Patch "drm/i915: Fix calculation of rotated x and y offsets for planar formats" has been added to the 4.9-stable tree

Patch "drm/i915: Fix calculation of rotated x and y offsets for planar formats" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/i915: Fix calculation of rotated x and y offsets for planar formats

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-i915-fix-calculation-of-rotated-x-and-y-offsets-for-planar-formats.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 3781bd6e7d64d5f5bea9fdee11ab9460a700c0e4 Mon Sep 17 00:00:00 2001
From: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Date: Fri, 20 Jan 2017 16:28:44 +0200
Subject: drm/i915: Fix calculation of rotated x and y offsets for planar formats
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>

commit 3781bd6e7d64d5f5bea9fdee11ab9460a700c0e4 upstream.

Parameters tile_size, tile_width and tile_height were passed in the
wrong order to _intel_adjust_tile_offset() when calculating the rotated
offsets.

This doesn't fix any user visible bug, since for packed formats new
and old offset are the same and the rotated offsets are within a tile
before they are fed to _intel_adjust_tile_offset(). In that case, the
offsets are unchanged. That is not true for planar formats, but those
are currently not supported.

Fixes: 66a2d927cb0e ("drm/i915: Make intel_adjust_tile_offset() work for linear buffers")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1484922525-6131-3-git-send-email-ander.conselvan.de.oliveira@intel.com
(cherry picked from commit 46a1bd289507dfcc428fb9daf65421ed6be6af8b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/i915/intel_display.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2587,8 +2587,9 @@ intel_fill_fb_info(struct drm_i915_priva
 			 * We only keep the x/y offsets, so push all of the
 			 * gtt offset into the x/y offsets.
 			 */
-			_intel_adjust_tile_offset(&x, &y, tile_size,
-						  tile_width, tile_height, pitch_tiles,
+			_intel_adjust_tile_offset(&x, &y,
+						  tile_width, tile_height,
+						  tile_size, pitch_tiles,
 						  gtt_offset_rotated * tile_size, 0);
 
 			gtt_offset_rotated += rot_info->plane[i].width * rot_info->plane[i].height;


Patches currently in stable-queue which might be from ander.conselvan.de.oliveira@intel.com are

queue-4.9/drm-i915-don-t-init-hpd-polling-for-vlv-and-chv-from-runtime_suspend.patch
queue-4.9/drm-i915-check-for-null-atomic-state-in-intel_crtc_disable_noatomic.patch
queue-4.9/drm-i915-don-t-leak-edid-in-intel_crt_detect_ddc.patch
queue-4.9/drm-i915-fix-calculation-of-rotated-x-and-y-offsets-for-planar-formats.patch