linux-toradex.git/drivers, branch v4.9.30 Linux kernel for Apalis and Colibri modules drm/i915/gvt: Disable access to stolen memory as a guest 2017-05-25T13:44:49+00:00 Chris Wilson chris@chris-wilson.co.uk 2016-11-09T10:39:05+00:00 5a597b225d48023bb10e38ea64adb277fc559247 commit 04a68a35ce6d7b54749989f943993020f48fed62 upstream. Explicitly disable stolen memory when running as a guest in a virtual machine, since the memory is not mediated between clients and reserved entirely for the host. The actual size should be reported as zero, but like every other quirk we want to tell the user what is happening. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99028 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161109103905.17860-1-chris@chris-wilson.co.uk Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 04a68a35ce6d7b54749989f943993020f48fed62 upstream.

Explicitly disable stolen memory when running as a guest in a virtual
machine, since the memory is not mediated between clients and reserved
entirely for the host. The actual size should be reported as zero, but
like every other quirk we want to tell the user what is happening.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99028
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161109103905.17860-1-chris@chris-wilson.co.uk
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers: char: mem: Check for address space wraparound with mmap() 2017-05-25T13:44:49+00:00 Julius Werner jwerner@chromium.org 2017-05-12T21:42:58+00:00 1489183c2005676b2231fec00aced800093008ed commit b299cde245b0b76c977f4291162cf668e087b408 upstream. /dev/mem currently allows mmap() mappings that wrap around the end of the physical address space, which should probably be illegal. It circumvents the existing STRICT_DEVMEM permission check because the loop immediately terminates (as the start address is already higher than the end address). On the x86_64 architecture it will then cause a panic (from the BUG(start >= end) in arch/x86/mm/pat.c:reserve_memtype()). This patch adds an explicit check to make sure offset + size will not wrap around in the physical address type. Signed-off-by: Julius Werner <jwerner@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit b299cde245b0b76c977f4291162cf668e087b408 upstream.

/dev/mem currently allows mmap() mappings that wrap around the end of
the physical address space, which should probably be illegal. It
circumvents the existing STRICT_DEVMEM permission check because the loop
immediately terminates (as the start address is already higher than the
end address). On the x86_64 architecture it will then cause a panic
(from the BUG(start >= end) in arch/x86/mm/pat.c:reserve_memtype()).

This patch adds an explicit check to make sure offset + size will not
wrap around in the physical address type.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm/edid: Add 10 bpc quirk for LGD 764 panel in HP zBook 17 G2 2017-05-25T13:44:48+00:00 Mario Kleiner mario.kleiner.de@gmail.com 2017-04-21T15:05:08+00:00 5438f89529065a936f31803e263adfd843f09bf8 commit e345da82bd6bdfa8492f80b3ce4370acfd868d95 upstream. The builtin eDP panel in the HP zBook 17 G2 supports 10 bpc, as advertised by the Laptops product specs and verified via injecting a fixed edid + photometer measurements, but edid reports unknown depth, so drivers fall back to 6 bpc. Add a quirk to get the full 10 bpc. Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1492787108-23959-1-git-send-email-mario.kleiner.de@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit e345da82bd6bdfa8492f80b3ce4370acfd868d95 upstream.

The builtin eDP panel in the HP zBook 17 G2 supports 10 bpc,
as advertised by the Laptops product specs and verified via
injecting a fixed edid + photometer measurements, but edid
reports unknown depth, so drivers fall back to 6 bpc.

Add a quirk to get the full 10 bpc.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1492787108-23959-1-git-send-email-mario.kleiner.de@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mtd: nand: add ooblayout for old hamming layout 2017-05-25T13:44:48+00:00 Alexander Couzens lynxis@fe80.eu 2017-05-02T10:19:00+00:00 5956b2815f90e0749d98ea0baedc49b1792f598b commit 6a623e07694437ad09f382a13f76cffc32239a7f upstream. The old 1-bit hamming layout requires ECC data to be placed at a fixed offset, and not necessarily at the end of the OOB area. Add this old layout back in order to fix legacy setups. Fixes: 41b207a70d3a ("mtd: nand: implement the default mtd_ooblayout_ops") Signed-off-by: Alexander Couzens <lynxis@fe80.eu> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6a623e07694437ad09f382a13f76cffc32239a7f upstream.

The old 1-bit hamming layout requires ECC data to be placed at a
fixed offset, and not necessarily at the end of the OOB area.
Add this old layout back in order to fix legacy setups.

