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Subject[PATCH 3.16 220/305] drm/ast: change resolution may cause screen blurred
3.16.63-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: "Y.C. Chen" <yc_chen@aspeedtech.com>

commit 1a37bd823891568f8721989aed0615835632d81a upstream.

The value of pitches is not correct while calling mode_set.
The issue we found so far on following system:
- Debian8 with XFCE Desktop
- Ubuntu with KDE Desktop
- SUSE15 with KDE Desktop

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Tested-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/gpu/drm/ast/ast_mode.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -527,6 +527,7 @@ static int ast_crtc_do_set_base(struct d
}
ast_bo_unreserve(bo);

+ ast_set_offset_reg(crtc);
ast_set_start_address_crt1(crtc, (u32)gpu_addr);

return 0;
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