From: Peng Jiang <jiang.peng9@xxxxxxxxxx>
Add kerneldoc for 'virtio_dma_buf_attach' function to fix W=1 warnings:
drivers/virtio/virtio_dma_buf.c:41 function parameter 'dma_buf' not described in 'virtio_dma_buf_attach'
drivers/virtio/virtio_dma_buf.c:41 function parameter 'attach' not described in 'virtio_dma_buf_attach'
Signed-off-by: Peng Jiang <jiang.peng9@xxxxxxxxxx>
---
drivers/virtio/virtio_dma_buf.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_dma_buf.c b/drivers/virtio/virtio_dma_buf.c
index 3fe1d03b0645..18d261ba5197 100644
--- a/drivers/virtio/virtio_dma_buf.c
+++ b/drivers/virtio/virtio_dma_buf.c
@@ -35,7 +35,16 @@ struct dma_buf *virtio_dma_buf_export
EXPORT_SYMBOL(virtio_dma_buf_export);
/**
- * virtio_dma_buf_attach - mandatory attach callback for virtio dma-bufs
+ * virtio_dma_buf_attach - Mandatory attach callback for virtio dma-bufs
+ * @dma_buf: Pointer to the shared dma-buf structure
+ * @attach: Pointer to the newly created attachment metadata
+ *
+ * Description: Implements the standard dma-buf attach operation for virtio devices.
+ * Retrieves virtio-specific operations through container_of macro,
+ * then invokes device-specific attach callback if present.
+ * This enables virtio devices to participate in dma-buf sharing.
+ *
+ * Return: 0 on success, error code on failure
*/
int virtio_dma_buf_attach(struct dma_buf *dma_buf,
struct dma_buf_attachment *attach)
--
2.25.1
