This patch removes a redundant mutex_lock in fops_read. Every rds read attempt would stall otherwise.
Signed-off-by: Tobias Lorenz <[email protected]> --- drivers/media/radio/si470x/radio-si470x-common.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/drivers/media/radio/si470x/radio-si470x-common.c b/drivers/media/radio/si470x/radio-si470x-common.c index ac76dfe..5cbeeb3 100644 --- a/drivers/media/radio/si470x/radio-si470x-common.c +++ b/drivers/media/radio/si470x/radio-si470x-common.c @@ -438,7 +438,6 @@ static ssize_t si470x_fops_read(struct file *file, char __user *buf, unsigned int block_count = 0; /* switch on rds reception */ - mutex_lock(&radio->lock); if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) si470x_rds_on(radio); @@ -479,9 +478,9 @@ static ssize_t si470x_fops_read(struct file *file, char __user *buf, buf += 3; retval += 3; } + mutex_unlock(&radio->lock); done: - mutex_unlock(&radio->lock); return retval; } -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
