diff mbox series

[06/11] media: drxk_hard: switch to i2c_lock_segment

Message ID 20180615101506.8012-7-peda@axentia.se
State Superseded
Headers show
Series Split i2c_lock_adapter into i2c_lock_root and i2c_lock_segment | expand

Commit Message

Peter Rosin June 15, 2018, 10:15 a.m. UTC 
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 <peda@axentia.se>
---
 drivers/media/dvb-frontends/drxk_hard.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

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;
 }