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, 22 insertions, 4 deletions

diff --git a/drivers/media/video/bw-qcam.c b/drivers/media/video/bw-qcam.c
index 6e39e253ce5..ace4ff9ea02 100644
--- a/drivers/media/video/bw-qcam.c
+++ b/drivers/media/video/bw-qcam.c
@@ -495,7 +495,7 @@ static void qc_set(struct qcam_device *q)
 		val2 = (((q->port_mode & QC_MODE_MASK) == QC_BIDIR) ? 24 : 8) *
 		    q->transfer_scale;
 	}
-	val = (val + val2 - 1) / val2;
+	val = DIV_ROUND_UP(val, val2);
 	qc_command(q, 0x13);
 	qc_command(q, val);
 
@@ -651,7 +651,7 @@ static long qc_capture(struct qcam_device * q, char __user *buf, unsigned long l
 	transperline = q->width * q->bpp;
 	divisor = (((q->port_mode & QC_MODE_MASK) == QC_BIDIR) ? 24 : 8) *
 	    q->transfer_scale;
-	transperline = (transperline + divisor - 1) / divisor;
+	transperline = DIV_ROUND_UP(transperline, divisor);
 
 	for (i = 0, yield = yieldlines; i < linestotrans; i++)
 	{
@@ -894,10 +894,27 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
 	return len;
 }
 
+static int qcam_exclusive_open(struct inode *inode, struct file *file)
+{
+	struct video_device *dev = video_devdata(file);
+	struct qcam_device *qcam = (struct qcam_device *)dev;
+
+	return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0;
+}
+
+static int qcam_exclusive_release(struct inode *inode, struct file *file)
+{
+	struct video_device *dev = video_devdata(file);
+	struct qcam_device *qcam = (struct qcam_device *)dev;
+
+	clear_bit(0, &qcam->in_use);
+	return 0;
+}
+
 static const struct file_operations qcam_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = qcam_exclusive_open,
+	.release        = qcam_exclusive_release,
 	.ioctl          = qcam_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -909,6 +926,7 @@ static struct video_device qcam_template=
 {
 	.name		= "Connectix Quickcam",
 	.fops           = &qcam_fops,
+	.release 	= video_device_release_empty,
 };
 
 #define MAX_CAMS 4