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authorAntonino A. Daplas <adaplas@gmail.com>2007-07-17 04:05:39 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 10:23:12 -0700
commita66ad56eb2c9644717da4d7f05f971d6786145e3 (patch)
treef4cb903d8f7174c727d0b4e64331cb9b1f1a65f8
parent02c2c209c26ca452b2e688cdb0cb6bb4bc7cdf7f (diff)
downloadop-kernel-dev-a66ad56eb2c9644717da4d7f05f971d6786145e3.zip
op-kernel-dev-a66ad56eb2c9644717da4d7f05f971d6786145e3.tar.gz
pvr2fb: fix pseudo_palette array overrun and typecast
- the pseudo_palette has only 16 elements. Do not write if regno (the array index) is more than 15. - if using generic drawing libraries, the typecast of pseudo_palette is always u32 * Signed-off-by: Antonino Daplas <adaplas@gmail.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/video/pvr2fb.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/video/pvr2fb.c b/drivers/video/pvr2fb.c
index 2ba959a..0f88c30 100644
--- a/drivers/video/pvr2fb.c
+++ b/drivers/video/pvr2fb.c
@@ -333,24 +333,25 @@ static int pvr2fb_setcolreg(unsigned int regno, unsigned int red,
((blue & 0xf800) >> 11);
pvr2fb_set_pal_entry(par, regno, tmp);
- ((u16*)(info->pseudo_palette))[regno] = tmp;
break;
case 24: /* RGB 888 */
red >>= 8; green >>= 8; blue >>= 8;
- ((u32*)(info->pseudo_palette))[regno] = (red << 16) | (green << 8) | blue;
+ tmp = (red << 16) | (green << 8) | blue;
break;
case 32: /* ARGB 8888 */
red >>= 8; green >>= 8; blue >>= 8;
tmp = (transp << 24) | (red << 16) | (green << 8) | blue;
pvr2fb_set_pal_entry(par, regno, tmp);
- ((u32*)(info->pseudo_palette))[regno] = tmp;
break;
default:
pr_debug("Invalid bit depth %d?!?\n", info->var.bits_per_pixel);
return 1;
}
+ if (regno < 16)
+ ((u32*)(info->pseudo_palette))[regno] = tmp;
+
return 0;
}
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