Fixes: 41b207a70d3a ("mtd: nand: implement the default mtd_ooblayout_ops")
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mtd: nand: omap2: Fix partition creation via cmdline mtdparts 2017-05-25T13:44:48+00:00 Roger Quadros rogerq@ti.com 2017-03-30T07:37:50+00:00 6639b27f5a4c5425a46b2f1039d390dd1ad7b94f commit 2d283ede59869159f4bb84ae689258c5caffce54 upstream. commit c9711ec5250b ("mtd: nand: omap: Clean up device tree support") caused the parent device name to be changed from "omap2-nand.0" to "<base address>.nand" (e.g. 30000000.nand on omap3 platforms). This caused mtd->name to be changed as well. This breaks partition creation via mtdparts passed by u-boot as it uses "omap2-nand.0" for the mtd-id. Fix this by explicitly setting the mtd->name to "omap2-nand.<CS number>" if it isn't already set by nand_set_flash_node(). CS number is the NAND controller instance ID. Fixes: c9711ec5250b ("mtd: nand: omap: Clean up device tree support") Reported-by: Leto Enrico <enrico.leto@siemens.com> Reported-by: Adam Ford <aford173@gmail.com> Suggested-by: Boris Brezillon <boris.brezillon@free-electrons.com> Tested-by: Adam Ford <aford173@gmail.com> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 2d283ede59869159f4bb84ae689258c5caffce54 upstream.

commit c9711ec5250b ("mtd: nand: omap: Clean up device tree support")
caused the parent device name to be changed from "omap2-nand.0"
to "<base address>.nand"  (e.g. 30000000.nand on omap3 platforms).
This caused mtd->name to be changed as well. This breaks partition
creation via mtdparts passed by u-boot as it uses "omap2-nand.0"
for the mtd-id.

Fix this by explicitly setting the mtd->name to "omap2-nand.<CS number>"
if it isn't already set by nand_set_flash_node(). CS number is the
NAND controller instance ID.

Fixes: c9711ec5250b ("mtd: nand: omap: Clean up device tree support")
Reported-by: Leto Enrico <enrico.leto@siemens.com>
Reported-by: Adam Ford <aford173@gmail.com>
Suggested-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mtd: nand: orion: fix clk handling 2017-05-25T13:44:48+00:00 Simon Baatz gmbnomis@gmail.com 2017-03-27T18:02:07+00:00 e437af936a49680ac509b9d51f1b51b11c8da605 commit 675b11d94ce9baa5eb365a51b35d2793f77c8ab8 upstream. The clk handling in orion_nand.c had two problems: - In the probe function, clk_put() was called for an enabled clock, which violates the API (see documentation for clk_put() in include/linux/clk.h) - In the error path of the probe function, clk_put() could be called twice for the same clock. In order to clean this up, use the managed function devm_clk_get() and store the pointer to the clk in the driver data. Fixes: baffab28b13120694fa3ebab08d3e99667a851d2 ('ARM: Orion: fix driver probe error handling with respect to clk') Signed-off-by: Simon Baatz <gmbnomis@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 675b11d94ce9baa5eb365a51b35d2793f77c8ab8 upstream.

The clk handling in orion_nand.c had two problems:

- In the probe function, clk_put() was called for an enabled clock,
  which violates the API (see documentation for clk_put() in
  include/linux/clk.h)

- In the error path of the probe function, clk_put() could be called
  twice for the same clock.

In order to clean this up, use the managed function devm_clk_get() and
store the pointer to the clk in the driver data.

