linux-kernel - [PATCH 3.16 064/328] udlfb: set line_length in dlfb_ops_set

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Message-ID: <lsq.1544392233.215423643@decadent.org.uk>
Date:   Sun, 09 Dec 2018 21:50:33 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Mikulas Patocka" <mpatocka@...hat.com>,
        "Bartlomiej Zolnierkiewicz" <b.zolnierkie@...sung.com>
Subject: [PATCH 3.16 064/328] udlfb: set line_length in dlfb_ops_set_par

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Mikulas Patocka <mpatocka@...hat.com>

commit 0ac319b7af1bb24a33365d0ec82a2f56a59b2a78 upstream.

Set the variable "line_length" in the function dlfb_ops_set_par. Without
this, we get garbage if we select different videomode with fbset.

Signed-off-by: Mikulas Patocka <mpatocka@...hat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/video/fbdev/udlfb.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -1073,6 +1073,7 @@ static int dlfb_ops_set_par(struct fb_in
 		return result;
 
 	dev->current_mode = fvs;
+	info->fix.line_length = info->var.xres * (info->var.bits_per_pixel / 8);
 
 	if (dev->fb_count == 0) {