, fix the // assignment cast now. @change_timer_function_assignment depends on change_timer_function_usage && (change_callback_handle_cast || change_callback_handle_cast_no_arg || change_callback_handle_arg)@ expression change_timer_function_usage._E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_func; typedef TIMER_FUNC_TYPE; @@ ( _E->_timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -&_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -(_cast_func)_callback; +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -&_callback; +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -(_cast_func)_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; ) // Sometimes timer functions are called directly. Replace matched args. @change_timer_function_calls depends on change_timer_function_usage && (change_callback_handle_cast || change_callback_handle_cast_no_arg || change_callback_handle_arg)@ expression _E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_data; @@ _callback( ( -(_cast_data)_E +&_E->_timer | -(_cast_data)&_E +&_E._timer | -_E +&_E->_timer ) ) // If a timer has been configured without a data argument, it can be // converted without regard to the callback argument, since it is unused. @match_timer_function_unused_data@ expression _E; identifier _timer; identifier _callback; @@ ( -setup_timer(&_E->_timer, _callback, 0); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, 0L); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, 0UL); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0L); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0UL); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_timer, _callback, 0); +timer_setup(&_timer, _callback, 0); | -setup_timer(&_timer, _callback, 0L); +timer_setup(&_timer, _callback, 0); | -setup_timer(&_timer, _callback, 0UL); +timer_setup(&_timer, _callback, 0); | -setup_timer(_timer, _callback, 0); +timer_setup(_timer, _callback, 0); | -setup_timer(_timer, _callback, 0L); +timer_setup(_timer, _callback, 0); | -setup_timer(_timer, _callback, 0UL); +timer_setup(_timer, _callback, 0); ) @change_callback_unused_data depends on match_timer_function_unused_data@ identifier match_timer_function_unused_data._callback; type _origtype; identifier _origarg; @@ void _callback( -_origtype _origarg +struct timer_list *unused ) { ... when != _origarg } Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-17Merge branch 'misc.compat' of ↵Linus Torvalds1-6/+0
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull compat and uaccess updates from Al Viro: - {get,put}_compat_sigset() series - assorted compat ioctl stuff - more set_fs() elimination - a few more timespec64 conversions - several removals of pointless access_ok() in places where it was followed only by non-__ variants of primitives * 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (24 commits) coredump: call do_unlinkat directly instead of sys_unlink fs: expose do_unlinkat for built-in callers ext4: take handling of EXT4_IOC_GROUP_ADD into a helper, get rid of set_fs() ipmi: get rid of pointless access_ok() pi433: sanitize ioctl cxlflash: get rid of pointless access_ok() mtdchar: get rid of pointless access_ok() r128: switch compat ioctls to drm_ioctl_kernel() selection: get rid of field-by-field copyin VT_RESIZEX: get rid of field-by-field copyin i2c compat ioctls: move to ->compat_ioctl() sched_rr_get_interval(): move compat to native, get rid of set_fs() mips: switch to {get,put}_compat_sigset() sparc: switch to {get,put}_compat_sigset() s390: switch to {get,put}_compat_sigset() ppc: switch to {get,put}_compat_sigset() parisc: switch to {get,put}_compat_sigset() get_compat_sigset() get rid of {get,put}_compat_itimerspec() io_getevents: Use timespec64 to represent timeouts ...
2017-11-16Merge tag 'ipmi-for-4.15' of git://github.com/cminyard/linux-ipmiLinus Torvalds19-2201/+2987
Pull IPMI updates from Corey Minyard: "This is a fairly large rework of the IPMI code, along with a bunch of smaller fixes. The major changes have been in the next tree for a couple of months, so they should be good to do in. - Some users had IPMI systems where the GUID of the IPMI controller could change. So rescanning of the GUID was added. The naming of some sysfs things was dependent on the GUID, however, so this resulted in the sysfs interface code in IPMI changing to remove that dependency and name the IPMI BMCs like other sysfs devices. - The ipmi_si_intf.c code was fairly bloated with all the different discovery methods (PCI, ACPI, SMBIOS, OF, platform, module parameters, hot add). The structure of how the interfaces were added was redone to make them more modular, then the individual methods were pulled out into their own files" * tag 'ipmi-for-4.15' of git://github.com/cminyard/linux-ipmi: (48 commits) ipmi_si: Delete an error message for a failed memory allocation in try_smi_init() ipmi_si: fix memory leak on new_smi ipmi: remove redundant initialization of bmc ipmi: pr_err() strings should end with newlines ipmi: Clean up some print operations ipmi: Make the DMI probe into a generic platform probe ipmi: Make the IPMI proc interface configurable ipmi_ssif: Add device attrs for the things in proc ipmi_si: Add device attrs for the things in proc ipmi_si: remove ipmi_smi_alloc() function ipmi_si: Move port and mem I/O handling to their own files ipmi_si: Get rid of unused spacing and port fields ipmi_si: Move PARISC handling to another file ipmi_si: Move PCI setup to another file ipmi_si: Move platform device handling to another file ipmi_si: Move hardcode handling to a separate file. ipmi_si: Move the hotmod handling to another file. ipmi_si: Change ipmi_si_add_smi() to take just I/O info ipmi_si: Move io setup into io structure ipmi_si: Move irq setup handling into the io struct ...
