[git:media_stage/master] media: dvb-frontends/stv090x: Refactor tuner_i2c_lock

[Hans Verkuil]

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Subject: media: dvb-frontends/stv090x: Refactor tuner_i2c_lock
Author:  Ricardo Ribalda <riba...@chromium.org>
Date:    Mon May 6 21:10:28 2024 +0000

Move the lock logic to it's own function. There is less code duplication
and cocci is much happier.

Fix the following cocci warning:
drivers/media/dvb-frontends/stv090x.c:799:1-7: preceding lock on line 768

Signed-off-by: Ricardo Ribalda <riba...@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>

 drivers/media/dvb-frontends/stv090x.c | 37 ++++++++++++++++++++---------------
 1 file changed, 21 insertions(+), 16 deletions(-)

---

diff --git a/drivers/media/dvb-frontends/stv090x.c 
b/drivers/media/dvb-frontends/stv090x.c
index cc45139057ba..3b02d504941f 100644
--- a/drivers/media/dvb-frontends/stv090x.c
+++ b/drivers/media/dvb-frontends/stv090x.c
@@ -748,6 +748,22 @@ static int stv090x_write_reg(struct stv090x_state *state, 
unsigned int reg, u8 d
        return stv090x_write_regs(state, reg, &tmp, 1);
 }
 
+static inline void stv090x_tuner_i2c_lock(struct stv090x_state *state)
+{
+       if (state->config->tuner_i2c_lock)
+               state->config->tuner_i2c_lock(&state->frontend, 1);
+       else
+               mutex_lock(&state->internal->tuner_lock);
+}
+
+static inline void stv090x_tuner_i2c_unlock(struct stv090x_state *state)
+{
+       if (state->config->tuner_i2c_lock)
+               state->config->tuner_i2c_lock(&state->frontend, 0);
+       else
+               mutex_unlock(&state->internal->tuner_lock);
+}
+
 static int stv090x_i2c_gate_ctrl(struct stv090x_state *state, int enable)
 {
        u32 reg;
@@ -761,12 +777,8 @@ static int stv090x_i2c_gate_ctrl(struct stv090x_state 
*state, int enable)
         * In case of any error, the lock is unlocked and exit within the
         * relevant operations themselves.
         */
-       if (enable) {
-               if (state->config->tuner_i2c_lock)
-                       state->config->tuner_i2c_lock(&state->frontend, 1);
-               else
-                       mutex_lock(&state->internal->tuner_lock);
-       }
+       if (enable)
+               stv090x_tuner_i2c_lock(state);
 
        reg = STV090x_READ_DEMOD(state, I2CRPT);
        if (enable) {
@@ -782,20 +794,13 @@ static int stv090x_i2c_gate_ctrl(struct stv090x_state 
*state, int enable)
                        goto err;
        }
 
-       if (!enable) {
-               if (state->config->tuner_i2c_lock)
-                       state->config->tuner_i2c_lock(&state->frontend, 0);
-               else
-                       mutex_unlock(&state->internal->tuner_lock);
-       }
+       if (!enable)
+               stv090x_tuner_i2c_unlock(state);
 
        return 0;
 err:
        dprintk(FE_ERROR, 1, "I/O error");
-       if (state->config->tuner_i2c_lock)
-               state->config->tuner_i2c_lock(&state->frontend, 0);
-       else
-               mutex_unlock(&state->internal->tuner_lock);
+       stv090x_tuner_i2c_unlock(state);
        return -1;
 }