linux-toradex.git/drivers, branch v4.9.49

drm/bridge: adv7511: Switch to using drm_kms_helper_hotplug_event()

2017-09-09T15:39:42+00:00

commit 6d5104c5a6b56385426e15047050584794bb6254 upstream.

In chasing down a previous issue with EDID probing from calling
drm_helper_hpd_irq_event() from irq context, Laurent noticed
that the DRM documentation suggests that
drm_kms_helper_hotplug_event() should be used instead.

Thus this patch replaces drm_helper_hpd_irq_event() with
drm_kms_helper_hotplug_event(), which requires we update the
connector.status entry and only call _hotplug_event() when the
status changes.

Cc: David Airlie 
Cc: Archit Taneja 
Cc: Wolfram Sang 
Cc: Lars-Peter Clausen 
Cc: Laurent Pinchart 
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Laurent Pinchart 
Tested-by: Laurent Pinchart 
Signed-off-by: John Stultz 
Signed-off-by: Archit Taneja 
Link: http://patchwork.freedesktop.org/patch/msgid/1484614372-15342-3-git-send-email-john.stultz@linaro.org
Signed-off-by: Thong Ho 
Signed-off-by: Nhan Nguyen 
Signed-off-by: Greg Kroah-Hartman

drm/bridge: adv7511: Use work_struct to defer hotplug handing to out of irq context

2017-09-09T15:39:42+00:00

commit 518cb7057a59b9441336d2e88a396d52b6ab0cce upstream.

I was recently seeing issues with EDID probing, where
the logic to wait for the EDID read bit to be set by the
IRQ wasn't happening and the code would time out and fail.

Digging deeper, I found this was due to the fact that
IRQs were disabled as we were running in IRQ context from
the HPD signal.

Thus this patch changes the logic to handle the HPD signal
via a work_struct so we can be out of irq context.

With this patch, the EDID probing on hotplug does not time
out.

Cc: David Airlie 
Cc: Archit Taneja 
Cc: Wolfram Sang 
Cc: Lars-Peter Clausen 
Cc: Laurent Pinchart 
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Laurent Pinchart 
Tested-by: Laurent Pinchart 
Signed-off-by: John Stultz 
Signed-off-by: Archit Taneja 
Link: http://patchwork.freedesktop.org/patch/msgid/1484614372-15342-2-git-send-email-john.stultz@linaro.org
Signed-off-by: Thong Ho 
Signed-off-by: Nhan Nguyen 
Signed-off-by: Greg Kroah-Hartman

scsi: sg: recheck MMAP_IO request length with lock held

2017-09-09T15:39:42+00:00

commit 8d26f491116feaa0b16de370b6a7ba40a40fa0b4 upstream.

Commit 1bc0eb044615 ("scsi: sg: protect accesses to 'reserved' page
array") adds needed concurrency protection for the "reserve" buffer.
Some checks that are initially made outside the lock are replicated once
the lock is taken to ensure the checks and resulting decisions are made
using consistent state.

The check that a request with flag SG_FLAG_MMAP_IO set fits in the
reserve buffer also needs to be performed again under the lock to ensure
the reserve buffer length compared against matches the value in effect
when the request is linked to the reserve buffer.  An -ENOMEM should be
returned in this case, instead of switching over to an indirect buffer
as for non-MMAP_IO requests.

Signed-off-by: Todd Poynor 
Acked-by: Douglas Gilbert 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Greg Kroah-Hartman

scsi: sg: protect against races between mmap() and SG_SET_RESERVED_SIZE

2017-09-09T15:39:42+00:00

commit 6a8dadcca81fceff9976e8828cceb072873b7bd5 upstream.

Take f_mutex around mmap() processing to protect against races with the
SG_SET_RESERVED_SIZE ioctl.  Ensure the reserve buffer length remains
consistent during the mapping operation, and set the "mmap called" flag
to prevent further changes to the reserved buffer size as an atomic
operation with the mapping.

