[media] saa7164: buffer crc checks and ensure we use the memcpy func
Buffer crc checks and ensure we use the correct PCIe IO memcpy func
Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/saa7164/saa7164-buffer.c b/drivers/media/video/saa7164/saa7164-buffer.c
index 0760891..b75157d 100644
--- a/drivers/media/video/saa7164/saa7164-buffer.c
+++ b/drivers/media/video/saa7164/saa7164-buffer.c
@@ -113,6 +113,7 @@
buf->flags = SAA7164_BUFFER_FREE;
buf->pos = 0;
buf->actual_size = params->pitch * params->numberoflines;
+ buf->crc = 0;
/* TODO: arg len is being ignored */
buf->pci_size = SAA7164_PT_ENTRIES * 0x1000;
buf->pt_size = (SAA7164_PT_ENTRIES * sizeof(u64)) + 0x1000;
@@ -129,8 +130,9 @@
goto fail2;
/* init the buffers to a known pattern, easier during debugging */
- memset(buf->cpu, 0xff, buf->pci_size);
- memset(buf->pt_cpu, 0xff, buf->pt_size);
+ memset_io(buf->cpu, 0xff, buf->pci_size);
+ buf->crc = crc32(0, buf->cpu, buf->actual_size);
+ memset_io(buf->pt_cpu, 0xff, buf->pt_size);
dprintk(DBGLVL_BUF, "%s() allocated buffer @ 0x%p\n",
__func__, buf);
@@ -296,6 +298,7 @@
buf->actual_size = len;
buf->pos = 0;
+ buf->crc = 0;
dprintk(DBGLVL_BUF, "%s() allocated user buffer @ 0x%p\n",
__func__, buf);