| Message ID | 20220913192757.37727-16-dmitry.osipenko@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Move all drivers to a common dma-buf locking convention | expand |
Hi Dmitry, Thanks very much for the series. On Wed, 14 Sept 2022 at 00:59, Dmitry Osipenko <dmitry.osipenko@collabora.com> wrote: > > Move dma_buf_vmap/vunmap_unlocked() functions to the dynamic locking > specification by asserting that the reservation lock is held. Thanks for the patch; just a minor nit - I think you mean dma_buf_vmap / vunmap() here, and not _unlocked? Best, Sumit. > > Acked-by: Christian König <christian.koenig@amd.com> > Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> > --- > drivers/dma-buf/dma-buf.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c > index 50db7571dc4b..80fd6ccc88c6 100644 > --- a/drivers/dma-buf/dma-buf.c > +++ b/drivers/dma-buf/dma-buf.c > @@ -1450,6 +1450,8 @@ int dma_buf_vmap(struct dma_buf *dmabuf, struct iosys_map *map) > if (WARN_ON(!dmabuf)) > return -EINVAL; > > + dma_resv_assert_held(dmabuf->resv); > + > if (!dmabuf->ops->vmap) > return -EINVAL; > > @@ -1510,6 +1512,8 @@ void dma_buf_vunmap(struct dma_buf *dmabuf, struct iosys_map *map) > if (WARN_ON(!dmabuf)) > return; > > + dma_resv_assert_held(dmabuf->resv); > + > BUG_ON(iosys_map_is_null(&dmabuf->vmap_ptr)); > BUG_ON(dmabuf->vmapping_counter == 0); > BUG_ON(!iosys_map_is_equal(&dmabuf->vmap_ptr, map)); > -- > 2.37.3 > -- Thanks and regards, Sumit Semwal (he / him) Tech Lead - LCG, Vertical Technologies Linaro.org │ Open source software for ARM SoCs
On 9/20/22 17:13, Sumit Semwal wrote: > Hi Dmitry, > > Thanks very much for the series. > > On Wed, 14 Sept 2022 at 00:59, Dmitry Osipenko > <dmitry.osipenko@collabora.com> wrote: >> >> Move dma_buf_vmap/vunmap_unlocked() functions to the dynamic locking >> specification by asserting that the reservation lock is held. > Thanks for the patch; just a minor nit - I think you mean dma_buf_vmap > / vunmap() here, and not _unlocked? Yes, the _unlocked should be dropped here. Thank you for the review!
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index 50db7571dc4b..80fd6ccc88c6 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -1450,6 +1450,8 @@ int dma_buf_vmap(struct dma_buf *dmabuf, struct iosys_map *map) if (WARN_ON(!dmabuf)) return -EINVAL; + dma_resv_assert_held(dmabuf->resv); + if (!dmabuf->ops->vmap) return -EINVAL; @@ -1510,6 +1512,8 @@ void dma_buf_vunmap(struct dma_buf *dmabuf, struct iosys_map *map) if (WARN_ON(!dmabuf)) return; + dma_resv_assert_held(dmabuf->resv); + BUG_ON(iosys_map_is_null(&dmabuf->vmap_ptr)); BUG_ON(dmabuf->vmapping_counter == 0); BUG_ON(!iosys_map_is_equal(&dmabuf->vmap_ptr, map));