This is a note to let you know that I've just added the patch titled
video: ARM CLCD: fix dma allocation size
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
video-arm-clcd-fix-dma-allocation-size.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sun Mar 18 16:55:33 CET 2018
From: Liam Beguin <lbeguin@xxxxxxxxxxx>
Date: Fri, 7 Apr 2017 17:03:24 +0200
Subject: video: ARM CLCD: fix dma allocation size
From: Liam Beguin <lbeguin@xxxxxxxxxxx>
[ Upstream commit 9a1c779e6b06855e41099caa6f15b3b584dfa88c ]
This patch forces the frambuffer size to be aligned on kernel pages.
During the board startup, the splash screed did appear;
the "ts_test" program or our application were not able to start.
The following error message was reported:
error: failed to map framebuffer device to memory.
LinuxFB: driver cannot connect
The issue was discovered, on the LPC32xx platform, during the migration
of the LCD definition from the board file to the device tree.
Signed-off-by: Liam Beguin <lbeguin@xxxxxxxxxxx>
Signed-off-by: Sylvain Lemieux <slemieux@xxxxxxxxxxx>
Cc: Vladimir Zapolskiy <vz@xxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/video/fbdev/amba-clcd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/video/fbdev/amba-clcd.c
+++ b/drivers/video/fbdev/amba-clcd.c
@@ -892,8 +892,8 @@ static int clcdfb_of_dma_setup(struct cl
if (err)
return err;
- framesize = fb->panel->mode.xres * fb->panel->mode.yres *
- fb->panel->bpp / 8;
+ framesize = PAGE_ALIGN(fb->panel->mode.xres * fb->panel->mode.yres *
+ fb->panel->bpp / 8);
fb->fb.screen_base = dma_alloc_coherent(&fb->dev->dev, framesize,
&dma, GFP_KERNEL);
if (!fb->fb.screen_base)
Patches currently in stable-queue which might be from lbeguin@xxxxxxxxxxx are
queue-4.9/video-arm-clcd-fix-dma-allocation-size.patch