diff options
| -rw-r--r-- | drivers/media/video/pwc/pwc-v4l.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/drivers/media/video/pwc/pwc-v4l.c b/drivers/media/video/pwc/pwc-v4l.c index 97e8d629582c..566b09c79802 100644 --- a/drivers/media/video/pwc/pwc-v4l.c +++ b/drivers/media/video/pwc/pwc-v4l.c @@ -575,18 +575,14 @@ static int pwc_s_input(struct file *file, void *fh, unsigned int i) return i ? -EINVAL : 0; } -static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +static int pwc_g_volatile_ctrl_unlocked(struct v4l2_ctrl *ctrl) { struct pwc_device *pdev = container_of(ctrl->handler, struct pwc_device, ctrl_handler); int ret = 0; - mutex_lock(&pdev->udevlock); - - if (!pdev->udev) { - ret = -ENODEV; - goto leave; - } + if (!pdev->udev) + return -ENODEV; switch (ctrl->id) { case V4L2_CID_AUTO_WHITE_BALANCE: @@ -651,7 +647,17 @@ static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl) if (ret) PWC_ERROR("g_ctrl %s error %d\n", ctrl->name, ret); -leave: + return ret; +} + +static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + struct pwc_device *pdev = + container_of(ctrl->handler, struct pwc_device, ctrl_handler); + int ret; + + mutex_lock(&pdev->udevlock); + ret = pwc_g_volatile_ctrl_unlocked(ctrl); mutex_unlock(&pdev->udevlock); return ret; } @@ -669,6 +675,15 @@ static int pwc_set_awb(struct pwc_device *pdev) if (pdev->auto_white_balance->val != awb_manual) pdev->color_bal_valid = false; /* Force cache update */ + + /* + * If this is a preset, update our red / blue balance values + * so that events get generated for the new preset values + */ + if (pdev->auto_white_balance->val == awb_indoor || + pdev->auto_white_balance->val == awb_outdoor || + pdev->auto_white_balance->val == awb_fl) + pwc_g_volatile_ctrl_unlocked(pdev->auto_white_balance); } if (pdev->auto_white_balance->val != awb_manual) return 0; |