This is a note to let you know that I've just added the patch titled USB: dummy-hcd: use usb_urb_dir_in instead of usb_pipein to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-dummy-hcd-use-usb_urb_dir_in-instead-of-usb_pipein.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 6dabeb891c001c592645df2f477fed9f5d959987 Mon Sep 17 00:00:00 2001 From: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Date: Mon, 21 Oct 2019 16:20:59 +0200 Subject: USB: dummy-hcd: use usb_urb_dir_in instead of usb_pipein From: Andrey Konovalov <andreyknvl@xxxxxxxxxx> 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@xxxxxxxxxx> Link: https://lore.kernel.org/r/4ae9e68ebca02f08a93ac61fe065057c9a01f0a8.1571667489.git.andreyknvl@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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: \ Patches currently in stable-queue which might be from andreyknvl@xxxxxxxxxx are queue-5.4/usb-dummy-hcd-use-usb_urb_dir_in-instead-of-usb_pipein.patch