diff options
| author | Daniel Scheller <[email protected]> | 2017-08-23 12:09:58 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <[email protected]> | 2017-08-27 06:35:13 -0400 |
| commit | 6b852620fa75d3137929538b4a9aec2f953ff03c (patch) | |
| tree | cba4ee9ccc44b17acfe77d73505ec92709cd74f7 /lib/pm-notifier-error-inject.c | |
| parent | e59eb4adf0d79fe7692c08c07445ec9efc8ddc1c (diff) | |
media: dvb-frontends/stv0910: release lock on gate_ctrl() failure
Whenever write_reg() fails to open/close the demod's I2C gate, release the
lock to avoid deadlocking situations. If I2c gate open failed, there's no
need to hold a lock, and if close fails, the mutex_unlock() at the end of
the function is never reached, leaving the mutex_lock in locked state,
which in turn will cause potential for deadlocks. Thus, release the lock
on failure.
While we're touching gate_ctrl(), add some explanation about the need for
locking and the shared I2C bus/gate.
Cc: Julia Lawall <[email protected]>
Signed-off-by: Daniel Scheller <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Diffstat (limited to 'lib/pm-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions