linux-stable.git/drivers/staging, branch v4.9.69

cec: initiator should be the same as the destination for, poll

2017-12-09T21:01:54+00:00

[ Upstream commit 42980da2eb7eb9695d8efc0c0ef145cbbb993b2c ]

Poll messages that are used to allocate a logical address should
use the same initiator as the destination. Instead, it expected that
the initiator was 0xf which is not according to the standard.

This also had consequences for the message checks in cec_transmit_msg_fh
that incorrectly rejected poll messages with the same initiator and
destination.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

mm: avoid returning VM_FAULT_RETRY from ->page_mkwrite handlers

2017-12-09T21:01:54+00:00

[ Upstream commit 0911d0041c22922228ca52a977d7b0b0159fee4b ]

Some ->page_mkwrite handlers may return VM_FAULT_RETRY as its return
code (GFS2 or Lustre can definitely do this).  However VM_FAULT_RETRY
from ->page_mkwrite is completely unhandled by the mm code and results
in locking and writeably mapping the page which definitely is not what
the caller wanted.

Fix Lustre and block_page_mkwrite_ret() used by other filesystems
(notably GFS2) to return VM_FAULT_NOPAGE instead which results in
bailing out from the fault code, the CPU then retries the access, and we
fault again effectively doing what the handler wanted.

Link: http://lkml.kernel.org/r/20170203150729.15863-1-jack@suse.cz
Signed-off-by: Jan Kara 
Reported-by: Al Viro 
Reviewed-by: Jinshan Xiong 
Cc: Matthew Wilcox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

staging: rtl8188eu: avoid a null dereference on pmlmepriv

2017-12-09T21:01:48+00:00

[ Upstream commit 123c0aab0050cd0e07ce18e453389fbbb0a5a425 ]

There is a check on pmlmepriv before dereferencing it when
vfree'ing pmlmepriv->free_bss_buf however the previous call
to rtw_free_mlme_priv_ie_data deferences pmlmepriv causing
a null pointer deference if it is null.  Avoid this by also
calling rtw_free_mlme_priv_ie_data if the pointer is non-null.

Detected by CoverityScan, CID#1230262 ("Dereference before null check")
Fixes: 7b464c9fa5cc ("staging: r8188eu: Add files for new driver - part 4")
Signed-off-by: Colin Ian King 
Signed-off-by: Greg Kroah-Hartman 

Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

staging: greybus: loopback: Fix iteration count on async path

2017-12-09T21:01:48+00:00

[ Upstream commit 44b02da39210e6dd67e39ff1f48d30c56d384240 ]

Commit 12927835d211 ("greybus: loopback: Add asynchronous bi-directional
support") does what it says on the tin - namely, adds support for
asynchronous bi-directional loopback operations.

What it neglects to do though is increment the per-connection
gb->iteration_count on an asynchronous operation error. This patch fixes
that omission.

Fixes: 12927835d211 ("greybus: loopback: Add asynchronous bi-directional support")

Signed-off-by: Bryan O'Donoghue 
Reported-by: Mitch Tasman 
Reviewed-by: Johan Hovold 
Cc: Alex Elder 
Cc: Mitch Tasman 
Cc: greybus-dev@lists.linaro.org
Cc: devel@driverdev.osuosl.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

cec: update log_addr[] before finishing configuration

2017-11-30T08:39:15+00:00

[ Upstream commit 7af26f889eb67db272021a939f7d4a57e96dd961 ]

The loop that sets the unused logical addresses to INVALID should be
done before 'configured' is set to true. This ensures that cec_log_addrs
is consistent before it will be used.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

cec: CEC_MSG_GIVE_FEATURES should abort for CEC version < 2

2017-11-30T08:39:14+00:00

[ Upstream commit a24f56d47930492c94ef6875bf45adf7607ca1a4 ]

This is a 2.0 only message, so it should return Feature Abort if the
adapter is configured for CEC version 1.4.

Right now it does nothing, which means that the sender will time out.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

cec: when canceling a message, don't overwrite old status info

2017-11-30T08:39:14+00:00

[ Upstream commit 120476123646ba3619c90db7bcbc6f8eea53c990 ]

When a pending message was canceled (e.g. due to a timeout), then the
old tx_status info was overwritten instead of ORed. The same happened
with the tx_error_cnt field. So just modify them instead of overwriting
them.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

staging: iio: cdc: fix improper return value

2017-11-30T08:39:13+00:00

[ Upstream commit 91ca1a8c584f55857b1f6ab20a1d3a1ce7a559bb ]

At the end of function ad7150_write_event_config(), directly returns 0.
As a result, the errors will be ignored by the callers. It may be better
to return variable "ret".

Signed-off-by: Pan Bian 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

staging: greybus: spilib: fix use-after-free after deregistration

2017-11-21T08:23:30+00:00

commit 770b03c2ca4aa44d226cf248f86aa23e546147d0 upstream.

Remove erroneous spi_master_put() after controller deregistration which
would access the already freed spi controller.

Note that spi_unregister_master() drops our only controller reference.

Fixes: ba3e67001b42 ("greybus: SPI: convert to a gpbridge driver")
Signed-off-by: Johan Hovold 
Reviewed-by: Rui Miguel Silva 
Acked-by: Viresh Kumar 
Signed-off-by: Greg Kroah-Hartman

staging: greybus: add host device function pointer checks

2017-11-21T08:23:27+00:00

[ Upstream commit f05a88a39c5b5f226e08e626998bb920723b7d85 ]

Add sanity checks for cport_quiesce and cport_clear before invoking the
callbacks as these function pointers are not required during the host
device registration. This follows the logic implemented elsewhere for
various other function pointers.

Signed-off-by: Jason Hrycay 
Reviewed-by: Bryan O'Donoghue 
Acked-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman