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2011-02-19genirq: Remove desc->status when GENERIC_HARDIRQS_NO_COMPAT=yThomas Gleixner1-0/+6
If everything uses the right accessors, then enabling GENERIC_HARDIRQS_NO_COMPAT should just work. If not it will tell you. Don't be lazy and use the trick which I use in the core code! git grep status_use_accessors will unearth it in a split second. Offenders are tracked down and not slapped with stinking trouts. This time we use frozen shark for a better educational value. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Reflect IRQ_MOVE_PCNTXT in irq_data stateThomas Gleixner1-0/+8
Required by x86. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move wakeup state to irq_dataThomas Gleixner1-0/+8
Some irq_chips need to know the state of wakeup mode for setting the trigger type etc. Reflect it in irq_data state. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Add IRQCHIP_SET_TYPE_MASKED flagThomas Gleixner1-0/+9
irq_chips, which require to mask the chip before changing the trigger type should set this flag. So the core takes care of it and the requirement for looking into desc->status in the chip goes away. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: Lars-Peter Clausen <lars@metafoo.de>
2011-02-19genirq: Add flags to irq_chipThomas Gleixner1-0/+3
Looking through irq_chip implementations I noticed that some of them have special requirements, like setting the type masked and therefor fiddle in irq_desc->status. Add a flag field, so the core code can handle it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Cleanup irq.hThomas Gleixner1-33/+62
Put the constants into an enum and document them. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Mirror irq trigger type bits in irq_data.stateThomas Gleixner1-1/+25
That's the data structure chip functions get provided. Also allow them to signal the core code that they updated the flags in irq_data.state by returning IRQ_SET_MASK_OK_NOCOPY. The default is unchanged. The type bits should be accessed via: val = irqd_get_trigger_type(irqdata); and irqd_set_trigger_type(irqdata, val); Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_AFFINITY_SET to coreThomas Gleixner1-1/+8
Keep status in sync until last abuser is gone. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Mirror IRQ_PER_CPU and IRQ_NO_BALANCING in irq_data.stateThomas Gleixner1-1/+15
That's the right data structure to look at for arch code. Accessor functions are provided. irqd_is_per_cpu(irqdata); irqd_can_balance(irqdata); Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Make CHECK_IRQ_PER_CPU an inline and deprecate itThomas Gleixner1-2/+6
Its' too ugly and needs to go. The only users are core code and parisc. Core code does not need it and parisc gets a new check once IRQ_PER_CPU is reflected in irq_data.state. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Remove CONFIG_IRQ_PER_CPUThomas Gleixner1-5/+0
The saving of this switch is minimal versus the ifdef mess it creates. Simple enable PER_CPU unconditionally and remove the config switch. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Add IRQ_MOVE_PENDING to irq_data.stateThomas Gleixner1-2/+18
chip implementations need to know about it. Keep status in sync until all users are fixed. Accessor function: irqd_is_setaffinity_pending(irqdata) Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Add state field to irq_dataThomas Gleixner2-0/+4
Some chip implementations need to access certain status flags. With sparse irqs that requires a lookup of the irq descriptor. Add a state field which contains such flags. Name it in a way which will make coders happy to access it with the proper accessor functions. And it's easy to grep for. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_SUSPENDED to coreThomas Gleixner1-2/+0
No users outside of core. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_MASKED to coreThomas Gleixner1-1/+1
Keep status in sync until all users are fixed. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_PENDING flag to coreThomas Gleixner1-1/+1
Keep status in sync until all users are fixed. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_DISABLED to coreThomas Gleixner1-2/+2
Keep status in sync until all abusers are fixed. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_REPLAY and IRQ_WAITING to coreThomas Gleixner1-4/+5
No users outside of core. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_ONESHOT to coreThomas Gleixner1-1/+0
No users outside of core. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Add IRQ_INPROGRESS to coreThomas Gleixner1-1/+5
We need to maintain the flag for now in both fields status and istate. Add a CONFIG_GENERIC_HARDIRQS_NO_COMPAT switch to allow testing w/o the status one. Wrap the access to status IRQ_INPROGRESS in a inline which can be turned of with CONFIG_GENERIC_HARDIRQS_NO_COMPAT along with the define. There is no reason that anything outside of core looks at this. That needs some modifications, but we'll get there. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_POLL_INPROGRESS to coreThomas Gleixner1-1/+0
No users outside of core. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Use modify_status for set_irq_nested_threadThomas Gleixner1-3/+13
No need for a separate function in the core code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_SPURIOUS_DISABLED to core stateThomas Gleixner1-1/+0
No users outside. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move IRQ_AUTODETECT to internal stateThomas Gleixner1-1/+0
No users outside of core Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Add internal state field to irq_descThomas Gleixner1-1/+2
