Commit cdff9f8e authored by Jerry Zhang's avatar Jerry Zhang Committed by Felipe Balbi

usb: gadget: f_fs: Pass along set_halt errors.

Users can apply i/o in the wrong direction on an
endpoint to stall it. In case there is an error
that does not allow the endpoint to be stalled,
we want the user to know.

An operation to stall the endpoint will return
EBADMSG if successful, EAGAIN if there are still
queued requests, and other errors depending on
the underlying implementation.

Also remove the conditional since it is always true.
Acked-by: default avatarMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: default avatarJerry Zhang <zhangjerry@google.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent cc29d4f6
......@@ -961,9 +961,8 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
/* In the meantime, endpoint got disabled or changed. */
ret = -ESHUTDOWN;
} else if (halt) {
/* Halt */
if (likely(epfile->ep == ep) && !WARN_ON(!ep->ep))
usb_ep_set_halt(ep->ep);
ret = usb_ep_set_halt(ep->ep);
if (!ret)
ret = -EBADMSG;
} else if (unlikely(data_len == -EINVAL)) {
/*
......
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