[U-Boot] [PATCH v2 04/13] usb: xhci: add struct devrequest declaration to xhci.h

[Masahiro Yamada]

If xhci.h is included without include/usb.h, the compiler
complains like follows:
warning: 'struct devrequest' declared inside parameter list

We have two options to teach the compiler that devrequest is
a structure:

[1] Declare "struct devrequest;" in xhci.h

[2] Include <include/usb.h> from xhci.h

This commit takes [1] because nothing else in xhci.h depends on
include/usb.h.  [2] would require the compiler additional header
parsing.

Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>
---

Changes in v2:
  - Rephrase git-log

 drivers/usb/host/xhci.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 2afa386..16dd61a 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1252,6 +1252,8 @@ void xhci_acknowledge_event(struct xhci_ctrl *ctrl);
 union xhci_trb *xhci_wait_for_event(struct xhci_ctrl *ctrl, trb_type expected);
 int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe,
 		 int length, void *buffer);
+
+struct devrequest;
 int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe,
 		 struct devrequest *req, int length, void *buffer);
 int xhci_check_maxpacket(struct usb_device *udev);
-- 
1.9.1