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 --- drivers/video/fbdev/amba-clcd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c index ec2671d98abc..89880b70cc28 100644 --- 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 clcd_fb *fb) 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)