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drm/msm/gpu: Don't map command buffers with nr_relocs equal to 0

PATCH New Jordan Crouse 1 participant 1 message Oct 15, 2018

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Jordan Crouse

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PATCH 1/1 drm/msm/gpu: Don't map command buffers with nr_relocs equal to 0

If a command buffer doesn't have any relocs assigned to it there then is no need to map it in the kernel address space.

Signed-off-by Jordan Crouse <[email protected]>
---
 drivers/gpu/drm/msm/msm_gem_submit.c | 3 +++
 1 file changed, 3 insertions(+)
drivers/gpu/drm/msm/msm_gem_submit.c +3 -0
index aca7379b9c2e..1b05b8481c31 100644
@@ -317,6 +317,9 @@ static int submit_reloc(struct msm_gem_submit *submit, struct msm_gem_object *ob
 	uint32_t *ptr;
 	int ret = 0;
 
+	if (!nr_relocs)
+		return 0;
+
 	if (offset % 4) {
 		DRM_ERROR("non-aligned cmdstream buffer: %u\n", offset);
 		return -EINVAL;
Signature · 6 lines
2.18.0

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