Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (313 commits)
  V4L/DVB (9186): Added support for Prof 7300 DVB-S/S2 cards
  V4L/DVB (9185): S2API: Ensure we have a reasonable ROLLOFF default
  V4L/DVB (9184): cx24116: Change the default SNR units back to percentage by default.
  V4L/DVB (9183): S2API: Return error of the caller provides 0 commands.
  V4L/DVB (9182): S2API: Added support for DTV_HIERARCHY
  V4L/DVB (9181): S2API: Add support fot DTV_GUARD_INTERVAL and DTV_TRANSMISSION_MODE
  V4L/DVB (9180): S2API: Added support for DTV_CODE_RATE_HP/LP
  V4L/DVB (9179): S2API: frontend.h cleanup
  V4L/DVB (9178): cx24116: Add module parameter to return SNR as ESNO.
  V4L/DVB (9177): S2API: Change _8PSK / _16APSK to PSK_8 and APSK_16
  V4L/DVB (9176): Add support for DvbWorld USB cards with STV0288 demodulator.
  V4L/DVB (9175): Remove NULL pointer in stb6000 driver.
  V4L/DVB (9174): Allow custom inittab for ST STV0288 demodulator.
  V4L/DVB (9173): S2API: Remove the hardcoded command limit during validation
  V4L/DVB (9172): S2API: Bugfix related to DVB-S / DVB-S2 tuning for the legacy API.
  V4L/DVB (9171): S2API: Stop an OOPS if illegal commands are dumped in S2API.
  V4L/DVB (9170): cx24116: Sanity checking to data input via S2API to the cx24116 demod.
  V4L/DVB (9169): uvcvideo: Support two new Bison Electronics webcams.
  V4L/DVB (9168): Add support for MSI TV@nywhere Plus remote
  V4L/DVB: v4l2-dev: remove duplicated #include
  ...

1 files changed, 12 insertions, 3 deletions

diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c
index ef4d56ea002..be45955dff6 100644
--- a/drivers/media/video/cx88/cx88-video.c
+++ b/drivers/media/video/cx88/cx88-video.c
@@ -773,6 +773,7 @@ static int video_open(struct inode *inode, struct file *file)
 	enum v4l2_buf_type type = 0;
 	int radio = 0;
 
+	lock_kernel();
 	list_for_each_entry(h, &cx8800_devlist, devlist) {
 		if (h->video_dev->minor == minor) {
 			dev  = h;
@@ -788,8 +789,10 @@ static int video_open(struct inode *inode, struct file *file)
 			dev   = h;
 		}
 	}
-	if (NULL == dev)
+	if (NULL == dev) {
+		unlock_kernel();
 		return -ENODEV;
+	}
 
 	core = dev->core;
 
@@ -798,8 +801,10 @@ static int video_open(struct inode *inode, struct file *file)
 
 	/* allocate + initialize per filehandle data */
 	fh = kzalloc(sizeof(*fh),GFP_KERNEL);
-	if (NULL == fh)
+	if (NULL == fh) {
+		unlock_kernel();
 		return -ENOMEM;
+	}
 	file->private_data = fh;
 	fh->dev      = dev;
 	fh->radio    = radio;
@@ -832,6 +837,9 @@ static int video_open(struct inode *inode, struct file *file)
 		cx88_set_stereo(core,V4L2_TUNER_MODE_STEREO,1);
 		cx88_call_i2c_clients(core,AUDC_SET_RADIO,NULL);
 	}
+	unlock_kernel();
+
+	atomic_inc(&core->users);
 
 	return 0;
 }
@@ -920,7 +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;
 }