Powering off a device is a "best effort" task: failure to execute one of
the steps should not prevent the next steps to be executed. For
instance, an I2C communication error when putting the chip in stand-by
mode should not prevent the more agressive next step of turning the
chip's power supply off.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/media/video/soc_camera.c | 22 ++++++++++++++--------
1 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c
index 55b981f..7bf21da 100644
--- a/drivers/media/video/soc_camera.c
+++ b/drivers/media/video/soc_camera.c
@@ -89,24 +89,30 @@ static int soc_camera_power_off(struct soc_camera_device *icd,
struct soc_camera_link *icl)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
- int ret = v4l2_subdev_call(sd, core, s_power, 0);
+ int ret = 0;
+ int err;
- if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
- return ret;
+ err = v4l2_subdev_call(sd, core, s_power, 0);
+ if (err < 0 && err != -ENOIOCTLCMD && err != -ENODEV) {
+ dev_err(icd->pdev, "Subdev failed to power-off the camera.\n");
+ ret = err;
+ }
if (icl->power) {
- ret = icl->power(icd->control, 0);
- if (ret < 0) {
+ err = icl->power(icd->control, 0);
+ if (err < 0) {
dev_err(icd->pdev,
"Platform failed to power-off the camera.\n");
- return ret;
+ ret = ret ? : err;
}
}
- ret = regulator_bulk_disable(icl->num_regulators,
+ err = regulator_bulk_disable(icl->num_regulators,
icl->regulators);
- if (ret < 0)
+ if (err < 0) {
dev_err(icd->pdev, "Cannot disable regulators\n");
+ ret = ret ? : err;
+ }
return ret;
}
--
1.7.8.6
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