linux-kernel - [PATCH] video: fbdev: uvesafb: Remove impossible code path in uvesafb_init

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Date:	Wed, 5 Mar 2014 23:56:19 +0800
From:	Wang YanQing <udknight@...il.com>
To:	tomi.valkeinen@...com
Cc:	plagnioj@...osoft.com, fengguang.wu@...el.com,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] video: fbdev: uvesafb: Remove impossible code path in
 uvesafb_init_info

Because uvesafb_vbe_init will fail when get zero avaiable modes,
and we have checked the return value of uvesafb_vbe_init_mode,
so it is impossible to pass NULL as mode into uvesafb_init_info.

[ This patch fix warning report by fengguang.wu@...el.com
  "drivers/video/fbdev/uvesafb.c:1509 uvesafb_init_info()
   error: we previously assumed 'mode' could be null" ]

Signed-off-by: Wang YanQing <udknight@...il.com>
---
 drivers/video/fbdev/uvesafb.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index 18352b2..509d452 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -1474,12 +1474,7 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
 	 *                 used video mode, i.e. the minimum amount of
 	 *                 memory we need.
 	 */
-	if (mode != NULL) {
-		size_vmode = info->var.yres * mode->bytes_per_scan_line;
-	} else {
-		size_vmode = info->var.yres * info->var.xres *
-			     ((info->var.bits_per_pixel + 7) >> 3);
-	}
+	size_vmode = info->var.yres * mode->bytes_per_scan_line;
 
 	/*
 	 *   size_total -- all video memory we have. Used for mtrr
-- 
1.8.3.4.8.g69490f3.dirty
--
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