diff options
| author | Dave Airlie <airlied@redhat.com> | 2014-03-25 14:38:44 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2014-03-27 02:19:50 +0000 |
| commit | 347cf10aed1657a2b385a95f92763a67062c5ad3 (patch) | |
| tree | 0e63e153ca002dc47a37e1505b432ac54038e61e | |
| parent | b098d6726bbfb94c06d6e1097466187afddae61f (diff) | |
| download | linux-347cf10aed1657a2b385a95f92763a67062c5ad3.tar.bz2 | |
drm/udl: take reference to device struct for dma-bufs
this stops the device from being deleted before all the dma-bufs
on it are freed, this fixes an oops when you unplug a udl device while
it has imported a buffer from another device.
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/udl/udl_gem.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c index 8d67b943ac05..0394811251bd 100644 --- a/drivers/gpu/drm/udl/udl_gem.c +++ b/drivers/gpu/drm/udl/udl_gem.c @@ -177,8 +177,10 @@ void udl_gem_free_object(struct drm_gem_object *gem_obj) if (obj->vmapping) udl_gem_vunmap(obj); - if (gem_obj->import_attach) + if (gem_obj->import_attach) { drm_prime_gem_destroy(gem_obj, obj->sg); + put_device(gem_obj->dev->dev); + } if (obj->pages) udl_gem_put_pages(obj); @@ -256,9 +258,12 @@ struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev, int ret; /* need to attach */ + get_device(dev->dev); attach = dma_buf_attach(dma_buf, dev->dev); - if (IS_ERR(attach)) + if (IS_ERR(attach)) { + put_device(dev->dev); return ERR_CAST(attach); + } get_dma_buf(dma_buf); @@ -282,6 +287,6 @@ fail_unmap: fail_detach: dma_buf_detach(dma_buf, attach); dma_buf_put(dma_buf); - + put_device(dev->dev); return ERR_PTR(ret); } |