diff options
| author |   Marek Szyprowski <m.szyprowski@samsung.com> | 2025-05-07 18:09:12 +0200 |
|---|---|---|
| committer |   Christian König <christian.koenig@amd.com> | 2025-06-11 13:18:07 +0200 |
| commit | afe382843717d44b24ef5014d57dcbaab75a4052 (patch) | |
| tree | 6be7d9cb4047164a1e1aae112bb4519a9c6e0c4f | |
| parent | dma-buf: fix compare in WARN_ON_ONCE (diff) | |
| download | wireguard-linux-afe382843717d44b24ef5014d57dcbaab75a4052.tar.xz wireguard-linux-afe382843717d44b24ef5014d57dcbaab75a4052.zip | |
udmabuf: use sgtable-based scatterlist wrappers
Use common wrappers operating directly on the struct sg_table objects to
fix incorrect use of scatterlists sync calls. dma_sync_sg_for_*()
functions have to be called with the number of elements originally passed
to dma_map_sg_*() function, not the one returned in sgtable's nents.
Fixes: 1ffe09590121 ("udmabuf: fix dma-buf cpu access")
CC: stable@vger.kernel.org
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20250507160913.2084079-3-m.szyprowski@samsung.com
| -rw-r--r-- | drivers/dma-buf/udmabuf.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 7eee3eb47a8e..c9d0c68d2fcb 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -264,8 +264,7 @@ static int begin_cpu_udmabuf(struct dma_buf *buf, ubuf->sg = NULL; } } else { - dma_sync_sg_for_cpu(dev, ubuf->sg->sgl, ubuf->sg->nents, - direction); + dma_sync_sgtable_for_cpu(dev, ubuf->sg, direction); } return ret; @@ -280,7 +279,7 @@ static int end_cpu_udmabuf(struct dma_buf *buf, if (!ubuf->sg) return -EINVAL; - dma_sync_sg_for_device(dev, ubuf->sg->sgl, ubuf->sg->nents, direction); + dma_sync_sgtable_for_device(dev, ubuf->sg, direction); return 0; } |