[PATCH 3/5] drm/i915/selftests: request read access for mmap access tests

["David Hildenbrand (Arm)" <david@kernel.org>]

__igt_mmap_access() reads the buffer with access_process_vm() without
FOLL_FORCE, but creates the mapping with only PROT_WRITE. Request
PROT_READ as well so the test remains valid when we fix the ->access
fallback to properly check VMA access permissions.

Fixes: 9f909e215fea ("drm/i915: Implement vm_ops->access for gdb access into mmaps")
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
---
 drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 303be698891fd..d9c828032a1aa 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -1460,7 +1460,8 @@ static int __igt_mmap_access(struct drm_i915_private *i915,
 	if (err)
 		return err;
 
-	addr = igt_mmap_offset(i915, offset, obj->base.size, PROT_WRITE, MAP_SHARED);
+	addr = igt_mmap_offset(i915, offset, obj->base.size,
+			       PROT_READ | PROT_WRITE, MAP_SHARED);
 	if (IS_ERR_VALUE(addr))
 		return addr;
 	ptr = (unsigned long __user *)addr;

-- 
2.43.0