From: <gregkh@linuxfoundation.org>
To: greg@chown.ath.cx, alexander.deucher@amd.com,
christian.koenig@amd.com, gregkh@linuxfoundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "drm/radeon: fix HDP flushing" has been added to the 4.1-stable tree
Date: Thu, 30 Jul 2015 12:12:43 -0700 [thread overview]
Message-ID: <143828356323388@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
drm/radeon: fix HDP flushing
to the 4.1-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-radeon-fix-hdp-flushing.patch
and it can be found in the queue-4.1 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 54e03986133468e02cb01b76215e4d53a9cf6380 Mon Sep 17 00:00:00 2001
From: Grigori Goronzy <greg@chown.ath.cx>
Date: Fri, 3 Jul 2015 01:54:11 +0200
Subject: drm/radeon: fix HDP flushing
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From: Grigori Goronzy <greg@chown.ath.cx>
commit 54e03986133468e02cb01b76215e4d53a9cf6380 upstream.
This was regressed by commit 39e7f6f8, although I don't know of any
actual issues caused by it.
The storage domain is read without TTM locking now, but the lock
never helped to prevent any races.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Grigori Goronzy <greg@chown.ath.cx>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/radeon/radeon_gem.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -471,6 +471,7 @@ int radeon_gem_wait_idle_ioctl(struct dr
r = ret;
/* Flush HDP cache via MMIO if necessary */
+ cur_placement = ACCESS_ONCE(robj->tbo.mem.mem_type);
if (rdev->asic->mmio_hdp_flush &&
radeon_mem_type_to_domain(cur_placement) == RADEON_GEM_DOMAIN_VRAM)
robj->rdev->asic->mmio_hdp_flush(rdev);
Patches currently in stable-queue which might be from greg@chown.ath.cx are
queue-4.1/drm-radeon-fix-hdp-flushing.patch
queue-4.1/drm-radeon-clean-up-reference-counting-and-pinning-of-the-cursor-bos.patch
queue-4.1/drm-radeon-unpin-cursor-bos-on-suspend-and-pin-them-again-on-resume-v2.patch
reply other threads:[~2015-07-30 19:12 UTC|newest]
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