diff options
| author | Xu Yang <xu.yang_2@nxp.com> | 2025-07-21 18:44:17 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-21 17:40:02 +0200 |
| commit | fcb476990beb55c958db0b5aa2e9ca772d0fc982 (patch) | |
| tree | 1c9fe5cf7edc5bd29ef881275eaff2e0b38d6c38 | |
| parent | 5cc1f66cb23cccc704e3def27ad31ed479e934a5 (diff) | |
usb: core: add urb->sgt parameter description
The parameter description of urb->sgt is lost, this will add it for
completeness.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/all/20250711182803.1d548467@canb.auug.org.au/
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Fixes: 488e6eaab88c ("usb: core: add dma-noncoherent buffer alloc and free API")
Link: https://lore.kernel.org/r/20250721104417.3442530-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/usb.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h index 535ac37198a1..9d662c6abb4d 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1455,6 +1455,10 @@ typedef void (*usb_complete_t)(struct urb *); * @sg: scatter gather buffer list, the buffer size of each element in * the list (except the last) must be divisible by the endpoint's * max packet size if no_sg_constraint isn't set in 'struct usb_bus' + * @sgt: used to hold a scatter gather table returned by usb_alloc_noncoherent(), + * which describes the allocated non-coherent and possibly non-contiguous + * memory and is guaranteed to have 1 single DMA mapped segment. The + * allocated memory needs to be freed by usb_free_noncoherent(). * @num_mapped_sgs: (internal) number of mapped sg entries * @num_sgs: number of entries in the sg list * @transfer_buffer_length: How big is transfer_buffer. The transfer may |