From: Marek Olšák <marek.olsak@amd.com>
Date: Wed, 9 Dec 2015 21:45:56 +0000 (+0100)
Subject: winsys/amdgpu: clear the buffer cache on mmap failure and try again
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=369afdb7b61b3fdc8fa2851c751d8349f15bc822;p=mesa.git

winsys/amdgpu: clear the buffer cache on mmap failure and try again

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
---

diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
index 90f3a9f35d0..a8447731dc9 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
@@ -229,6 +229,11 @@ static void *amdgpu_bo_map(struct pb_buffer *buf,
        return bo->user_ptr;
 
    r = amdgpu_bo_cpu_map(bo->bo, &cpu);
+   if (r) {
+      /* Clear the cache and try again. */
+      pb_cache_release_all_buffers(&bo->ws->bo_cache);
+      r = amdgpu_bo_cpu_map(bo->bo, &cpu);
+   }
    return r ? NULL : cpu;
 }