diff options
Diffstat (limited to 'drivers/media/dvb-frontends')
| -rw-r--r-- | drivers/media/dvb-frontends/stv0910.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/media/dvb-frontends/stv0910.c b/drivers/media/dvb-frontends/stv0910.c index 73f6df0abbfe..4b7e901220e4 100644 --- a/drivers/media/dvb-frontends/stv0910.c +++ b/drivers/media/dvb-frontends/stv0910.c @@ -1241,7 +1241,8 @@ static int gate_ctrl(struct dvb_frontend *fe, int enable) if (write_reg(state, state->nr ? RSTV0910_P2_I2CRPT : RSTV0910_P1_I2CRPT, i2crpt) < 0) { /* don't hold the I2C bus lock on failure */ - mutex_unlock(&state->base->i2c_lock); + if (!WARN_ON(!mutex_is_locked(&state->base->i2c_lock))) + mutex_unlock(&state->base->i2c_lock); dev_err(&state->base->i2c->dev, "%s() write_reg failure (enable=%d)\n", __func__, enable); @@ -1251,7 +1252,8 @@ static int gate_ctrl(struct dvb_frontend *fe, int enable) state->i2crpt = i2crpt; if (!enable) - mutex_unlock(&state->base->i2c_lock); + if (!WARN_ON(!mutex_is_locked(&state->base->i2c_lock))) + mutex_unlock(&state->base->i2c_lock); return 0; } |