[PATCH 06/11] media: drxk_hard: switch to i2c_lock_segment
From: Peter Rosin <hidden>
Date: 2018-06-15 10:17:38
Also in:
linux-i2c, linux-iio, linux-input, linux-integrity, linux-media, linux-samsung-soc, linux-tegra, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
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_segment. If the device does not sit behind a mux-locked mux, the two locking variants are equivalent. Signed-off-by: Peter Rosin <redacted> --- drivers/media/dvb-frontends/drxk_hard.c | 4 ++-- 1 file 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..10e6bb158712 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_segment(state->i2c); 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_segment(state->i2c); state->drxk_i2c_exclusive_lock = false; }
--
2.11.0