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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
	David Francis <David.Francis@amd.com>,
	Roman Li <Roman.Li@amd.com>,
	amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	Alex Deucher <alexander.deucher@amd.com>,
	Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Subject: [PATCH AUTOSEL 5.2 022/171] drm/amd/display: Fill plane attrs only for valid pxl format
Date: Thu, 18 Jul 2019 23:54:13 -0400	[thread overview]
Message-ID: <20190719035643.14300-22-sashal@kernel.org> (raw)
In-Reply-To: <20190719035643.14300-1-sashal@kernel.org>

From: Roman Li <Roman.Li@amd.com>

[ Upstream commit 1894478ad1f8fd7366edc5cee49ee9caea0e3d52 ]

[Why]
In fill_plane_buffer_attributes() we calculate chroma/luma
assuming that the surface_pixel_format is always valid.
If it's not the case, there's a risk of divide by zero error.

[How]
Check if format valid before calculating pixel format attributes

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index fa268dd736f4..31530bfd002a 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2592,7 +2592,7 @@ fill_plane_buffer_attributes(struct amdgpu_device *adev,
 		address->type = PLN_ADDR_TYPE_GRAPHICS;
 		address->grph.addr.low_part = lower_32_bits(afb->address);
 		address->grph.addr.high_part = upper_32_bits(afb->address);
-	} else {
+	} else if (format < SURFACE_PIXEL_FORMAT_INVALID) {
 		uint64_t chroma_addr = afb->address + fb->offsets[1];
 
 		plane_size->video.luma_size.x = 0;
-- 
2.20.1

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  parent reply	other threads:[~2019-07-19  3:54 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190719035643.14300-1-sashal@kernel.org>
2019-07-19  3:54 ` [PATCH AUTOSEL 5.2 018/171] drm/amd/display: Fill prescale_params->scale for RGB565 Sasha Levin
2019-07-19  3:54 ` Sasha Levin [this message]
2019-07-19  3:54 ` [PATCH AUTOSEL 5.2 023/171] drm/amdgpu: Reserve shared fence for eviction fence Sasha Levin
2019-07-19  3:54 ` [PATCH AUTOSEL 5.2 036/171] drm/amd/display: CS_TFM_1D only applied post EOTF Sasha Levin
     [not found] ` <20190719035643.14300-1-sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 019/171] drm/amd/display: fix multi display seamless boot case Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 021/171] drm/amd/display: Disable cursor when offscreen in negative direction Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 025/171] drm/amdgpu/sriov: Need to initialize the HDP_NONSURFACE_BAStE Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 026/171] drm/amd/display: Disable ABM before destroy ABM struct Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 027/171] drm/amdkfd: Fix a potential memory leak Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 028/171] drm/amdkfd: Fix sdma queue map issue Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 035/171] drm/amd/display: Reset planes for color management changes Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 037/171] drm/amd/display: Increase Backlight Gain Step Size Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 052/171] drm/amd/display: Always allocate initial connector state state Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 053/171] drm/amd/display: Update link rate from DPCD 10 Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 055/171] drm/amd/display: set link->dongle_max_pix_clk to 0 on a disconnect Sasha Levin
2019-07-19  3:54   ` [PATCH AUTOSEL 5.2 057/171] drm/amd/display: fix compilation error Sasha Levin

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