aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/pci/tw68/tw68-video.c11
1 files changed, 1 insertions, 10 deletions
diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c
index 66fae2345fdd..498ead9a956d 100644
--- a/drivers/media/pci/tw68/tw68-video.c
+++ b/drivers/media/pci/tw68/tw68-video.c
@@ -361,22 +361,13 @@ int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf)
/* ------------------------------------------------------------------ */
-/* nr of (tw68-)pages for the given buffer size */
-static int tw68_buffer_pages(int size)
-{
- size = PAGE_ALIGN(size);
- size += PAGE_SIZE; /* for non-page-aligned buffers */
- size /= 4096;
- return size;
-}
-
/* calc max # of buffers from size (must not exceed the 4MB virtual
* address space per DMA channel) */
static int tw68_buffer_count(unsigned int size, unsigned int count)
{
unsigned int maxcount;
- maxcount = 1024 / tw68_buffer_pages(size);
+ maxcount = (4 * 1024 * 1024) / roundup(size, PAGE_SIZE);
if (count > maxcount)
count = maxcount;
return count;

Privacy Policy