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authorThierry <thierry.merle@free.fr>2006-12-04 08:31:17 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-12-10 09:05:46 -0200
commit5f7fb877be14da92803f0b5b60955e071ebe2d58 (patch)
tree31f2201908f778d5d02ffb798bfa37346efaf108 /drivers/media/video/usbvision/usbvision.h
parentf2242ee5474f46d87a45cd4e214b5c3aa02ff293 (diff)
V4L/DVB (4928): Usbvision_v4l2 robustness on disconnect
This patch corrects 2 bugs (causes kernel oops) that occur when unplugging the peripheral whereas nobody has opened it yet : - do not call usbvision_stop_isoc if usbvision_init_isoc has not been called - do not call wakeup_interruptible on waitqueues that did not have been initialized with init_waitqueue_head Signed-off-by: Thierry MERLE <thierry.merle@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/usbvision/usbvision.h')
-rw-r--r--drivers/media/video/usbvision/usbvision.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/media/video/usbvision/usbvision.h b/drivers/media/video/usbvision/usbvision.h
index 870c0cc81d84..ef83a5c4d2fd 100644
--- a/drivers/media/video/usbvision/usbvision.h
+++ b/drivers/media/video/usbvision/usbvision.h
@@ -227,9 +227,10 @@ enum FrameState {
/* stream states */
enum StreamState {
- Stream_Off,
- Stream_Interrupt,
- Stream_On,
+ Stream_Off, /* Driver streaming is completely OFF */
+ Stream_Idle, /* Driver streaming is ready to be put ON by the application */
+ Stream_Interrupt, /* Driver streaming must be interrupted */
+ Stream_On, /* Driver streaming is put ON by the application */
};
enum IsocState {