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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-08-19 20:56:41 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-10-10 01:05:48 (GMT) |
| commit | 8beb058f1ecde7bc0554d18ce1baa18b5dfb02d3 (patch) | |
| tree | 0ac375d2d009baca2d39ffae97734d04b167872d /drivers/media/video | |
| parent | 25e3f8f40ecf61b87a4b6476ea6d00cb5b74628c (diff) | |
| download | linux-8beb058f1ecde7bc0554d18ce1baa18b5dfb02d3.tar.xz | |
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>
Diffstat (limited to 'drivers/media/video')
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-udma.c | 12 | ||||
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-yuv.c | 2 |
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 5592abb..7e503ad 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 2ae7556..1922c1d 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]); |