linux-kernel - [PATCH 5.4 09/38] fbdev: fbmem: Fix logo center image dx issue

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Message-Id: <20220711090539.003201795@linuxfoundation.org>
Date:   Mon, 11 Jul 2022 11:06:51 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Guiling Deng <greens9@....com>,
        Helge Deller <deller@....de>
Subject: [PATCH 5.4 09/38] fbdev: fbmem: Fix logo center image dx issue

From: Guiling Deng <greens9@....com>

commit 955f04766d4e6eb94bf3baa539e096808c74ebfb upstream.

Image.dx gets wrong value because of missing '()'.

If xres == logo->width and n == 1, image.dx = -16.

Signed-off-by: Guiling Deng <greens9@....com>
Fixes: 3d8b1933eb1c ("fbdev: fbmem: add config option to center the bootup logo")
Cc: stable@...r.kernel.org # v5.0+
Signed-off-by: Helge Deller <deller@....de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/video/fbdev/core/fbmem.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -512,7 +512,7 @@ static int fb_show_logo_line(struct fb_i
 
 		while (n && (n * (logo->width + 8) - 8 > xres))
 			--n;
-		image.dx = (xres - n * (logo->width + 8) - 8) / 2;
+		image.dx = (xres - (n * (logo->width + 8) - 8)) / 2;
 		image.dy = y ?: (yres - logo->height) / 2;
 	} else {
 		image.dx = 0;