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nouveau: bring back legacy mmap handler 

nouveau userspace back at 1.0.1 used to call the X server
DRIOpenDRMMaster interface even for DRI2 (doh!), this attempts
to map the sarea and fails if it can't.

Since 884c6dabb0 from Daniel,
this fails, but only ancient drivers would see it.

Revert the nouveau bits of that fix.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org>  # 3.18
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Dave Airlie 2014-12-16 16:33:09 +10:00
parent 97bf6af1f9
commit 2036eaa740
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/nouveau/nouveau_ttm.c
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@ -28,6 +28,7 @@
#include "nouveau_ttm.h"
#include "nouveau_gem.h"
#include "drm_legacy.h"
static int
nouveau_vram_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
{
@ -281,7 +282,7 @@ nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev);
if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
return -EINVAL;
return drm_legacy_mmap(filp, vma);
return ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
}