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path: root/drivers/gpu/drm/drm_fb_helper.c
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Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
-rw-r--r--drivers/gpu/drm/drm_fb_helper.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 5609e164805f..89cfd68ef400 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -399,7 +399,11 @@ static void drm_fb_helper_dirty_blit_real(struct drm_fb_helper *fb_helper,
unsigned int y;
for (y = clip->y1; y < clip->y2; y++) {
- memcpy(dst, src, len);
+ if (!fb_helper->dev->mode_config.fbdev_use_iomem)
+ memcpy(dst, src, len);
+ else
+ memcpy_toio((void __iomem *)dst, src, len);
+
src += fb->pitches[0];
dst += fb->pitches[0];
}