That field will contain internal state information which is not going to be exposed to anything outside the core code - except via accessor functions. I'm tired of everyone fiddling in irq_desc.status. core_internal_state__do_not_mess_with_it is clear enough, annoying to type and easy to grep for. Offenders will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Implement generic irq_show_interrupts()Thomas Gleixner1-0/+1
All archs implement show_interrupts() in more or less the same way. That's tons of duplicated code with different bugs with no value. Implement a generic version and deprecate show_interrupts() Unfortunately we need some ifdeffery for !GENERIC_HARDIRQ archs. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Move irq thread flags to coreThomas Gleixner1-14/+0
Soleley used in core code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Mark polled irqs and defer the real handlerThomas Gleixner1-0/+1
With the chip.end() function gone we might run into a situation where a poll call runs and the real interrupt comes in, sees IRQ_INPROGRESS and disables the line. That might be a perfect working one, which will then be masked forever. So mark them polled while the poll runs. When the real handler sees IRQ_INPROGRESS it checks the poll flag and waits for the polling to complete. Add the necessary amount of sanity checks to it to avoid deadlocks. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Do not copy affinity before setThomas Gleixner1-0/+11
While rumaging through arch code I found that there are a few workarounds which deal with the fact that the initial affinity setting from request_irq() copies the mask into irq_data->affinity before the chip code is called. In the normal path we unconditionally copy the mask when the chip code returns 0. Copy after the code is called and add a return code IRQ_SET_MASK_OK_NOCOPY for the chip functions, which prevents the copy. That way we see the real mask when the chip function decided to truncate it further as some arches do. IRQ_SET_MASK_OK is 0, which is the current behaviour. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19genirq: Namespace cleanupThomas Gleixner3-21/+116
The irq namespace has become quite convoluted. My bad. Clean it up and deprecate the old functions. All new functions follow the scheme: irq number based: irq_set/get/xxx/_xxx(unsigned int irq, ...) irq_data based: irq_data_set/get/xxx/_xxx(struct irq_data *d, ....) irq_desc based: irq_desc_get_xxx(struct irq_desc *desc) Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19Merge branch 'irq/urgent' into irq/coreThomas Gleixner13-28/+69
Reason: Further patches are conflicting with mainline fixes Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-02-19Merge branch 'rtc-for-linus' of ↵Linus Torvalds1-0/+15
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: RTC: Re-enable UIE timer/polling emulation RTC: Revert UIE emulation removal RTC: Release mutex in error path of rtc_alarm_irq_enable
2011-02-18Merge branch 'fixes-2.6.38' of ↵Linus Torvalds3-6/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq * 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: make sure MAYDAY_INITIAL_TIMEOUT is at least 2 jiffies long workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable' workqueue: wake up a worker when a rescuer is leaving a gcwq
2011-02-18Expand CONFIG_DEBUG_LIST to several other list operationsLinus Torvalds1-3/+9
When list debugging is enabled, we aim to readably show list corruption errors, and the basic list_add/list_del operations end up having extra debugging code in them to do some basic validation of the list entries. However, "list_del_init()" and "list_move[_tail]()" ended up avoiding the debug code due to how they were written. This fixes that. So the _next_ time we have list_move() problems with stale list entries, we'll hopefully have an easier time finding them.. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-18RTC: Re-enable UIE timer/polling emulationJohn Stultz1-0/+1
This patch re-enables UIE timer/polling emulation for rtc devices that do not support alarm irqs. CC: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> CC: Thomas Gleixner <tglx@linutronix.de> Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Tested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-02-18RTC: Revert UIE emulation removalJohn Stultz1-0/+14
Uwe pointed out that my alarm based UIE emulation is not sufficient to replace the older timer/polling based UIE emulation on devices where there is no alarm irq. This causes rtc devices without alarms to return -EINVAL to UIE ioctls. The fix is to re-instate the old timer/polling method for devices without alarm irqs. This patch reverts the following commits: 042620a018afcfba1d678062b62e46 - Remove UIE emulation 1daeddd5962acad1bea55e524fc0fa - Cleanup removed UIE emulation declaration b5cc8ca1c9c3a37eaddf709b2fd3e1 - Remove Kconfig symbol for UIE emulation The emulation mode will still need to be wired-in with a following patch before it will work. CC: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> CC: Thomas Gleixner <tglx@linutronix.de> Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-02-16workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable'Tejun Heo3-6/+6
There are two spellings in use for 'freeze' + 'able' - 'freezable' and 'freezeable'. The former is the more prominent one. The latter is mostly used by workqueue and in a few other odd places. Unify the spelling to 'freezable'. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Alex Dubov <oakad@yahoo.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Steven Whitehouse <swhiteho@redhat.com>
2011-02-16thp: prevent hugepages during args/env copying into the user stackAndrea Arcangeli1-1/+2
