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

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 <[email protected]> know about it.

From: Liam Beguin <[email protected]>
Date: Fri, 7 Apr 2017 17:03:24 +0200
Subject: video: ARM CLCD: fix dma allocation size

From: Liam Beguin <[email protected]>

[ 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.

---
 drivers/video/fbdev/amba-clcd.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -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 [email protected] are

queue-4.9/video-arm-clcd-fix-dma-allocation-size.patch