On Fri, 17 Mar 2017, Johan Hovold wrote:
> Use the new endpoint helpers to lookup the required bulk-in and bulk-out
> endpoints and the (typically) optional interrupt-in endpoint.
>
> Cc: Alan Stern <st...@rowland.harvard.edu>
> Cc: usb-stor...@lists.one-eyed-alien.net
> Signed-off-by: Johan Hovold <jo...@kernel.org>
> ---
> drivers/usb/storage/usb.c | 40 +++++++++++++---------------------------
> 1 file changed, 13 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
> index 615bea08ec0a..06615934fed1 100644
> --- a/drivers/usb/storage/usb.c
> +++ b/drivers/usb/storage/usb.c
> @@ -737,13 +737,11 @@ static void get_protocol(struct us_data *us)
> /* Get the pipe settings */
> static int get_pipes(struct us_data *us)
> {
> - struct usb_host_interface *altsetting =
> - us->pusb_intf->cur_altsetting;
> - int i;
> - struct usb_endpoint_descriptor *ep;
> - struct usb_endpoint_descriptor *ep_in = NULL;
> - struct usb_endpoint_descriptor *ep_out = NULL;
> - struct usb_endpoint_descriptor *ep_int = NULL;
> + struct usb_host_interface *alt = us->pusb_intf->cur_altsetting;
> + struct usb_endpoint_descriptor *ep_in;
> + struct usb_endpoint_descriptor *ep_out;
> + struct usb_endpoint_descriptor *ep_int;
> + int res;
>
> /*
> * Find the first endpoint of each type we need.
> @@ -751,28 +749,16 @@ static int get_pipes(struct us_data *us)
> * An optional interrupt-in is OK (necessary for CBI protocol).
> * We will ignore any others.
> */
> - for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
> - ep = &altsetting->endpoint[i].desc;
> -
> - if (usb_endpoint_xfer_bulk(ep)) {
> - if (usb_endpoint_dir_in(ep)) {
> - if (!ep_in)
> - ep_in = ep;
> - } else {
> - if (!ep_out)
> - ep_out = ep;
> - }
> - }
> -
> - else if (usb_endpoint_is_int_in(ep)) {
> - if (!ep_int)
> - ep_int = ep;
> - }
> + res = usb_find_common_endpoints(alt, &ep_in, &ep_out, NULL, NULL);
> + if (res) {
> + usb_stor_dbg(us, "bulk endpoints not found\n");
> + return res;
> }
>
> - if (!ep_in || !ep_out || (us->protocol == USB_PR_CBI && !ep_int)) {
> - usb_stor_dbg(us, "Endpoint sanity check failed! Rejecting
> dev.\n");
> - return -EIO;
> + res = usb_find_int_in_endpoint(alt, &ep_int);
> + if (res && us->protocol == USB_PR_CBI) {
> + usb_stor_dbg(us, "interrupt endpoint not found\n");
> + return res;
> }
>
> /* Calculate and store the pipe values */
Acked-by: Alan Stern <st...@rowland.harvard.edu>
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