From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
"Christian König" <christian.koenig@amd.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Sasha Levin" <sashal@kernel.org>
Subject: [PATCH 4.4 2/4] drm/nouveau: fix dma_address check for CPU/GPU sync
Date: Fri, 9 Jul 2021 15:18:14 +0200 [thread overview]
Message-ID: <20210709131533.590063641@linuxfoundation.org> (raw)
In-Reply-To: <20210709131529.395072769@linuxfoundation.org>
From: Christian König <christian.koenig@amd.com>
[ Upstream commit d330099115597bbc238d6758a4930e72b49ea9ba ]
AGP for example doesn't have a dma_address array.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210614110517.1624-1-christian.koenig@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/nouveau/nouveau_bo.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 78f520d05de9..58c310930bf2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -458,7 +458,7 @@ nouveau_bo_sync_for_device(struct nouveau_bo *nvbo)
struct ttm_dma_tt *ttm_dma = (struct ttm_dma_tt *)nvbo->bo.ttm;
int i;
- if (!ttm_dma)
+ if (!ttm_dma || !ttm_dma->dma_address)
return;
/* Don't waste time looping if the object is coherent */
@@ -478,7 +478,7 @@ nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo)
struct ttm_dma_tt *ttm_dma = (struct ttm_dma_tt *)nvbo->bo.ttm;
int i;
- if (!ttm_dma)
+ if (!ttm_dma || !ttm_dma->dma_address)
return;
/* Don't waste time looping if the object is coherent */
--
2.30.2
next prev parent reply other threads:[~2021-07-09 13:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-09 13:18 [PATCH 4.4 0/4] 4.4.275-rc1 review Greg Kroah-Hartman
2021-07-09 13:18 ` [PATCH 4.4 1/4] scsi: sr: Return appropriate error code when disk is ejected Greg Kroah-Hartman
2021-07-09 13:18 ` Greg Kroah-Hartman [this message]
2021-07-09 13:18 ` [PATCH 4.4 3/4] xen/events: reset active flag for lateeoi events later Greg Kroah-Hartman
2021-07-09 13:18 ` [PATCH 4.4 4/4] arm: kprobes: Allow to handle reentered kprobe on single-stepping Greg Kroah-Hartman
2021-07-09 14:57 ` [PATCH 4.4 0/4] 4.4.275-rc1 review Pavel Machek
2021-07-09 21:44 ` Shuah Khan
2021-07-10 19:50 ` Guenter Roeck
2021-07-11 2:39 ` Naresh Kamboju
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