From: Andrey Konovalov andreyknvl@google.com
commit 6dabeb891c001c592645df2f477fed9f5d959987 upstream.
Commit fea3409112a9 ("USB: add direction bit to urb->transfer_flags") has added a usb_urb_dir_in() helper function that can be used to determine the direction of the URB. With that patch USB_DIR_IN control requests with wLength == 0 are considered out requests by real USB HCDs. This patch changes dummy-hcd to use the usb_urb_dir_in() helper to match that behavior.
Signed-off-by: Andrey Konovalov andreyknvl@google.com Link: https://lore.kernel.org/r/4ae9e68ebca02f08a93ac61fe065057c9a01f0a8.157166748... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/gadget/udc/dummy_hcd.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -1335,7 +1335,7 @@ static int dummy_perform_transfer(struct u32 this_sg; bool next_sg;
- to_host = usb_pipein(urb->pipe); + to_host = usb_urb_dir_in(urb); rbuf = req->req.buf + req->req.actual;
if (!urb->num_sgs) { @@ -1423,7 +1423,7 @@ top:
/* FIXME update emulated data toggle too */
- to_host = usb_pipein(urb->pipe); + to_host = usb_urb_dir_in(urb); if (unlikely(len == 0)) is_short = 1; else { @@ -1844,7 +1844,7 @@ restart:
/* find the gadget's ep for this request (if configured) */ address = usb_pipeendpoint (urb->pipe); - if (usb_pipein(urb->pipe)) + if (usb_urb_dir_in(urb)) address |= USB_DIR_IN; ep = find_endpoint(dum, address); if (!ep) { @@ -2399,7 +2399,7 @@ static inline ssize_t show_urb(char *buf s = "?"; break; } s; }), - ep, ep ? (usb_pipein(urb->pipe) ? "in" : "out") : "", + ep, ep ? (usb_urb_dir_in(urb) ? "in" : "out") : "", ({ char *s; \ switch (usb_pipetype(urb->pipe)) { \ case PIPE_CONTROL: \