The patch below does not apply to the 3.14-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From ec65da385d46f63740c1c9230b891a6dcbd64c71 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@xxxxxxx>
Date: Tue, 27 May 2014 02:56:36 +0200
Subject: [PATCH] drm/radeon: don't allow RADEON_GEM_DOMAIN_CPU for command
submission
MIME-Version: 1.0
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It hangs the hardware.
Signed-off-by: Marek Olšák <marek.olsak@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 4b6f5b824153..41ecf8a60611 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -152,6 +152,12 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
uint32_t domain = r->write_domain ?
r->write_domain : r->read_domains;
+ if (domain & RADEON_GEM_DOMAIN_CPU) {
+ DRM_ERROR("RADEON_GEM_DOMAIN_CPU is not valid "
+ "for command submission\n");
+ return -EINVAL;
+ }
+
p->relocs[i].domain = domain;
if (domain == RADEON_GEM_DOMAIN_VRAM)
domain |= RADEON_GEM_DOMAIN_GTT;
--
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