From 5ebbf72dc51bd3b481aa91fea37a7157da5fc548 Mon Sep 17 00:00:00 2001 From: archit taneja Date: Fri, 5 Aug 2011 04:19:21 -0300 Subject: [PATCH 1/6] [media] OMAP_VOUT: Fix build break caused by update_mode removal in DSS2 The DSS2 driver does not support the configuration of the update_mode of a panel anymore. Remove the setting of update_mode done in omap_vout_probe(). Ignore configuration of TE since omap_vout driver doesn't support manual update displays anyway. Signed-off-by: Archit Taneja Tested-by: Koen Kooi Signed-off-by: Vaibhav Hiremath Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/omap/omap_vout.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c index b5ef36222440..b3a5ecdb33ac 100644 --- a/drivers/media/video/omap/omap_vout.c +++ b/drivers/media/video/omap/omap_vout.c @@ -2194,19 +2194,6 @@ static int __init omap_vout_probe(struct platform_device *pdev) "'%s' Display already enabled\n", def_display->name); } - /* set the update mode */ - if (def_display->caps & - OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) { - if (dssdrv->enable_te) - dssdrv->enable_te(def_display, 0); - if (dssdrv->set_update_mode) - dssdrv->set_update_mode(def_display, - OMAP_DSS_UPDATE_MANUAL); - } else { - if (dssdrv->set_update_mode) - dssdrv->set_update_mode(def_display, - OMAP_DSS_UPDATE_AUTO); - } } } From dd182e5416e872e30d90cf071758eec1cf6340d5 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Sat, 16 Jul 2011 00:51:00 -0300 Subject: [PATCH 2/6] [media] uvcvideo: Set alternate setting 0 on resume if the bus has been reset If the bus has been reset on resume, set the alternate setting to 0. This should be the default value, but some devices crash or otherwise misbehave if they don't receive a SET_INTERFACE request before any other video control request. Microdia's 0c45:6437 camera has been found to require this change or it will stop sending video data after resume. uvc_video.c] Signed-off-by: Ming Lei Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_driver.c | 2 +- drivers/media/video/uvc/uvc_video.c | 10 +++++++++- drivers/media/video/uvc/uvcvideo.h | 2 +- 3 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c index d29f9c2d0854..e4100b1f68df 100644 --- a/drivers/media/video/uvc/uvc_driver.c +++ b/drivers/media/video/uvc/uvc_driver.c @@ -1961,7 +1961,7 @@ static int __uvc_resume(struct usb_interface *intf, int reset) list_for_each_entry(stream, &dev->streams, list) { if (stream->intf == intf) - return uvc_video_resume(stream); + return uvc_video_resume(stream, reset); } uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 8244167c8915..ffd1158628b6 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -1104,10 +1104,18 @@ int uvc_video_suspend(struct uvc_streaming *stream) * buffers, making sure userspace applications are notified of the problem * instead of waiting forever. */ -int uvc_video_resume(struct uvc_streaming *stream) +int uvc_video_resume(struct uvc_streaming *stream, int reset) { int ret; + /* If the bus has been reset on resume, set the alternate setting to 0. + * This should be the default value, but some devices crash or otherwise + * misbehave if they don't receive a SET_INTERFACE request before any + * other video control request. + */ + if (reset) + usb_set_interface(stream->dev->udev, stream->intfnum, 0); + stream->frozen = 0; ret = uvc_commit_video(stream, &stream->ctrl); diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h index df32a43ca86a..cbdd49bf8b67 100644 --- a/drivers/media/video/uvc/uvcvideo.h +++ b/drivers/media/video/uvc/uvcvideo.h @@ -638,7 +638,7 @@ extern void uvc_mc_cleanup_entity(struct uvc_entity *entity); /* Video */ extern int uvc_video_init(struct uvc_streaming *stream); extern int uvc_video_suspend(struct uvc_streaming *stream); -extern int uvc_video_resume(struct uvc_streaming *stream); +extern int uvc_video_resume(struct uvc_streaming *stream, int reset); extern int uvc_video_enable(struct uvc_streaming *stream, int enable); extern int uvc_probe_video(struct uvc_streaming *stream, struct uvc_streaming_control *probe); From 8280b662df96f4172c4972b14a4aec0daf272b8f Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 6 Sep 2011 10:23:18 -0300 Subject: [PATCH 3/6] [media] v4l: Fix use-after-free case in v4l2_device_release Drivers that have no v4l2_device release callback might free the v4l2_device instance in the video_device release callback. Make sure we don't access the v4l2_device instance after it gets freed. