[PATCH 6/6] drm/exynos: do not copy adjusted mode into mode during crtc mode_set

[Gustavo Padovan]

From: Daniel Kurtz <djkurtz at chromium.org>

The 'mode' is the modeline information which specifies the ideal mode
requested by the mode set initiator (usually userspace).
The 'adjusted_mode' is the actual hardware mode after all the crtcs
and encoders have had a chance to "fix it up".

The adjusted_mode starts as a duplicate of the mode in
drm_crtc_helper_set_mode(), and gets modified as required.  There is no
reason to touch the original requested mode.

In fact, doing so will cause us to think a new mode is being requested
whenever userspace tries to establish a new framebuffer with
drmModeSetCrtc(), since userspace will still be using the ideal mode, but
the crtc will be incorrectly comparing it against the adjusted_mode.

Signed-off-by: Daniel Kurtz <djkurtz at chromium.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
---
 drivers/gpu/drm/exynos/exynos_drm_crtc.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 5cd6c1a..7fd6426 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -91,12 +91,6 @@ exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
 	unsigned int crtc_h;
 	int ret;
 
-	/*
-	 * copy the mode data adjusted by mode_fixup() into crtc->mode
-	 * so that hardware can be seet to proper mode.
-	 */
-	memcpy(&crtc->mode, adjusted_mode, sizeof(*adjusted_mode));
-
 	ret = exynos_check_plane(crtc->primary, fb);
 	if (ret < 0)
 		return ret;
-- 
1.9.3