diff options
Diffstat (limited to 'patches/collateral-evolutions/drm/02-revert-vm_mmap/drivers_gpu_drm_drm_bufs.patch')
| -rw-r--r-- | patches/collateral-evolutions/drm/02-revert-vm_mmap/drivers_gpu_drm_drm_bufs.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/patches/collateral-evolutions/drm/02-revert-vm_mmap/drivers_gpu_drm_drm_bufs.patch b/patches/collateral-evolutions/drm/02-revert-vm_mmap/drivers_gpu_drm_drm_bufs.patch new file mode 100644 index 00000000..af4681c3 --- /dev/null +++ b/patches/collateral-evolutions/drm/02-revert-vm_mmap/drivers_gpu_drm_drm_bufs.patch @@ -0,0 +1,31 @@ +--- a/drivers/gpu/drm/drm_bufs.c ++++ b/drivers/gpu/drm/drm_bufs.c +@@ -1541,6 +1541,20 @@ + retcode = -EINVAL; + goto done; + } ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)) ++ down_write(¤t->mm->mmap_sem); ++ virtual = do_mmap(file_priv->filp, 0, map->size, ++ PROT_READ | PROT_WRITE, ++ MAP_SHARED, ++ token); ++ up_write(¤t->mm->mmap_sem); ++ } else { ++ down_write(¤t->mm->mmap_sem); ++ virtual = do_mmap(file_priv->filp, 0, dma->byte_count, ++ PROT_READ | PROT_WRITE, ++ MAP_SHARED, 0); ++ up_write(¤t->mm->mmap_sem); ++#else + virtual = vm_mmap(file_priv->filp, 0, map->size, + PROT_READ | PROT_WRITE, + MAP_SHARED, +@@ -1549,6 +1563,7 @@ + virtual = vm_mmap(file_priv->filp, 0, dma->byte_count, + PROT_READ | PROT_WRITE, + MAP_SHARED, 0); ++#endif + } + if (virtual > -1024UL) { + /* Real error */ |