kernel/linux.git/drivers/fpga, branch v5.1.2

Merge 5.0-rc6 into char-misc-next

2019-02-11T08:05:58+00:00

We need the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman

fpga: altera_freeze_bridge: remove restriction to socfpga

2019-01-31T15:22:51+00:00

The Altera Freeze Bridge should not be restricted to ARCH_SOCFPGA since it can be used on other platforms such as Stratix10. Signed-off-by: Alan Tull Reviewed-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman

fpga: mgr: altera-ps-spi: make array dummy static, shrinks object size

2019-01-31T15:22:51+00:00

Don't populate the const array dummy on the stack but instead make it static. Makes the object code smaller by 26 bytes: Before: text data bss dec hex filename 7371 2032 0 9403 24bb drivers/fpga/altera-ps-spi.o After: text data bss dec hex filename 7281 2096 0 9377 24a1 drivers/fpga/altera-ps-spi.o (gcc version 8.2.0 x86_64) Signed-off-by: Colin Ian King Acked-by: Alan Tull Acked-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman

fpga: stratix10-soc: fix wrong of_node_put() in init function

2019-01-31T15:19:48+00:00

After finding a "firmware" dt node stratix10 tries to match it's compatible string with it. To do so it's calling of_find_matching_node() which already takes care of decreasing the refcount on the "firmware" node. We are then incorrectly decreasing the refcount on that node again. This patch removes the unwarranted call to of_node_put(). Fixes: e7eef1d7633a ("fpga: add intel stratix10 soc fpga manager driver") Signed-off-by: Nicolas Saenz Julienne Acked-by: Alan Tull Acked-by: Moritz Fischer [atull: remove unnecessary braces] Signed-off-by: Greg Kroah-Hartman

Remove 'type' argument from access_ok() function

2019-01-04T02:57:57+00:00

Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument of the user address range verification function since we got rid of the old racy i386-only code to walk page tables by hand. It existed because the original 80386 would not honor the write protect bit when in kernel mode, so you had to do COW by hand before doing any user access. But we haven't supported that in a long time, and these days the 'type' argument is a purely historical artifact. A discussion about extending 'user_access_begin()' to do the range checking resulted this patch, because there is no way we're going to move the old VERIFY_xyz interface to that model. And it's best done at the end of the merge window when I've done most of my merges, so let's just get this done once and for all. This patch was mostly done with a sed-script, with manual fix-ups for the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form. There were a couple of notable cases: - csky still had the old "verify_area()" name as an alias. - the iter_iov code had magical hardcoded knowledge of the actual values of VERIFY_{READ,WRITE} (not that they mattered, since nothing really used it) - microblaze used the type argument for a debug printout but other than those oddities this should be a total no-op patch. I tried to fix up all architectures, did fairly extensive grepping for access_ok() uses, and the changes are trivial, but I may have missed something. Any missed conversion should be trivially fixable, though. Signed-off-by: Linus Torvalds

fpga: of-fpga-region: Use platform_set_drvdata

2018-11-26T19:47:10+00:00

Use platform_set_drvdata rather than dev_set_drvdata to match the platform_get_drvdata in the _remove() function of the platform driver. Signed-off-by: Moritz Fischer Acked-by: Alan Tull Signed-off-by: Greg Kroah-Hartman

fpga: dfl-fme-region: Use platform_get_drvdata()

2018-11-26T19:47:10+00:00

Use platform_get_drvdata() in remove() function of the platform driver rather than dev_get_drvdata() to match the platform_set_drvdata in the probe(). Signed-off-by: Moritz Fischer Acked-by: Alan Tull Signed-off-by: Greg Kroah-Hartman

fpga: add intel stratix10 soc fpga manager driver

2018-11-26T19:15:07+00:00

Add driver for reconfiguring Intel Stratix10 SoC FPGA devices. This driver communicates through the Intel service layer driver which does communication with privileged hardware (that does the FPGA programming) through a secure mailbox. Signed-off-by: Alan Tull Signed-off-by: Richard Gong Acked-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman

fpga: mgr: altera-ps-spi: enable usage on non-dt platforms

2018-11-26T19:12:05+00:00

Driver probing fails on non-dt platforms since of_match_device() always returns NULL here. Add spi ids with device names and matching driver data as an index of a map array with data for supported devices. Add this map array and a function for mapping spi ids to driver data. This allows driver binding to dynamically added PS-SPI devices (e.g. when added via spi_new_device() after hot-plugging). Signed-off-by: Anatolij Gustschin Acked-by: Alan Tull Signed-off-by: Greg Kroah-Hartman

fpga: altera-cvp: fix probing for multiple FPGAs on the bus

2018-11-26T19:12:05+00:00

Currently registering CvP managers works only for first probed CvP device, for all other devices it is refused due to duplicated chkcfg sysfs entry: fpga_manager fpga3: Altera CvP FPGA Manager @0000:0c:00.0 registered sysfs: cannot create duplicate filename '/bus/pci/drivers/altera-cvp/chkcfg' CPU: 0 PID: 3808 Comm: bash Tainted: G O 4.19.0-custom+ #5 Call Trace: dump_stack+0x46/0x5b sysfs_warn_dup+0x53/0x60 sysfs_add_file_mode_ns+0x16d/0x180 sysfs_create_file_ns+0x51/0x60 altera_cvp_probe+0x16f/0x2a0 [altera_cvp] local_pci_probe+0x3f/0xa0 ? pci_match_device+0xb1/0xf0 pci_device_probe+0x116/0x170 really_probe+0x21b/0x2c0 driver_probe_device+0x4b/0xe0 bind_store+0xcb/0x130 kernfs_fop_write+0xfd/0x180 __vfs_write+0x21/0x150 ? selinux_file_permission+0xdc/0x130 vfs_write+0xa8/0x1a0 ? find_vma+0xd/0x60 ksys_write+0x3d/0x90 do_syscall_64+0x44/0xf0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 ... altera-cvp 0000:0c:00.0: Can't create sysfs chkcfg file fpga_manager fpga3: fpga_mgr_unregister Altera CvP FPGA Manager @0000:0c:00.0 Move chkcfg creation to module init as suggested by Alan. Signed-off-by: Anatolij Gustschin Acked-by: Alan Tull Signed-off-by: Greg Kroah-Hartman