2017-11-16Merge tag 'modules-for-v4.15' of ↵Linus Torvalds2-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull module updates from Jessica Yu: "Summary of modules changes for the 4.15 merge window: - treewide module_param_call() cleanup, fix up set/get function prototype mismatches, from Kees Cook - minor code cleanups" * tag 'modules-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: module: Do not paper over type mismatches in module_param_call() treewide: Fix function prototypes for module_param_call() module: Prepare to convert all module_param_call() prototypes kernel/module: Delete an error message for a failed memory allocation in add_module_usage()
2017-11-10ipmi: get rid of pointless access_ok()Al Viro1-6/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-02Merge branch 'modules-next' of ↵Corey Minyard2-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux into for-next The IPMI SI driver was split into different pieces, merge the module tree to accountfor that. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman3-0/+3
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-31treewide: Fix function prototypes for module_param_call()Kees Cook2-3/+3
Several function prototypes for the set/get functions defined by module_param_call() have a slightly wrong argument types. This fixes those in an effort to clean up the calls when running under type-enforced compiler instrumentation for CFI. This is the result of running the following semantic patch: @match_module_param_call_function@ declarer name module_param_call; identifier _name, _set_func, _get_func; expression _arg, _mode; @@ module_param_call(_name, _set_func, _get_func, _arg, _mode); @fix_set_prototype depends on match_module_param_call_function@ identifier match_module_param_call_function._set_func; identifier _val, _param; type _val_type, _param_type; @@ int _set_func( -_val_type _val +const char * _val , -_param_type _param +const struct kernel_param * _param ) { ... } @fix_get_prototype depends on match_module_param_call_function@ identifier match_module_param_call_function._get_func; identifier _val, _param; type _val_type, _param_type; @@ int _get_func( -_val_type _val +char * _val , -_param_type _param +const struct kernel_param * _param ) { ... } Two additional by-hand changes are included for places where the above Coccinelle script didn't notice them: drivers/platform/x86/thinkpad_acpi.c fs/lockd/svc.c Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jessica Yu <jeyu@kernel.org>
2017-10-17ipmi_si: Delete an error message for a failed memory allocation in ↵Markus Elfring1-1/+0
try_smi_init() Omit an extra message for a memory allocation failure in this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-10-17ipmi_si: fix memory leak on new_smiColin Ian King1-0/+1
The error exit path omits kfree'ing the allocated new_smi, causing a memory leak. Fix this by kfree'ing new_smi. Detected by CoverityScan, CID#14582571 ("Resource Leak") Fixes: 7e030d6dff71 ("ipmi: Prefer ACPI system interfaces over SMBIOS ones") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi: remove redundant initialization of bmcColin Ian King1-1/+1
The pointer bmc is being initialized and this initialized value is never being read, so this is assignment redundant and can be removed. Cleans up clang warning: warning: Value stored to 'bmc' during its initialization is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi: pr_err() strings should end with newlinesArvind Yadav1-3/+3
pr_err() messages should terminated with a new-line to avoid other messages being concatenated onto the end. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi: Clean up some print operationsCorey Minyard1-56/+45
Get rid of all printfs, using dev_xxx() if a device is available, pr_xxx() otherwise, and format long strings properly. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi: Make the DMI probe into a generic platform probeCorey Minyard7-94/+103
Rework the DMI probe function to be a generic platform probe, and then rework the DMI code (and a few other things) to use the more generic information. This is so other things can declare platform IPMI devices. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi: Make the IPMI proc interface configurableCorey Minyard4-21/+40
So we can remove it later. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_ssif: Add device attrs for the things in procCorey Minyard1-2/+74
Create a device attribute for everything we show in proc, getting ready for removing the proc stuff. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Add device attrs for the things in procCorey Minyard1-1/+103
Create a device attribute for everything we show in proc, getting ready for removing the proc stuff. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: remove ipmi_smi_alloc() functionCorey Minyard1-10/+2
It's only used in one place now, so it's overkill. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Move port and mem I/O handling to their own filesCorey Minyard5-255/+263
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Get rid of unused spacing and port fieldsCorey Minyard1-10/+0
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Move PARISC handling to another fileCorey Minyard4-57/+71
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Move PCI setup to another fileCorey Minyard4-161/+179
Signed-off-by: Corey Minyard <cminyard@mvista.com> Stephen Rothwell <sfr@canb.auug.org.au> fixed an issue with the include files
2017-09-28ipmi_si: Move platform device handling to another fileCorey Minyard4-589/+613
Signed-off-by: Corey Minyard <cminyard@mvista.com> Stephen Rothwell <sfr@canb.auug.org.au> fixed an issue with the include files
2017-09-28ipmi_si: Move hardcode handling to a separate file.Corey Minyard4-147/+154
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Move the hotmod handling to another file.Corey Minyard4-244/+264
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Change ipmi_si_add_smi() to take just I/O infoCorey Minyard3-309/+229
Instead of allocating the smi_info structure, filling in the I/O info, and passing it to ipmi_si_add_smi(), just pass the I/O info in the io structure and let ipmi_si_add_smi() allocate the smi_info structure. This required redoing the way the remove functions for some device interfaces worked, a new function named ipmi_si_remove_by_dev() allows the device to be passed in and detected instead of using driver data, which couldn't be filled out easily othersize. After this the platform handling should be decoupled from the smi_info structure and that handling can be pulled out to its own files. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Move io setup into io structureCorey Minyard2-92/+85
Where it belongs, and getting ready for pulling the platform handling into its own file. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Move irq setup handling into the io structCorey Minyard3-81/+82
So the platform code can do it without having to access the smi info, getting ready for pulling the platform handling section to their own files. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Move some platform data into the io structureCorey Minyard2-216/+213
That's where it belongs, and we are getting ready for moving the platform handling out of the main ipmi_si_intf.c file. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-09-28ipmi_si: Rename function to add smi, make it globalCorey Minyard2-16/+28
Getting ready for moving the platform-specific stuff into their own files. Signed-off-by: Corey Minyard <cminyard@mvista.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-25 11:18:14 +0300