Fixes: baffab28b13120694fa3ebab08d3e99667a851d2 ('ARM: Orion: fix driver probe error handling with respect to clk')
Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
PCI: Freeze PME scan before suspending devices 2017-05-25T13:44:48+00:00 Lukas Wunner lukas@wunner.de 2017-04-18T18:44:30+00:00 db663641619558c9a1b8b77f5bfd351e131b57a7 commit ea00353f36b64375518662a8ad15e39218a1f324 upstream. Laurent Pinchart reported that the Renesas R-Car H2 Lager board (r8a7790) crashes during suspend tests. Geert Uytterhoeven managed to reproduce the issue on an M2-W Koelsch board (r8a7791): It occurs when the PME scan runs, once per second. During PME scan, the PCI host bridge (rcar-pci) registers are accessed while its module clock has already been disabled, leading to the crash. One reproducer is to configure s2ram to use "s2idle" instead of "deep" suspend: # echo 0 > /sys/module/printk/parameters/console_suspend # echo s2idle > /sys/power/mem_sleep # echo mem > /sys/power/state Another reproducer is to write either "platform" or "processors" to /sys/power/pm_test. It does not (or is less likely) to happen during full system suspend ("core" or "none") because system suspend also disables timers, and thus the workqueue handling PME scans no longer runs. Geert believes the issue may still happen in the small window between disabling module clocks and disabling timers: # echo 0 > /sys/module/printk/parameters/console_suspend # echo platform > /sys/power/pm_test # Or "processors" # echo mem > /sys/power/state (Make sure CONFIG_PCI_RCAR_GEN2 and CONFIG_USB_OHCI_HCD_PCI are enabled.) Rafael Wysocki agrees that PME scans should be suspended before the host bridge registers become inaccessible. To that end, queue the task on a workqueue that gets frozen before devices suspend. Rafael notes however that as a result, some wakeup events may be missed if they are delivered via PME from a device without working IRQ (which hence must be polled) and occur after the workqueue has been frozen. If that turns out to be an issue in practice, it may be possible to solve it by calling pci_pme_list_scan() once directly from one of the host bridge's pm_ops callbacks. Stacktrace for posterity: PM: Syncing filesystems ... [ 38.566237] done. PM: Preparing system for sleep (mem) Freezing user space processes ... [ 38.579813] (elapsed 0.001 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. PM: Suspending system (mem) PM: suspend of devices complete after 152.456 msecs PM: late suspend of devices complete after 2.809 msecs PM: noirq suspend of devices complete after 29.863 msecs suspend debug: Waiting for 5 second(s). Unhandled fault: asynchronous external abort (0x1211) at 0x00000000 pgd = c0003000 [00000000] *pgd=80000040004003, *pmd=00000000 Internal error: : 1211 [#1] SMP ARM Modules linked in: CPU: 1 PID: 20 Comm: kworker/1:1 Not tainted 4.9.0-rc1-koelsch-00011-g68db9bc814362e7f #3383 Hardware name: Generic R8A7791 (Flattened Device Tree) Workqueue: events pci_pme_list_scan task: eb56e140 task.stack: eb58e000 PC is at pci_generic_config_read+0x64/0x6c LR is at rcar_pci_cfg_base+0x64/0x84 pc : [<c041d7b4>] lr : [<c04309a0>] psr: 600d0093 sp : eb58fe98 ip : c041d750 fp : 00000008 r10: c0e2283c r9 : 00000000 r8 : 600d0013 r7 : 00000008 r6 : eb58fed6 r5 : 00000002 r4 : eb58feb4 r3 : 00000000 r2 : 00000044 r1 : 00000008 r0 : 00000000 Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 6a9f6c80 DAC: 55555555 Process kworker/1:1 (pid: 20, stack limit = 0xeb58e210) Stack: (0xeb58fe98 to 0xeb590000) fe80: 00000002 00000044 fea0: eb6f5800 c041d9b0 eb58feb4 00000008 00000044 00000000 eb78a000 eb78a000 fec0: 00000044 00000000 eb9aff00 c0424bf0 eb78a000 00000000 eb78a000 c0e22830 fee0: ea8a6fc0 c0424c5c eaae79c0 c0424ce0 eb55f380 c0e22838 eb9a9800 c0235fbc ff00: eb55f380 c0e22838 eb55f380 eb9a9800 eb9a9800 eb58e000 eb9a9824 c0e02100 ff20: eb55f398 c02366c4 eb56e140 eb5631c0 00000000 eb55f380 c023641c 00000000 ff40: 00000000 00000000 00000000 c023a928 cd105598 00000000 40506a34 eb55f380 ff60: 00000000 00000000 dead4ead ffffffff ffffffff eb58ff74 eb58ff74 00000000 ff80: 00000000 dead4ead ffffffff ffffffff eb58ff90 eb58ff90 eb58ffac eb5631c0 ffa0: c023a844 00000000 00000000 c0206d68 00000000 00000000 00000000 00000000 ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 3a81336c 10ccd1dd [<c041d7b4>] (pci_generic_config_read) from [<c041d9b0>] (pci_bus_read_config_word+0x58/0x80) [<c041d9b0>] (pci_bus_read_config_word) from [<c0424bf0>] (pci_check_pme_status+0x34/0x78) [<c0424bf0>] (pci_check_pme_status) from [<c0424c5c>] (pci_pme_wakeup+0x28/0x54) [<c0424c5c>] (pci_pme_wakeup) from [<c0424ce0>] (pci_pme_list_scan+0x58/0xb4) [<c0424ce0>] (pci_pme_list_scan) from [<c0235fbc>] (process_one_work+0x1bc/0x308) [<c0235fbc>] (process_one_work) from [<c02366c4>] (worker_thread+0x2a8/0x3e0) [<c02366c4>] (worker_thread) from [<c023a928>] (kthread+0xe4/0xfc) [<c023a928>] (kthread) from [<c0206d68>] (ret_from_fork+0x14/0x2c) Code: ea000000 e5903000 f57ff04f e3a00000 (e5843000) ---[ end trace 667d43ba3aa9e589 ]--- Fixes: df17e62e5bff ("PCI: Add support for polling PME state on suspended legacy PCI devices") Reported-and-tested-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reported-and-tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Cc: Simon Horman <horms+renesas@verge.net.au> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit ea00353f36b64375518662a8ad15e39218a1f324 upstream.