[mkp: fixed whitespace]

Signed-off-by: Todd Poynor 
Acked-by: Douglas Gilbert 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Greg Kroah-Hartman

cs5536: add support for IDE controller variant

2017-09-09T15:39:41+00:00

commit 591b6bb605785c12a21e8b07a08a277065b655a5 upstream.

Several legacy devices such as Geode-based Cisco ASA appliances
and DB800 development board do possess CS5536 IDE controller
with different PCI id than existing one. Using pata_generic is
not always feasible as at least DB800 requires MSR quirk from
pata_cs5536 to be used with vendor firmware.

Signed-off-by: Andrey Korolyov 
Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

drm/nouveau/pci/msi: disable MSI on big-endian platforms by default

2017-09-09T15:39:41+00:00

commit bc60c90f472b6e762ea96ef384072145adc8d4af upstream.

It appears that MSI does not work on either G5 PPC nor on a E5500-based
platform, where other hardware is reported to work fine with MSI.

Both tests were conducted with NV4x hardware, so perhaps other (or even
this) hardware can be made to work. It's still possible to force-enable
with config=NvMSI=1 on load.

Signed-off-by: Ilia Mirkin 
Signed-off-by: Ben Skeggs 
Signed-off-by: Greg Kroah-Hartman

MCB: add support for SC31 to mcb-lpc

2017-09-09T15:39:41+00:00

commit acf5e051ac44d5dc60b21bc4734ef1b844d55551 upstream.

This patch adds the resources and DMI ID's for the MEN SC31,
which uses a different address region to map the LPC bus than
the one used for the existing SC24.

Signed-off-by: Michael Moese 
[jth add stable tag]
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

mwifiex: correct channel stat buffer overflows

2017-09-09T15:39:40+00:00

commit 4b5dde2d6234ff5bc68e97e6901d1f2a0a7f3749 upstream.

mwifiex records information about various channels as it receives scan
information. It does this by appending to a buffer that was sized
to the max number of supported channels on any band, but there are
numerous problems:

(a) scans can return info from more than one band (e.g., both 2.4 and 5
    GHz), so the determined "max" is not large enough
(b) some firmware appears to return multiple results for a given
    channel, so the max *really* isn't large enough
(c) there is no bounds checking when stashing these stats, so problems
    (a) and (b) can easily lead to buffer overflows

Let's patch this by setting a slightly-more-correct max (that accounts
for a combination of both 2.4G and 5G bands) and adding a bounds check
when writing to our statistics buffer.

Due to problem (b), we still might not properly report all known survey
information (e.g., with "iw  survey dump"), since duplicate results
(or otherwise "larger than expected" results) will cause some
truncation. But that's a problem for a future bugfix.

(And because of this known deficiency, only log the excess at the WARN
level, since that isn't visible by default in this driver and would
otherwise be a bit too noisy.)

Fixes: bf35443314ac ("mwifiex: channel statistics support for mwifiex")
Cc: Avinash Patil 
Cc: Xinming Hu 
Signed-off-by: Brian Norris 
Reviewed-by: Dmitry Torokhov 
Reviewed-by: Ganapathi Bhat 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: pci: add new PCI ID for 7265D

2017-09-09T15:39:40+00:00

commit 3f7a5e13e85026b6e460bbd6e87f87379421d272 upstream.

We have a new PCI subsystem ID for 7265D.  Add it to the list.

Signed-off-by: Luca Coelho 
Signed-off-by: Greg Kroah-Hartman

Bluetooth: Add support of 13d3:3494 RTL8723BE device

2017-09-09T15:39:40+00:00

commit a81d72d2002d6a932bd83022cbf8c442b1b97512 upstream.

T: Bus=02 Lev=01 Prnt=01 Port=03 Cnt=03 Dev#= 4 Spd=12 MxCh= 0
D: Ver= 2.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=13d3 ProdID=3494 Rev= 2.00
S: Manufacturer=Realtek
S: Product=Bluetooth Radio
S: SerialNumber=00e04c000001
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms

Signed-off-by: Dmitry Tunin 
Signed-off-by: Marcel Holtmann 
Signed-off-by: Greg Kroah-Hartman