Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (255 commits)
  [media] radio-aimslab.c: Fix gcc 4.5+ bug
  [media] cx25821: Fix compilation breakage due to BKL dependency
  [media] v4l2-compat-ioctl32: fix compile warning
  [media] zoran: fix compiler warning
  [media] tda18218: fix compile warning
  [media] ngene: fix compile warning
  [media] DVB: IR support for TechnoTrend CT-3650
  [media] cx23885, cimax2.c: Fix case of two CAM insertion irq
  [media] ir-nec-decoder: fix repeat key issue
  [media] staging: se401 depends on USB
  [media] staging: usbvideo/vicam depends on USB
  [media] soc_camera: Add the ability to bind regulators to soc_camedra devices
  [media] V4L2: Add a v4l2-subdev (soc-camera) driver for OmniVision OV2640 sensor
  [media] v4l: soc-camera: switch to .unlocked_ioctl
  [media] v4l: ov772x: simplify pointer dereference
  [media] ov9640: fix OmniVision OV9640 sensor driver's priv data retrieving
  [media] ov9640: use macro to request OmniVision OV9640 sensor private data
  [media] ivtv-i2c: Fix two warnings
  [media] staging/lirc: Update lirc TODO files
  [media] cx88: Remove the obsolete i2c_adapter.id field
  ...

1 files changed, 1 insertions, 33 deletions

diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c
index 20f227ee2b3e..ddb8f4b46c03 100644
--- a/drivers/media/video/videobuf-dma-sg.c
+++ b/drivers/media/video/videobuf-dma-sg.c
@@ -69,10 +69,9 @@ static struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt,
 	struct page *pg;
 	int i;
 
-	sglist = vmalloc(nr_pages * sizeof(*sglist));
+	sglist = vzalloc(nr_pages * sizeof(*sglist));
 	if (NULL == sglist)
 		return NULL;
-	memset(sglist, 0, nr_pages * sizeof(*sglist));
 	sg_init_table(sglist, nr_pages);
 	for (i = 0; i < nr_pages; i++, virt += PAGE_SIZE) {
 		pg = vmalloc_to_page(virt);
@@ -544,14 +543,6 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
 
 	retval = -EINVAL;
 
-	/* This function maintains backwards compatibility with V4L1 and will
-	 * map more than one buffer if the vma length is equal to the combined
-	 * size of multiple buffers than it will map them together.  See
-	 * VIDIOCGMBUF in the v4l spec
-	 *
-	 * TODO: Allow drivers to specify if they support this mode
-	 */
-
 	BUG_ON(!mem);
 	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
 
@@ -571,29 +562,6 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
 	}
 
 	last = first;
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
-	if (size != (vma->vm_end - vma->vm_start)) {
-		/* look for last buffer to map */
-		for (last = first + 1; last < VIDEO_MAX_FRAME; last++) {
-			if (NULL == q->bufs[last])
-				continue;
-			if (V4L2_MEMORY_MMAP != q->bufs[last]->memory)
-				continue;
-			if (q->bufs[last]->map) {
-				retval = -EBUSY;
-				goto done;
-			}
-			size += PAGE_ALIGN(q->bufs[last]->bsize);
-			if (size == (vma->vm_end - vma->vm_start))
-				break;
-		}
-		if (VIDEO_MAX_FRAME == last) {
-			dprintk(1, "mmap app bug: size invalid [size=0x%lx]\n",
-					(vma->vm_end - vma->vm_start));
-			goto done;
-		}
-	}
-#endif
 
 	/* create mapping + update buffer list */
 	retval = -ENOMEM;