diff options
| author | Peter Rosin <peda@axentia.se> | 2018-06-20 07:17:58 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2018-07-13 00:09:21 +0200 |
| commit | c060a9fe07426dc030c9481493ad59b6459d7c46 (patch) | |
| tree | 97200aacc3c9a6809fc15dafe5b469d48eda2730 /drivers/media/dvb-frontends/drxk_hard.c | |
| parent | b1e1ca27570016e3aa0e3265df699fea87013abc (diff) | |
| download | linux-c060a9fe07426dc030c9481493ad59b6459d7c46.tar.bz2 | |
media: drxk_hard: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
Locking the root adapter for __i2c_transfer will deadlock if the
device sits behind a mux-locked I2C mux. Switch to the finer-grained
i2c_lock_bus with the I2C_LOCK_SEGMENT flag. If the device does not
sit behind a mux-locked mux, the two locking variants are equivalent.
Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/media/dvb-frontends/drxk_hard.c')
| -rw-r--r-- | drivers/media/dvb-frontends/drxk_hard.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/dvb-frontends/drxk_hard.c b/drivers/media/dvb-frontends/drxk_hard.c index 5a26ad93be10..29c36f95d624 100644 --- a/drivers/media/dvb-frontends/drxk_hard.c +++ b/drivers/media/dvb-frontends/drxk_hard.c @@ -213,7 +213,7 @@ static inline u32 log10times100(u32 value) static int drxk_i2c_lock(struct drxk_state *state) { - i2c_lock_adapter(state->i2c); + i2c_lock_bus(state->i2c, I2C_LOCK_SEGMENT); state->drxk_i2c_exclusive_lock = true; return 0; @@ -224,7 +224,7 @@ static void drxk_i2c_unlock(struct drxk_state *state) if (!state->drxk_i2c_exclusive_lock) return; - i2c_unlock_adapter(state->i2c); + i2c_unlock_bus(state->i2c, I2C_LOCK_SEGMENT); state->drxk_i2c_exclusive_lock = false; } |