diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-03-23 08:43:51 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-04-13 12:55:38 (GMT) |
| commit | cb743930eb91e5b608c4491ce1b930dfeca43943 (patch) | |
| tree | 5c54a2f5f1c90affea51917a21c1e928dc0638c9 /drivers/media | |
| parent | c8dd707805af100965c93cdca7d61e61165e9c07 (diff) | |
| download | linux-cb743930eb91e5b608c4491ce1b930dfeca43943.tar.xz | |
[media] sh_mobile_csi2: fix module reloading
If the camera host driver (sh_mobile_ceu_camera.c) is unloaded and then
reloaded, probe will fail, because camera client .set_bus_param() and
.query_bus_param() methods have been set to NULL. Fix this by caching
the original pointers and restoring them on driver-unbind.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/sh_mobile_csi2.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/media/video/sh_mobile_csi2.c b/drivers/media/video/sh_mobile_csi2.c index 9e7c1a7..98b8748 100644 --- a/drivers/media/video/sh_mobile_csi2.c +++ b/drivers/media/video/sh_mobile_csi2.c @@ -38,6 +38,8 @@ struct sh_csi2 { void __iomem *base; struct platform_device *pdev; struct sh_csi2_client_config *client; + unsigned long (*query_bus_param)(struct soc_camera_device *); + int (*set_bus_param)(struct soc_camera_device *, unsigned long); }; static int sh_csi2_try_fmt(struct v4l2_subdev *sd, @@ -216,6 +218,8 @@ static int sh_csi2_notify(struct notifier_block *nb, priv->client = pdata->clients + i; + priv->set_bus_param = icd->ops->set_bus_param; + priv->query_bus_param = icd->ops->query_bus_param; icd->ops->set_bus_param = sh_csi2_set_bus_param; icd->ops->query_bus_param = sh_csi2_query_bus_param; @@ -227,8 +231,10 @@ static int sh_csi2_notify(struct notifier_block *nb, priv->client = NULL; /* Driver is about to be unbound */ - icd->ops->set_bus_param = NULL; - icd->ops->query_bus_param = NULL; + icd->ops->set_bus_param = priv->set_bus_param; + icd->ops->query_bus_param = priv->query_bus_param; + priv->set_bus_param = NULL; + priv->query_bus_param = NULL; v4l2_device_unregister_subdev(&priv->subdev); |