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 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: video-arm-clcd-fix-dma-allocation-size.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Mon Mar 19 09:58:12 CET 2018

From: Liam Beguin lbeguin@tycoint.com Date: Fri, 7 Apr 2017 17:03:24 +0200 Subject: video: ARM CLCD: fix dma allocation size

From: Liam Beguin lbeguin@tycoint.com

[ 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@tycoint.com Signed-off-by: Sylvain Lemieux slemieux@tycoint.com Cc: Vladimir Zapolskiy vz@mleia.com Cc: Russell King linux@armlinux.org.uk Signed-off-by: Bartlomiej Zolnierkiewicz b.zolnierkie@samsung.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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 @@ -759,8 +759,8 @@ 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@tycoint.com are

queue-4.4/video-arm-clcd-fix-dma-allocation-size.patch