[PATCH] drm/radeon: don't allow RADEON_GEM_DOMAIN_CPU for command submission

[Marek Olšák]

From: Marek Ol??k <marek.ol...@amd.com>

It hangs the hardware.

Signed-off-by: Marek Ol??k <marek.olsak at amd.com>
---
 drivers/gpu/drm/radeon/radeon_cs.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c 
b/drivers/gpu/drm/radeon/radeon_cs.c
index 2b6e0eb..2b78191 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;
-- 
1.9.1