The patch below does not apply to the 3.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.
thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From c7c656226842679bcd9f39dc24441b4ff398a850 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <[email protected]> Date: Wed, 5 Mar 2014 13:05:45 +0200 Subject: [PATCH] drm/i915: Don't clobber CHICKEN_PIPESL_1 on BDW MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Misplaced parens cause us to totally clobber the CHICKEN_PIPESL_1 registers with 0xffffffff. Move the parens to the correct place to avoid this. In particular this caused bit 30 of said registers to be set, which caused the sprite CSC to produce incorrect results. Cc: [email protected] Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=72220 Signed-off-by: Ville Syrjälä <[email protected]> Reviewed-by: Damien Lespiau <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 8df1826a6015..2cc9de7899b1 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4839,8 +4839,8 @@ static void gen8_init_clock_gating(struct drm_device *dev) /* WaPsrDPRSUnmaskVBlankInSRD:bdw */ for_each_pipe(pipe) { I915_WRITE(CHICKEN_PIPESL_1(pipe), - I915_READ(CHICKEN_PIPESL_1(pipe) | - DPRS_MASK_VBLANK_SRD)); + I915_READ(CHICKEN_PIPESL_1(pipe)) | + DPRS_MASK_VBLANK_SRD); } /* Use Force Non-Coherent whenever executing a 3D context. This is a -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
