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 3.18-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-3.18 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 10:11:52 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 @@ -757,8 +757,8 @@ 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-3.18/video-arm-clcd-fix-dma-allocation-size.patch