Patch "video: ARM CLCD: fix dma allocation size" has been added to the 4.4-stable tree
From: <gregkh@linuxfoundation.org>
Date: 2018-03-19 09:13:40
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;a=summary
The filename of the patch is:
video-arm-clcd-fix-dma-allocation-size.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let [off-list ref] know about it.
From foo@baz Mon Mar 19 09:58:12 CET 2018
From: Liam Beguin <redacted> Date: Fri, 7 Apr 2017 17:03:24 +0200 Subject: video: ARM CLCD: fix dma allocation size From: Liam Beguin <redacted> [ 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 <redacted> Signed-off-by: Sylvain Lemieux <redacted> Cc: Vladimir Zapolskiy <vz@mleia.com> Cc: Russell King <linux@armlinux.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <redacted> Signed-off-by: Sasha Levin <redacted> 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