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usb: rework usb_maxpacket() using usb_pipe_endpoint() 

Rework the body of usb_maxpacket() and just rely on the
usb_pipe_endpoint() helper function to retrieve the host endpoint
instead of doing it by hand.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/r/20220317035514.6378-10-mailhol.vincent@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vincent Mailhol 2022-03-17 12:55:14 +09:00 committed by Greg Kroah-Hartman
parent 2ddf7617d5
commit bdddc253b0
1 changed files with 1 additions and 7 deletions
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8
include/linux/usb.h
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@ -1971,13 +1971,7 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
static inline u16 usb_maxpacket(struct usb_device *udev, int pipe) static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
{ {
struct usb_host_endpoint *ep; struct usb_host_endpoint *ep = usb_pipe_endpoint(udev, pipe);
unsigned epnum = usb_pipeendpoint(pipe);
if (usb_pipeout(pipe))
ep = udev->ep_out[epnum];
else
ep = udev->ep_in[epnum];
if (!ep) if (!ep)
return 0; return 0;