From: David Herrmann <dh.herrmann@gmail.com>
Date: Mon, 20 Jan 2014 18:54:18 +0000 (+0100)
Subject: drm/udl: fix Bpp calculation in dumb_create()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2b932d8ef009f37d397c211b1dc5d0b056f6ef64;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

drm/udl: fix Bpp calculation in dumb_create()

Probably a typo.. we obviously need "(bpp + 7) / 8" instead of
"(bpp + 1) / 8". Unlikely to be hit in any sane code, but lets be safe.
Use DIV_ROUND_UP() to avoid the problem entirely and make the core more
readable.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
---

diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c
index 8d67b943ac05..be4fcd0f0e0f 100644
--- a/drivers/gpu/drm/udl/udl_gem.c
+++ b/drivers/gpu/drm/udl/udl_gem.c
@@ -60,7 +60,7 @@ int udl_dumb_create(struct drm_file *file,
 		    struct drm_device *dev,
 		    struct drm_mode_create_dumb *args)
 {
-	args->pitch = args->width * ((args->bpp + 1) / 8);
+	args->pitch = args->width * DIV_ROUND_UP(args->bpp, 8);
 	args->size = args->pitch * args->height;
 	return udl_gem_create(file, dev,
 			      args->size, &args->handle);