Laurent Pinchart reported that the Renesas R-Car H2 Lager board (r8a7790)
crashes during suspend tests.  Geert Uytterhoeven managed to reproduce the
issue on an M2-W Koelsch board (r8a7791):

  It occurs when the PME scan runs, once per second.  During PME scan, the
  PCI host bridge (rcar-pci) registers are accessed while its module clock
  has already been disabled, leading to the crash.

One reproducer is to configure s2ram to use "s2idle" instead of "deep"
suspend:

  # echo 0 > /sys/module/printk/parameters/console_suspend
  # echo s2idle > /sys/power/mem_sleep
  # echo mem > /sys/power/state

Another reproducer is to write either "platform" or "processors" to
/sys/power/pm_test.  It does not (or is less likely) to happen during full
system suspend ("core" or "none") because system suspend also disables
timers, and thus the workqueue handling PME scans no longer runs.  Geert
believes the issue may still happen in the small window between disabling
module clocks and disabling timers:

  # echo 0 > /sys/module/printk/parameters/console_suspend
  # echo platform > /sys/power/pm_test    # Or "processors"
  # echo mem > /sys/power/state

(Make sure CONFIG_PCI_RCAR_GEN2 and CONFIG_USB_OHCI_HCD_PCI are enabled.)

Rafael Wysocki agrees that PME scans should be suspended before the host
bridge registers become inaccessible.  To that end, queue the task on a
workqueue that gets frozen before devices suspend.

Rafael notes however that as a result, some wakeup events may be missed if
they are delivered via PME from a device without working IRQ (which hence
must be polled) and occur after the workqueue has been frozen.  If that
turns out to be an issue in practice, it may be possible to solve it by
calling pci_pme_list_scan() once directly from one of the host bridge's
pm_ops callbacks.

Stacktrace for posterity:

  PM: Syncing filesystems ... [   38.566237] done.
  PM: Preparing system for sleep (mem)
  Freezing user space processes ... [   38.579813] (elapsed 0.001 seconds) done.
  Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
  PM: Suspending system (mem)
  PM: suspend of devices complete after 152.456 msecs
  PM: late suspend of devices complete after 2.809 msecs
  PM: noirq suspend of devices complete after 29.863 msecs
  suspend debug: Waiting for 5 second(s).
  Unhandled fault: asynchronous external abort (0x1211) at 0x00000000
  pgd = c0003000
  [00000000] *pgd=80000040004003, *pmd=00000000
  Internal error: : 1211 [#1] SMP ARM
  Modules linked in:
  CPU: 1 PID: 20 Comm: kworker/1:1 Not tainted
  4.9.0-rc1-koelsch-00011-g68db9bc814362e7f #3383
  Hardware name: Generic R8A7791 (Flattened Device Tree)
  Workqueue: events pci_pme_list_scan
  task: eb56e140 task.stack: eb58e000
  PC is at pci_generic_config_read+0x64/0x6c
  LR is at rcar_pci_cfg_base+0x64/0x84
  pc : [<c041d7b4>]    lr : [<c04309a0>]    psr: 600d0093
  sp : eb58fe98  ip : c041d750  fp : 00000008
  r10: c0e2283c  r9 : 00000000  r8 : 600d0013
  r7 : 00000008  r6 : eb58fed6  r5 : 00000002  r4 : eb58feb4
  r3 : 00000000  r2 : 00000044  r1 : 00000008  r0 : 00000000
  Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
  Control: 30c5387d  Table: 6a9f6c80  DAC: 55555555
  Process kworker/1:1 (pid: 20, stack limit = 0xeb58e210)
  Stack: (0xeb58fe98 to 0xeb590000)
  fe80:                                                       00000002 00000044
  fea0: eb6f5800 c041d9b0 eb58feb4 00000008 00000044 00000000 eb78a000 eb78a000
  fec0: 00000044 00000000 eb9aff00 c0424bf0 eb78a000 00000000 eb78a000 c0e22830
  fee0: ea8a6fc0 c0424c5c eaae79c0 c0424ce0 eb55f380 c0e22838 eb9a9800 c0235fbc
  ff00: eb55f380 c0e22838 eb55f380 eb9a9800 eb9a9800 eb58e000 eb9a9824 c0e02100
  ff20: eb55f398 c02366c4 eb56e140 eb5631c0 00000000 eb55f380 c023641c 00000000
  ff40: 00000000 00000000 00000000 c023a928 cd105598 00000000 40506a34 eb55f380
  ff60: 00000000 00000000 dead4ead ffffffff ffffffff eb58ff74 eb58ff74 00000000
  ff80: 00000000 dead4ead ffffffff ffffffff eb58ff90 eb58ff90 eb58ffac eb5631c0
  ffa0: c023a844 00000000 00000000 c0206d68 00000000 00000000 00000000 00000000
  ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
  ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 3a81336c 10ccd1dd
  [<c041d7b4>] (pci_generic_config_read) from [<c041d9b0>]
  (pci_bus_read_config_word+0x58/0x80)
  [<c041d9b0>] (pci_bus_read_config_word) from [<c0424bf0>]
  (pci_check_pme_status+0x34/0x78)
  [<c0424bf0>] (pci_check_pme_status) from [<c0424c5c>] (pci_pme_wakeup+0x28/0x54)
  [<c0424c5c>] (pci_pme_wakeup) from [<c0424ce0>] (pci_pme_list_scan+0x58/0xb4)
  [<c0424ce0>] (pci_pme_list_scan) from [<c0235fbc>]
  (process_one_work+0x1bc/0x308)
  [<c0235fbc>] (process_one_work) from [<c02366c4>] (worker_thread+0x2a8/0x3e0)
  [<c02366c4>] (worker_thread) from [<c023a928>] (kthread+0xe4/0xfc)
  [<c023a928>] (kthread) from [<c0206d68>] (ret_from_fork+0x14/0x2c)
  Code: ea000000 e5903000 f57ff04f e3a00000 (e5843000)
  ---[ end trace 667d43ba3aa9e589 ]---

Fixes: df17e62e5bff ("PCI: Add support for polling PME state on suspended legacy PCI devices")
Reported-and-tested-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reported-and-tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Cc: Simon Horman <horms+renesas@verge.net.au>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
PCI: Only allow WC mmap on prefetchable resources 2017-05-25T13:44:47+00:00 David Woodhouse dwmw@amazon.co.uk 2017-04-12T12:25:52+00:00 9ad81ecb28d611a07b59d8e899e0bd79a423aee2 commit cef4d02305a06be581bb7f4353446717a1b319ec upstream. The /proc/bus/pci mmap interface allows the user to specify whether they want WC or not. Don't let them do so on non-prefetchable BARs. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit cef4d02305a06be581bb7f4353446717a1b319ec upstream.

The /proc/bus/pci mmap interface allows the user to specify whether they
want WC or not.  Don't let them do so on non-prefetchable BARs.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
PCI: Fix another sanity check bug in /proc/pci mmap 2017-05-25T13:44:47+00:00 David Woodhouse dwmw@amazon.co.uk 2017-04-12T12:25:51+00:00 6bec009a2f690c69239ab8c002aa1f5eca8c480e commit 17caf56731311c9596e7d38a70c88fcb6afa6a1b upstream. Don't match MMIO maps with I/O BARs and vice versa. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 17caf56731311c9596e7d38a70c88fcb6afa6a1b upstream.

Don't match MMIO maps with I/O BARs and vice versa.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
PCI: Fix pci_mmap_fits() for HAVE_PCI_RESOURCE_TO_USER platforms 2017-05-25T13:44:47+00:00 David Woodhouse dwmw@amazon.co.uk 2017-04-12T12:25:50+00:00 fa3bbb1c7f06e4e09f3c72ef42622ba260c77dc4 commit 6bccc7f426abd640f08d8c75fb22f99483f201b4 upstream. In the PCI_MMAP_PROCFS case when the address being passed by the user is a 'user visible' resource address based on the bus window, and not the actual contents of the resource, that's what we need to be checking it against. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6bccc7f426abd640f08d8c75fb22f99483f201b4 upstream.

In the PCI_MMAP_PROCFS case when the address being passed by the user is a
'user visible' resource address based on the bus window, and not the actual
contents of the resource, that's what we need to be checking it against.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>