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

From: Peter Rosin
Date: Fri Jun 15 2018 - 06:17:40 EST


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@xxxxxxxxxx>
---
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