Patch "video: ARM CLCD: fix dma allocation size" has been added to the 4.9-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]