diff options
| author | Samiullah Khawaja <skhawaja@google.com> | 2024-12-12 00:20:30 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-12-13 05:49:07 +0300 |
| commit | b400f4b87430c105d92550cee5a72aea01fdf3d6 (patch) | |
| tree | d00d81f3d59142758985f901fc2f4b5de52eb693 /net/core/devmem.c | |
| parent | 8156c310499a34c8f42b2e2b7360abb805683bbe (diff) | |
| download | linux-b400f4b87430c105d92550cee5a72aea01fdf3d6.tar.xz | |
page_pool: Set `dma_sync` to false for devmem memory provider
Move the `dma_map` and `dma_sync` checks to `page_pool_init` to make
them generic. Set dma_sync to false for devmem memory provider because
the dma_sync APIs should not be used for dma_buf backed devmem memory
provider.
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Samiullah Khawaja <skhawaja@google.com>
Signed-off-by: Mina Almasry <almasrymina@google.com>
Link: https://patch.msgid.link/20241211212033.1684197-4-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core/devmem.c')
| -rw-r--r-- | net/core/devmem.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/net/core/devmem.c b/net/core/devmem.c index 11b91c12ee11..3ebdeed2bf18 100644 --- a/net/core/devmem.c +++ b/net/core/devmem.c @@ -331,11 +331,10 @@ int mp_dmabuf_devmem_init(struct page_pool *pool) if (!binding) return -EINVAL; - if (!pool->dma_map) - return -EOPNOTSUPP; - - if (pool->dma_sync) - return -EOPNOTSUPP; + /* dma-buf dma addresses do not need and should not be used with + * dma_sync_for_cpu/device. Force disable dma_sync. + */ + pool->dma_sync = false; if (pool->p.order != 0) return -E2BIG; |