Patch "drm/amdgpu: fix firmware info version checks" has been added to the 4.4-stable tree

Patch "drm/amdgpu: fix firmware info version checks" has been added to the 4.4-stable tree

[gregkh]

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

    drm/amdgpu: fix firmware info version checks

to the 4.4-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-amdgpu-fix-firmware-info-version-checks.patch
and it can be found in the queue-4.4 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 a8a04c994d41a489eb0f2899893209e04e030153 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 27 Jul 2016 15:31:59 -0400
Subject: drm/amdgpu: fix firmware info version checks

From: Alex Deucher <alexander.deucher@amd.com>

commit a8a04c994d41a489eb0f2899893209e04e030153 upstream.

Some of the checks didn't handle frev 2 tables properly.
amdgpu doesn't support any tables pre-frev 2, so drop
the checks.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c |   25 ++++++++-----------------
 1 file changed, 8 insertions(+), 17 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -566,28 +566,19 @@ int amdgpu_atombios_get_clock_info(struc
 		    le16_to_cpu(firmware_info->info.usReferenceClock);
 		ppll->reference_div = 0;
 
-		if (crev < 2)
-			ppll->pll_out_min =
-				le16_to_cpu(firmware_info->info.usMinPixelClockPLL_Output);
-		else
-			ppll->pll_out_min =
-				le32_to_cpu(firmware_info->info_12.ulMinPixelClockPLL_Output);
+		ppll->pll_out_min =
+			le32_to_cpu(firmware_info->info_12.ulMinPixelClockPLL_Output);
 		ppll->pll_out_max =
 		    le32_to_cpu(firmware_info->info.ulMaxPixelClockPLL_Output);
 
-		if (crev >= 4) {
-			ppll->lcd_pll_out_min =
-				le16_to_cpu(firmware_info->info_14.usLcdMinPixelClockPLL_Output) * 100;
-			if (ppll->lcd_pll_out_min == 0)
-				ppll->lcd_pll_out_min = ppll->pll_out_min;
-			ppll->lcd_pll_out_max =
-				le16_to_cpu(firmware_info->info_14.usLcdMaxPixelClockPLL_Output) * 100;
-			if (ppll->lcd_pll_out_max == 0)
-				ppll->lcd_pll_out_max = ppll->pll_out_max;
-		} else {
+		ppll->lcd_pll_out_min =
+			le16_to_cpu(firmware_info->info_14.usLcdMinPixelClockPLL_Output) * 100;
+		if (ppll->lcd_pll_out_min == 0)
 			ppll->lcd_pll_out_min = ppll->pll_out_min;
+		ppll->lcd_pll_out_max =
+			le16_to_cpu(firmware_info->info_14.usLcdMaxPixelClockPLL_Output) * 100;
+		if (ppll->lcd_pll_out_max == 0)
 			ppll->lcd_pll_out_max = ppll->pll_out_max;
-		}
 
 		if (ppll->pll_out_min == 0)
 			ppll->pll_out_min = 64800;


Patches currently in stable-queue which might be from alexander.deucher@amd.com are

queue-4.4/drm-amdgpu-support-backlight-control-for-uniphy3.patch
queue-4.4/drm-amdgpu-fix-firmware-info-version-checks.patch
queue-4.4/drm-radeon-add-a-delay-after-atpx-dgpu-power-off.patch
queue-4.4/drm-amdgpu-add-a-delay-after-atpx-dgpu-power-off.patch
queue-4.4/drm-amdgpu-poll-for-both-connect-disconnect-on-analog-connectors.patch
queue-4.4/drm-radeon-support-backlight-control-for-uniphy3.patch
queue-4.4/drm-radeon-poll-for-both-connect-disconnect-on-analog-connectors.patch
queue-4.4/drm-radeon-fix-firmware-info-version-checks.patch
queue-4.4/drm-amdgpu-gmc7-add-missing-mullins-case.patch
queue-4.4/drm-amdgpu-disable-rpm-helpers-while-reprobing-connectors-on-resume.patch