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authorHans Verkuil <hverkuil@xs4all.nl>2007-08-19 17:56:41 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-10-09 22:05:48 -0300
commit8beb058f1ecde7bc0554d18ce1baa18b5dfb02d3 (patch)
tree0ac375d2d009baca2d39ffae97734d04b167872d
parent25e3f8f40ecf61b87a4b6476ea6d00cb5b74628c (diff)
V4L/DVB (6060): ivtv: fix IVTV_IOC_DMA_FRAME bug introduced by highmem bugfix
The return value of ivtv_udma_fill_sg_list() was changed by the highmem bugfix, but that return value was still used in ivtv-yuv.c. Revert to the old return value, but in addition return -1 in case of a memory allocation error. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
-rw-r--r--drivers/media/video/ivtv/ivtv-udma.c12
-rw-r--r--drivers/media/video/ivtv/ivtv-yuv.c2
2 files changed, 8 insertions, 6 deletions
diff --git a/drivers/media/video/ivtv/ivtv-udma.c b/drivers/media/video/ivtv/ivtv-udma.c
index 5592abbe14e..7e503adacea 100644
--- a/drivers/media/video/ivtv/ivtv-udma.c
+++ b/drivers/media/video/ivtv/ivtv-udma.c
@@ -40,6 +40,9 @@ int ivtv_udma_fill_sg_list (struct ivtv_user_dma *dma, struct ivtv_dma_page_info
int i, offset;
unsigned long flags;
+ if (map_offset < 0)
+ return map_offset;
+
offset = dma_page->offset;
/* Fill SG Array with new values */
@@ -55,7 +58,7 @@ int ivtv_udma_fill_sg_list (struct ivtv_user_dma *dma, struct ivtv_dma_page_info
if (dma->bouncemap[map_offset] == NULL)
dma->bouncemap[map_offset] = alloc_page(GFP_KERNEL);
if (dma->bouncemap[map_offset] == NULL)
- return -ENOMEM;
+ return -1;
local_irq_save(flags);
src = kmap_atomic(dma->map[map_offset], KM_BOUNCE_READ) + offset;
memcpy(page_address(dma->bouncemap[map_offset]) + offset, src, len);
@@ -69,7 +72,7 @@ int ivtv_udma_fill_sg_list (struct ivtv_user_dma *dma, struct ivtv_dma_page_info
offset = 0;
map_offset++;
}
- return 0;
+ return map_offset;
}
void ivtv_udma_fill_sg_array (struct ivtv_user_dma *dma, u32 buffer_offset, u32 buffer_offset_2, u32 split) {
@@ -138,13 +141,12 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
dma->page_count = user_dma.page_count;
/* Fill SG List with new values */
- err = ivtv_udma_fill_sg_list(dma, &user_dma, 0);
- if (err) {
+ if (ivtv_udma_fill_sg_list(dma, &user_dma, 0) < 0) {
for (i = 0; i < dma->page_count; i++) {
put_page(dma->map[i]);
}
dma->page_count = 0;
- return err;
+ return -ENOMEM;
}
/* Map SG List */
diff --git a/drivers/media/video/ivtv/ivtv-yuv.c b/drivers/media/video/ivtv/ivtv-yuv.c
index 2ae7556f5e6..1922c1da20d 100644
--- a/drivers/media/video/ivtv/ivtv-yuv.c
+++ b/drivers/media/video/ivtv/ivtv-yuv.c
@@ -83,7 +83,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
}
/* Fill & map SG List */
- if (ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0))) {
+ if (ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0)) < 0) {
IVTV_DEBUG_WARN("could not allocate bounce buffers for highmem userspace buffers\n");
for (i = 0; i < dma->page_count; i++) {
put_page(dma->map[i]);