This is a note to let you know that I've just added the patch titled
drm/amdgpu/si: fix crash on headless asics
to the 4.9-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-si-fix-crash-on-headless-asics.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 57bcd0a6364cd4eaa362d7ff1777e88ddf501602 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Fri, 27 Jan 2017 10:31:52 -0500
Subject: drm/amdgpu/si: fix crash on headless asics
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From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 57bcd0a6364cd4eaa362d7ff1777e88ddf501602 upstream.
Missing check for crtcs present.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=193341
https://bugs.freedesktop.org/show_bug.cgi?id=99387
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -227,6 +227,9 @@ static void gmc_v6_0_mc_program(struct a
}
WREG32(HDP_REG_COHERENCY_FLUSH_CNTL, 0);
+ if (adev->mode_info.num_crtc)
+ amdgpu_display_set_vga_render_state(adev, false);
+
gmc_v6_0_mc_stop(adev, &save);
if (gmc_v6_0_wait_for_idle((void *)adev)) {
@@ -256,7 +259,6 @@ static void gmc_v6_0_mc_program(struct a
dev_warn(adev->dev, "Wait for MC idle timedout !\n");
}
gmc_v6_0_mc_resume(adev, &save);
- amdgpu_display_set_vga_render_state(adev, false);
}
static int gmc_v6_0_mc_init(struct amdgpu_device *adev)
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-4.9/drm-amdgpu-si-fix-crash-on-headless-asics.patch
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