linux-kernel - [PATCH 4.19 110/110] media: ov5640: fix auto controls values when switching to manual mode

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Date:   Thu, 29 Nov 2018 15:13:21 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hugues Fruchet <hugues.fruchet@...com>,
        Jacopo Mondi <jacopo@...ndi.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Adam Ford <aford173@...il.com>
Subject: [PATCH 4.19 110/110] media: ov5640: fix auto controls values when switching to manual mode

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hugues Fruchet <hugues.fruchet@...com>

commit a8f438c684eaa4cbe6c98828eb996d5ec53e24fb upstream.

When switching from auto to manual mode, V4L2 core is calling
g_volatile_ctrl() in manual mode in order to get the manual initial value.
Remove the manual mode check/return to not break this behaviour.

Signed-off-by: Hugues Fruchet <hugues.fruchet@...com>
Tested-by: Jacopo Mondi <jacopo@...ndi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Signed-off-by: Adam Ford <aford173@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/media/i2c/ov5640.c |    4 ----
 1 file changed, 4 deletions(-)

--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -2337,16 +2337,12 @@ static int ov5640_g_volatile_ctrl(struct
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUTOGAIN:
-		if (!ctrl->val)
-			return 0;
 		val = ov5640_get_gain(sensor);
 		if (val < 0)
 			return val;
 		sensor->ctrls.gain->val = val;
 		break;
 	case V4L2_CID_EXPOSURE_AUTO:
-		if (ctrl->val == V4L2_EXPOSURE_MANUAL)
-			return 0;
 		val = ov5640_get_exposure(sensor);
 		if (val < 0)
 			return val;