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Diffstat (limited to 'drivers/video/cfbcopyarea.c')
-rw-r--r--drivers/video/cfbcopyarea.c36
1 files changed, 0 insertions, 36 deletions
diff --git a/drivers/video/cfbcopyarea.c b/drivers/video/cfbcopyarea.c
index 67711f7b11b1..cdc71572cf35 100644
--- a/drivers/video/cfbcopyarea.c
+++ b/drivers/video/cfbcopyarea.c
@@ -349,46 +349,10 @@ void cfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
349 unsigned long __iomem *dst = NULL, *src = NULL; 349 unsigned long __iomem *dst = NULL, *src = NULL;
350 int bits = BITS_PER_LONG, bytes = bits >> 3; 350 int bits = BITS_PER_LONG, bytes = bits >> 3;
351 int dst_idx = 0, src_idx = 0, rev_copy = 0; 351 int dst_idx = 0, src_idx = 0, rev_copy = 0;
352 int x2, y2, vxres, vyres;
353 352
354 if (p->state != FBINFO_STATE_RUNNING) 353 if (p->state != FBINFO_STATE_RUNNING)
355 return; 354 return;
356 355
357 /* We want rotation but lack hardware to do it for us. */
358 if (!p->fbops->fb_rotate && p->var.rotate) {
359 }
360
361 vxres = p->var.xres_virtual;
362 vyres = p->var.yres_virtual;
363
364 if (area->dx > vxres || area->sx > vxres ||
365 area->dy > vyres || area->sy > vyres)
366 return;
367
368 /* clip the destination
369 * We could use hardware clipping but on many cards you get around
370 * hardware clipping by writing to framebuffer directly.
371 */
372 x2 = area->dx + area->width;
373 y2 = area->dy + area->height;
374 dx = area->dx > 0 ? area->dx : 0;
375 dy = area->dy > 0 ? area->dy : 0;
376 x2 = x2 < vxres ? x2 : vxres;
377 y2 = y2 < vyres ? y2 : vyres;
378 width = x2 - dx;
379 height = y2 - dy;
380
381 if ((width==0) ||(height==0))
382 return;
383
384 /* update sx1,sy1 */
385 sx += (dx - area->dx);
386 sy += (dy - area->dy);
387
388 /* the source must be completely inside the virtual screen */
389 if (sx < 0 || sy < 0 || (sx + width) > vxres || (sy + height) > vyres)
390 return;
391
392 /* if the beginning of the target area might overlap with the end of 356 /* if the beginning of the target area might overlap with the end of
393 the source area, be have to copy the area reverse. */ 357 the source area, be have to copy the area reverse. */
394 if ((dy == sy && dx > sx) || (dy > sy)) { 358 if ((dy == sy && dx > sx) || (dy > sy)) {