From 3e01084519a678b410df247581a51eeb1bbf11d5 Mon Sep 17 00:00:00 2001 From: Darron Broad Date: Thu, 25 Sep 2008 16:51:11 -0300 Subject: [PATCH] V4L/DVB (9069): cx88: Bugfix: all client disconnects put the frontend to sleep. From the author: "This fixes the problem where previously all client disconnects put the analogue frontend into standby. In the following example, the first command is succesfully watching TV but the second command which returns EBUSY detunes the receiver by entering it into the standby state. tvtime -d /dev/video0 & cat /dev/video0 " Signed-off-by: Steven Toth Signed-off-by: Darron Broad Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx88/cx88-video.c | 5 ++++- drivers/media/video/cx88/cx88.h | 1 + 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c index 61e03d4703f6..be45955dff68 100644 --- a/drivers/media/video/cx88/cx88-video.c +++ b/drivers/media/video/cx88/cx88-video.c @@ -839,6 +839,8 @@ static int video_open(struct inode *inode, struct file *file) } unlock_kernel(); + atomic_inc(&core->users); + return 0; } @@ -926,7 +928,8 @@ static int video_release(struct inode *inode, struct file *file) file->private_data = NULL; kfree(fh); - cx88_call_i2c_clients (dev->core, TUNER_SET_STANDBY, NULL); + if(atomic_dec_and_test(&dev->core->users)) + cx88_call_i2c_clients (dev->core, TUNER_SET_STANDBY, NULL); return 0; } diff --git a/drivers/media/video/cx88/cx88.h b/drivers/media/video/cx88/cx88.h index 6420fb7615b1..dce7d36edb42 100644 --- a/drivers/media/video/cx88/cx88.h +++ b/drivers/media/video/cx88/cx88.h @@ -349,6 +349,7 @@ struct cx88_core { struct mutex lock; /* various v4l controls */ u32 freq; + atomic_t users; /* cx88-video needs to access cx8802 for hybrid tuner pll access. */ struct cx8802_dev *dvbdev; -- 2.20.1