linux.git/drivers/media/cec/core, branch v5.16

media: cec: copy sequence field for the reply

2021-11-10T11:39:08+00:00

When the reply for a non-blocking transmit arrives, the sequence
field for that reply was never filled in, so userspace would have no
way of associating the reply to the original transmit.

Copy the sequence field to ensure that this is now possible.

Signed-off-by: Hans Verkuil 
Fixes: 0dbacebede1e ([media] cec: move the CEC framework out of staging and to media)
Cc: 
Signed-off-by: Mauro Carvalho Chehab

media: cec-pin: fix off-by-one SFT check

2021-09-30T08:07:54+00:00

The CEC pin framework has to wait for the CEC bus to be idle for the
requested Signal Free Time before it can start a transmit.

However, the check for that was off by one, so transmits would start one
bit period (2.4ms) too late.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: cec-pin: rename timer overrun variables

2021-08-04T12:43:52+00:00

The cec pin timer overruns are measured in microseconds, but the variable
names include the millisecond symbol "ms". To avoid confusion, replace
"ms" with "us" in the variable names and printed status message.

Signed-off-by: Deborah Brouwer 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: cec/core: clarify rx-arb-lost usage message

2021-04-06T14:08:38+00:00

The rx-arb-lost error injection command only works with  set to 'any'.
Explicitly say so in the usage message.

Also use [] to indicate that the  argument is optional.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: cec/core/cec-notifier: use IS_REACHABLE(CONFIG_I2C)

2021-03-22T09:24:44+00:00

If CONFIG_I2C=m and CONFIG_CEC_CORE=y then of_find_i2c_device_by_node()
is not reachable. So use IS_REACHABLE instead of IS_ENABLED.

Signed-off-by: Hans Verkuil 
Fixes: a62943c145c1 ("media: cec-notifier: also search for HDMI devices on I2C")
Reported-by: kernel test robot 
Signed-off-by: Mauro Carvalho Chehab

media: cec-notifier: also search for HDMI devices on I2C

2021-03-11T10:59:44+00:00

Currently the cec_notifier_parse_hdmi_phandle function can only be used
if the HDMI device associated with the CEC device is a platform device.
Extend the function to cover I2C devices as well, as there do exist
some I2C HDMI devices which don't handle CEC internally and need an
external CEC adapter.

[hverkuil: add missing linux/i2c.h header]
[hverkuil: only attempt to find the i2c device if CONFIG_I2C is set]

Signed-off-by: Johan Fjeldtvedt 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: cec: fix trivial style warnings

2021-01-12T17:20:01+00:00

Comment has 'then' repeated twice. Let's clean it up.
Use unsigned int to maintain naming consistency.

Signed-off-by: Nigel Christian 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: cec: add EPOLLPRI in poll() when dev is unregistered

2021-01-04T12:16:48+00:00

If the CEC device was unregistered, then add EPOLLPRI to
the poll() mask. Otherwise a select() that only waits for
exceptions will not wake up. A select() that waits for
read and/or write events *will* wake up on an EPOLLERR, but
not (for some reason) if it just waits for exceptions.

Strangly the epoll functionality will wakeup on EPOLLERR if
you just wait for an exception, so in this respect select()
and epoll differ.

In the end it doesn't really matter, what matters is that
polling file handles are woken up on device unregistration.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: cec-core: first mark device unregistered, then wake up fhs

2020-11-16T09:31:09+00:00

If a CEC device node is unregistered, then it should be marked as
unregistered before waking up any filehandles that are waiting for
an event.

This ensures that there is no race condition where an application can
call CEC_DQEVENT and have the ioctl return 0 instead of ENODEV.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

Merge tag 'v5.9-rc7' into patchwork

2020-10-04T10:19:12+00:00

Linux 5.9-rc7

* tag 'v5.9-rc7': (683 commits)
  Linux 5.9-rc7
  mm/thp: Split huge pmds/puds if they're pinned when fork()
  mm: Do early cow for pinned pages during fork() for ptes
  mm/fork: Pass new vma pointer into copy_page_range()
  mm: Introduce mm_struct.has_pinned
  mm: validate pmd after splitting
  mm: don't rely on system state to detect hot-plug operations
  mm: replace memmap_context by meminit_context
  arch/x86/lib/usercopy_64.c: fix __copy_user_flushcache() cache writeback
  lib/memregion.c: include memregion.h
  lib/string.c: implement stpcpy
  mm/migrate: correct thp migration stats
  mm/gup: fix gup_fast with dynamic page table folding
  mm: memcontrol: fix missing suffix of workingset_restore
  mm, THP, swap: fix allocating cluster for swapfile by mistake
  mm: slab: fix potential double free in ___cache_free
  Documentation/llvm: Fix clang target examples
  io_uring: ensure async buffered read-retry is setup properly
  KVM: SVM: Add a dedicated INVD intercept routine
  io_uring: don't unconditionally set plug->nowait = true
  ...