From 24592adce89805c99eb23d1e37aa8a66aaacee05 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 18 Jul 2012 10:54:02 -0300 Subject: [PATCH] [media] soc-camera: Continue the power off sequence if one of the steps fails 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 Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/soc_camera.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/soc_camera.c b/drivers/media/platform/soc_camera.c index a6d484f..3feb43b 100644 --- a/drivers/media/platform/soc_camera.c +++ b/drivers/media/platform/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; } -- 2.7.4