[PATCH 5.4 001/165] USB: dummy-hcd: use usb_urb_dir_in instead of usb_pipein

Greg Kroah-Hartman
2020-01-11T10:20:29Z

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/4ae9e68ebca02f08a93ac61fe065057c9a01f0a8.1571667489.git.andreyknvl@google.com
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
@@ -1321,7 +1321,7 @@ 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) {
@@ -1409,7 +1409,7 @@ 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 {
@@ -1830,7 +1830,7 @@ 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) {
@@ -2385,7 +2385,7 @@ 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: \