From: roel kluin <roel.kluin@gmail.com>
To: ben-linux@fluff.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] sm501: unsigned ptr cannot be negative
Date: Sat, 29 Nov 2008 06:49:20 -0500 [thread overview]
Message-ID: <49312C40.3080909@gmail.com> (raw)
unsigned ptr cannot be negative
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
index f94ae84..dcd9879 100644
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -159,6 +159,9 @@ static int sm501_alloc_mem(struct sm501fb_info *inf, struct sm501_mem *mem,
break;
case SM501_MEMF_PANEL:
+ if (size > inf->fbmem_len)
+ return -ENOMEM;
+
ptr = inf->fbmem_len - size;
fbi = inf->fb[HEAD_CRT];
@@ -172,9 +175,6 @@ static int sm501_alloc_mem(struct sm501fb_info *inf, struct sm501_mem *mem,
if (fbi && ptr < fbi->fix.smem_len)
return -ENOMEM;
- if (ptr < 0)
- return -ENOMEM;
-
break;
case SM501_MEMF_CRT:
next reply other threads:[~2008-11-29 11:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-29 11:49 roel kluin [this message]
2008-12-02 22:05 ` [PATCH] sm501: unsigned ptr cannot be negative Andrew Morton
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