We've failed to properly clear out the flags when converting a dtd to
a drm mode. For more paranoia just memset the entire structure (and
drop the now redundant clears).
Also since
commit 135c81b8c3c9a70d7b55758c9c2a247a4abb7b64
Author: Daniel Vetter <daniel.vetter@xxxxxxxx>
Date: Sun Jul 21 21:37:09 2013 +0200
drm/i915: clean up crtc timings computation
we don't update the crtc timings any more properly, so do that again.
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reported-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
---
drivers/gpu/drm/i915/intel_sdvo.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 5033c74..d4a046d 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -788,6 +788,8 @@ static void intel_sdvo_get_dtd_from_mode(struct intel_sdvo_dtd *dtd,
uint16_t h_sync_offset, v_sync_offset;
int mode_clock;
+ memset(dtd, 0, sizeof(*dtd));
+
width = mode->hdisplay;
height = mode->vdisplay;
@@ -830,14 +832,14 @@ static void intel_sdvo_get_dtd_from_mode(struct intel_sdvo_dtd *dtd,
if (mode->flags & DRM_MODE_FLAG_PVSYNC)
dtd->part2.dtd_flags |= DTD_FLAG_VSYNC_POSITIVE;
- dtd->part2.sdvo_flags = 0;
dtd->part2.v_sync_off_high = v_sync_offset & 0xc0;
- dtd->part2.reserved = 0;
}
static void intel_sdvo_get_mode_from_dtd(struct drm_display_mode * mode,
const struct intel_sdvo_dtd *dtd)
{
+ memset(mode, 0, sizeof(*mode));
+
mode->hdisplay = dtd->part1.h_active;
mode->hdisplay += ((dtd->part1.h_high >> 4) & 0x0f) << 8;
mode->hsync_start = mode->hdisplay + dtd->part2.h_sync_off;
@@ -872,6 +874,8 @@ static void intel_sdvo_get_mode_from_dtd(struct drm_display_mode * mode,
mode->flags |= DRM_MODE_FLAG_PVSYNC;
else
mode->flags |= DRM_MODE_FLAG_NVSYNC;
+
+ drm_mode_set_crtcinfo(mode);
}
static bool intel_sdvo_check_supp_encode(struct intel_sdvo *intel_sdvo)
--
1.8.4.rc3
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