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path: root/drivers/media/video/bt8xx/bttv-risc.c
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Diffstat (limited to 'drivers/media/video/bt8xx/bttv-risc.c')
-rw-r--r--drivers/media/video/bt8xx/bttv-risc.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/media/video/bt8xx/bttv-risc.c b/drivers/media/video/bt8xx/bttv-risc.c
index 16323a5d68a..afcfe71e379 100644
--- a/drivers/media/video/bt8xx/bttv-risc.c
+++ b/drivers/media/video/bt8xx/bttv-risc.c
@@ -233,7 +233,7 @@ bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc,
233 const struct bttv_format *fmt, struct bttv_overlay *ov, 233 const struct bttv_format *fmt, struct bttv_overlay *ov,
234 int skip_even, int skip_odd) 234 int skip_even, int skip_odd)
235{ 235{
236 int instructions,rc,line,maxy,start,end,skip,nskips; 236 int dwords,rc,line,maxy,start,end,skip,nskips;
237 struct btcx_skiplist *skips; 237 struct btcx_skiplist *skips;
238 u32 *rp,ri,ra; 238 u32 *rp,ri,ra;
239 u32 addr; 239 u32 addr;
@@ -242,12 +242,12 @@ bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc,
242 if (NULL == (skips = kmalloc(sizeof(*skips) * ov->nclips,GFP_KERNEL))) 242 if (NULL == (skips = kmalloc(sizeof(*skips) * ov->nclips,GFP_KERNEL)))
243 return -ENOMEM; 243 return -ENOMEM;
244 244
245 /* estimate risc mem: worst case is (clip+1) * lines instructions 245 /* estimate risc mem: worst case is (1.5*clip+1) * lines instructions
246 + sync + jump (all 2 dwords) */ 246 + sync + jump (all 2 dwords) */
247 instructions = (ov->nclips + 1) * 247 dwords = (3 * ov->nclips + 2) *
248 ((skip_even || skip_odd) ? ov->w.height>>1 : ov->w.height); 248 ((skip_even || skip_odd) ? (ov->w.height+1)>>1 : ov->w.height);
249 instructions += 2; 249 dwords += 4;
250 if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*8)) < 0) { 250 if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,dwords*4)) < 0) {
251 kfree(skips); 251 kfree(skips);
252 return rc; 252 return rc;
253 } 253 }
@@ -276,8 +276,6 @@ bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc,
276 if (line > maxy) 276 if (line > maxy)
277 btcx_calc_skips(line, ov->w.width, &maxy, 277 btcx_calc_skips(line, ov->w.width, &maxy,
278 skips, &nskips, ov->clips, ov->nclips); 278 skips, &nskips, ov->clips, ov->nclips);
279 else
280 nskips = 0;
281 279
282 /* write out risc code */ 280 /* write out risc code */
283 for (start = 0, skip = 0; start < ov->w.width; start = end) { 281 for (start = 0, skip = 0; start < ov->w.width; start = end) {