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-dev.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 06f14008b346..d72156517726 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -173,6 +173,17 @@ static void v4l2_device_release(struct device *cd) media_device_unregister_entity(&vdev->entity); #endif + /* Do not call v4l2_device_put if there is no release callback set. + * Drivers that have no v4l2_device release callback might free the + * v4l2_dev instance in the video_device release callback below, so we + * must perform this check here. + * + * TODO: In the long run all drivers that use v4l2_device should use the + * v4l2_device release callback. This check will then be unnecessary. + */ + if (v4l2_dev->release == NULL) + v4l2_dev = NULL; + /* Release video_device and perform other cleanups as needed. */ vdev->release(vdev); From 236c5441d70312242b5b32d229259930046a80e5 Mon Sep 17 00:00:00 2001 From: Dave Young Date: Tue, 6 Sep 2011 09:08:08 -0300 Subject: [PATCH 4/6] [media] v4l: Make sure we hold a reference to the v4l2_device before using it v4l2_device_disconnect() calls dev_get_drvdata() and dev_set_drvdata() on the device it received in v4l2_device_register(). Get a reference to the device in v4l2_device_register() to make sure it won't disappear as long as we need it. Reported-by: Sitsofe Wheeler Signed-off-by: Dave Young Tested-by: Sitsofe Wheeler Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-device.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/video/v4l2-device.c b/drivers/media/video/v4l2-device.c index c72856c41434..e6a2c3b302d4 100644 --- a/drivers/media/video/v4l2-device.c +++ b/drivers/media/video/v4l2-device.c @@ -38,6 +38,7 @@ int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev) mutex_init(&v4l2_dev->ioctl_lock); v4l2_prio_init(&v4l2_dev->prio); kref_init(&v4l2_dev->ref); + get_device(dev); v4l2_dev->dev = dev; if (dev == NULL) { /* If dev == NULL, then name must be filled in by the caller */ @@ -93,6 +94,7 @@ void v4l2_device_disconnect(struct v4l2_device *v4l2_dev) if (dev_get_drvdata(v4l2_dev->dev) == v4l2_dev) dev_set_drvdata(v4l2_dev->dev, NULL); + put_device(v4l2_dev->dev); v4l2_dev->dev = NULL; } EXPORT_SYMBOL_GPL(v4l2_device_disconnect); From 4d9b2ebd335d83044b9e6656d0e604e8e1300334 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 6 Sep 2011 19:16:18 -0300 Subject: [PATCH 5/6] [media] uvcvideo: Fix crash when linking entities The uvc_mc_register_entity() function wrongfully selects the media_entity associated with a UVC entity when creating links. This results in access to uninitialized media_entity structures and can hit a BUG_ON statement in media_entity_create_link(). Fix it. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_entity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/video/uvc/uvc_entity.c b/drivers/media/video/uvc/uvc_entity.c index 48fea373c25a..29e239911d0e 100644 --- a/drivers/media/video/uvc/uvc_entity.c +++ b/drivers/media/video/uvc/uvc_entity.c @@ -49,7 +49,7 @@ static int uvc_mc_register_entity(struct uvc_video_chain *chain, if (remote == NULL) return -EINVAL; - source = (UVC_ENTITY_TYPE(remote) != UVC_TT_STREAMING) + source = (UVC_ENTITY_TYPE(remote) == UVC_TT_STREAMING) ? (remote->vdev ? &remote->vdev->entity : NULL) : &remote->subdev.entity; if (source == NULL) From e74d83aad3709a17d68f01481f2b5f240250b1c3 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 6 Sep 2011 11:02:15 -0300 Subject: [PATCH 6/6] [media] omap3isp: Fix build error in ispccdc.c The following build error occurs with 3.1-rc5: CC drivers/media/video/omap3isp/ispccdc.o This patch adds the missing 'linux/slab.h' include to fix the problem. Signed-off-by: Joerg Roedel Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/omap3isp/ispccdc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/video/omap3isp/ispccdc.c b/drivers/media/video/omap3isp/ispccdc.c index 9d3459de04b2..80796eb0c53e 100644 --- a/drivers/media/video/omap3isp/ispccdc.c +++ b/drivers/media/video/omap3isp/ispccdc.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include "isp.h"