From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:38886 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727498AbeLRQlZ (ORCPT ); Tue, 18 Dec 2018 11:41:25 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tina Zhang , Zhenyu Wang Subject: [PATCH 4.19 36/44] drm/i915/gvt: Fix tiled memory decoding bug on BDW Date: Tue, 18 Dec 2018 17:39:48 +0100 Message-Id: <20181218163931.674655690@linuxfoundation.org> In-Reply-To: <20181218163927.119623235@linuxfoundation.org> References: <20181218163927.119623235@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tina Zhang commit a40fa231bb64b33e2cd54cf8ef44a9f89875fa11 upstream. Commit b244ffa15c8b ("drm/i915/gvt: Fix drm_format_mod value for vGPU plane") introduced a regression issue to the tiled memory decoding on BDW. This patch can fix this issue. Here is the issue detail: https://github.com/intel/gvt-linux/issues/61 v1->v2: - Refine the commit message. (Zhenyu) Fixes: b244ffa15c8b("drm/i915/gvt: Fix drm_format_mod value for vGPU plane") Signed-off-by: Tina Zhang Cc: stable@vger.kernel.org # v4.19+ Cc: Zhenyu Wang Signed-off-by: Zhenyu Wang Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/gvt/fb_decoder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/gvt/fb_decoder.c +++ b/drivers/gpu/drm/i915/gvt/fb_decoder.c @@ -235,7 +235,7 @@ int intel_vgpu_decode_primary_plane(stru plane->bpp = skl_pixel_formats[fmt].bpp; plane->drm_format = skl_pixel_formats[fmt].drm_format; } else { - plane->tiled = !!(val & DISPPLANE_TILED); + plane->tiled = val & DISPPLANE_TILED; fmt = bdw_format_to_drm(val & DISPPLANE_PIXFORMAT_MASK); plane->bpp = bdw_pixel_formats[fmt].bpp; plane->drm_format = bdw_pixel_formats[fmt].drm_format;