Transparent hugepages can only be created if rmap is fully functional. So we must prevent hugepages to be created while is_vma_temporary_stack() is true. This also optmizes away some harmless but unnecessary setting of khugepaged_scan.address and it switches some BUG_ON to VM_BUG_ON. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-15Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds1-2/+11
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Fix text_poke_smp_batch() deadlock perf tools: Fix thread_map event synthesizing in top and record watchdog, nmi: Lower the severity of error messages ARM: oprofile: Fix backtraces in timer mode oprofile: Fix usage of CONFIG_HW_PERF_EVENTS for oprofile_perf_init and friends
2011-02-15Merge branch 'for-linus' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: matrix_keypad - increase the limit of rows and columns Input: wacom - fix error path in wacom_probe() Input: ads7846 - check proper condition when freeing gpio Revert "Input: do not pass injected events back to the originating handler" Input: sysrq - rework re-inject logic Input: serio - clear pending rescans after sysfs driver rebind Input: rotary_encoder - use proper irqflags Input: wacom_w8001 - report resolution to userland
2011-02-15Merge branch 'urgent' of ↵Ingo Molnar1-2/+11
git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into perf/urgent
2011-02-14klist: Fix object alignment on 64-bit.David Miller1-1/+1
Commit c0e69a5bbc6f ("klist.c: bit 0 in pointer can't be used as flag") intended to make sure that all klist objects were at least pointer size aligned, but used the constant "4" which only works on 32-bit. Use "sizeof(void *)" which is correct in all cases. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: stable <stable@kernel.org> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-11Input: matrix_keypad - increase the limit of rows and columnsTrilok Soni1-2/+2
Some keyboard controllers support more than 16 columns and rows. Increase the limit to 32. Signed-off-by: Trilok Soni <tsoni@codeaurora.org> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-02-11security: add cred argument to security_capable()Chris Wright1-3/+3
Expand security_capable() to include cred, so that it can be usable in a wider range of call sites. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: James Morris <jmorris@namei.org>
2011-02-10Merge branch 'usb-linus' of ↵Linus Torvalds1-4/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 * 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (21 commits) USB: cdc-acm: Adding second ACM channel support for Nokia N8 USB, Mass Storage, composite, gadget: Fix build failure and memset of a struct USB: Fix trout build failure with ci13xxx_msm gadget USB: EHCI: fix scheduling while atomic during suspend USB: usb-storage: unusual_devs entry for Coby MP3 player USB: ftdi_sio: Add VID=0x0647, PID=0x0100 for Acton Research spectrograph USB: fix race between root-hub resume and wakeup requests USB: prevent buggy hubs from crashing the USB stack usb: r8a66597-udc: Fixed bufnum of Bulk USB: ftdi_sio: add ST Micro Connect Lite uart support USB: Storage: Add unusual_devs entry for VTech Kidizoom USB SL811HS HCD: Fix memory leak in sl811h_urb_enqueue() USB: ti_usb: fix module removal USB: io_edgeport: fix the reported firmware major and minor usb: ehci-omap: Show fatal probing time errors to end user usb: musb: introduce api for dma code to check compatibility with usb request usb: musb: maintain three states for buffer mappings instead of two usb: musb: disable double buffering when it's broken usb: musb: hsdma: change back to use musb_read/writew usb: musb: core: fix IRQ check ...
2011-02-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-5/+18
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (34 commits) virtio_net: Add schedule check to napi_enable call x25: Do not reference freed memory. pch_can: fix tseg1/tseg2 setting issue isdn: hysdn: Kill (partially buggy) CVS regision log reporting. can: softing_cs needs slab.h pch_gbe: Fix the issue which a driver locks when rx offload is set by ethtool netfilter: nf_conntrack: set conntrack templates again if we return NF_REPEAT pch_can: fix module reload issue with MSI pch_can: fix rmmod issue pch_can: fix 800k comms issue net: Fix lockdep regression caused by initializing netdev queues too early. net/caif: Fix dangling list pointer in freed object on error. USB CDC NCM errata updates for cdc_ncm host driver CDC NCM errata updates for cdc.h ixgbe: update version string ixgbe: cleanup variable initialization ixgbe: limit VF access to network traffic ixgbe: fix for 82599 erratum on Header Splitting ixgbe: fix variable set but not used warnings by gcc 4.6 e1000: add support for Marvell Alaska M88E1118R PHY ...
2011-02-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds1-1/+2
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: virtio: console: Update Copyright virtio: console: Wake up outvq on host notifications
2011-02-09CDC NCM errata updates for cdc.hAlexey Orishko1-5/+18
Changes are based on the following documents: - CDC NCM errata: http://www.usb.org/developers/devclass_docs/NCM10_012011.zip - CDC and WMC errata link: http://www.usb.org/developers/devclass_docs/CDC1.2_WMC1.1_012011.zip Signed-off-by: Alexey Orishko <alexey.orishko@stericsson.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-09virtio: console: Update CopyrightAmit Shah1-1/+2
Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-02-08Merge branch 'irq/for-xen' into irq/coreThomas Gleixner4-31/+39
irq/for-xen contains new functionality to avoid Xen private irq hackery. That branch has a single irq commit and is pulled by Xen to base their new features on. Merge it into irq/core as other patches modify the same code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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