diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/pci/bt8xx/bttv-risc.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/media/pci/bt8xx/bttv-risc.c b/drivers/media/pci/bt8xx/bttv-risc.c index 3859dde98be2..6a6be0b49f70 100644 --- a/drivers/media/pci/bt8xx/bttv-risc.c +++ b/drivers/media/pci/bt8xx/bttv-risc.c @@ -189,20 +189,21 @@ bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc, yoffset -= sg_dma_len(ysg); ysg = sg_next(ysg); } - while (uoffset && uoffset >= sg_dma_len(usg)) { - uoffset -= sg_dma_len(usg); - usg = sg_next(usg); - } - while (voffset && voffset >= sg_dma_len(vsg)) { - voffset -= sg_dma_len(vsg); - vsg = sg_next(vsg); - } /* calculate max number of bytes we can write */ ylen = todo; if (yoffset + ylen > sg_dma_len(ysg)) ylen = sg_dma_len(ysg) - yoffset; if (chroma) { + while (uoffset && uoffset >= sg_dma_len(usg)) { + uoffset -= sg_dma_len(usg); + usg = sg_next(usg); + } + while (voffset && voffset >= sg_dma_len(vsg)) { + voffset -= sg_dma_len(vsg); + vsg = sg_next(vsg); + } + if (uoffset + (ylen>>hshift) > sg_dma_len(usg)) ylen = (sg_dma_len(usg) - uoffset) << hshift; if (voffset + (ylen>>hshift) > sg_dma_len(vsg)) |