diff mbox series

[5.12,345/363] drm/i915: Read C0DRB3/C1DRB3 as 16 bits again

Message ID 20210517140314.265585190@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman May 17, 2021, 2:03 p.m. UTC 
From: Ville Syrjälä <ville.syrjala@linux.intel.com>

commit 04d019961fd15de92874575536310243a0d4c5c5 upstream.

We've defined C0DRB3/C1DRB3 as 16 bit registers, so access them
as such.

Fixes: 1c8242c3a4b2 ("drm/i915: Use unchecked writes for setting up the fences")
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210421153401.13847-3-ville.syrjala@linux.intel.com
(cherry picked from commit f765a5b48c667bdada5e49d5e0f23f8c0687b21b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

--- a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
@@ -670,8 +670,8 @@  static void detect_bit_6_swizzle(struct
 		 * banks of memory are paired and unswizzled on the
 		 * uneven portion, so leave that as unknown.
 		 */
-		if (intel_uncore_read(uncore, C0DRB3) ==
-		    intel_uncore_read(uncore, C1DRB3)) {
+		if (intel_uncore_read16(uncore, C0DRB3) ==
+		    intel_uncore_read16(uncore, C1DRB3)) {
 			swizzle_x = I915_BIT_6_SWIZZLE_9_10;
 			swizzle_y = I915_BIT_6_SWIZZLE_9;
 		}