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| author | Daniel Jeong <gshark.jeong@gmail.com> | 2013-12-06 02:43:27 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-12-09 10:22:55 -0200 |
| commit | e1c759bd3daf7a59f0d6a6fa06ca237307da7879 (patch) | |
| tree | 4d047cb79f78a855b35a552c6b8bdeb17c0dfef9 /drivers/media/i2c/lm3560.c | |
| parent | dc793175c5b532f343fe2224afd9189130da0004 (diff) | |
| download | lwn-e1c759bd3daf7a59f0d6a6fa06ca237307da7879.tar.gz lwn-e1c759bd3daf7a59f0d6a6fa06ca237307da7879.zip | |
[media] media: i2c: lm3560: fix missing unlock on error, fault handling
Correct reference of reading values. (rval -> reg_val)
Add the missing unlock before return from function lm3560_get_ctrl()
to avoid deadlock.
Thank you Dan Carpenter & Sakari.
Signed-off-by: Daniel Jeong <gshark.jeong@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/i2c/lm3560.c')
| -rw-r--r-- | drivers/media/i2c/lm3560.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/media/i2c/lm3560.c b/drivers/media/i2c/lm3560.c index 3317a9ae3961..ab5857d66f2d 100644 --- a/drivers/media/i2c/lm3560.c +++ b/drivers/media/i2c/lm3560.c @@ -172,28 +172,28 @@ static int lm3560_flash_brt_ctrl(struct lm3560_flash *flash, static int lm3560_get_ctrl(struct v4l2_ctrl *ctrl, enum lm3560_led_id led_no) { struct lm3560_flash *flash = to_lm3560_flash(ctrl, led_no); + int rval = -EINVAL; mutex_lock(&flash->lock); if (ctrl->id == V4L2_CID_FLASH_FAULT) { - int rval; s32 fault = 0; unsigned int reg_val; rval = regmap_read(flash->regmap, REG_FLAG, ®_val); if (rval < 0) - return rval; - if (rval & FAULT_SHORT_CIRCUIT) + goto out; + if (reg_val & FAULT_SHORT_CIRCUIT) fault |= V4L2_FLASH_FAULT_SHORT_CIRCUIT; - if (rval & FAULT_OVERTEMP) + if (reg_val & FAULT_OVERTEMP) fault |= V4L2_FLASH_FAULT_OVER_TEMPERATURE; - if (rval & FAULT_TIMEOUT) + if (reg_val & FAULT_TIMEOUT) fault |= V4L2_FLASH_FAULT_TIMEOUT; ctrl->cur.val = fault; - return 0; } +out: mutex_unlock(&flash->lock); - return -EINVAL; + return rval; } static int lm3560_set_ctrl(struct v4l2_ctrl *ctrl, enum lm3560_led_id led_no) |