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authorIvo van Doorn <ivdoorn@gmail.com>2008-06-16 19:57:11 +0200
committerJohn W. Linville <linville@tuxdriver.com>2008-06-26 16:49:16 -0400
commitc1d35dfa0f7d75ba14c442143a9ad8e232d3edfb (patch)
tree9266a9be1068c66b6c80f0f5a73e47af88acd584 /drivers/net/wireless/rt2x00/rt2x00usb.h
parentd74f5ba473b915e5d4ea1ed391984bb62d9de8b1 (diff)
rt2x00: Fix sparse warning on nested container_of()
Sparse produces warnings about nested contain_of() statements, this means that lines like: interface_to_usbdev(to_usb_interface(rt2x00dev->dev)); will upset sparse. Add a new macro to rt2x00usb.h which will convert to device structure to the usb_device pointer in 2 steps to prevent this sparse warning. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00usb.h')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00usb.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h
index b1187c812e7..aad794adf52 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.h
@@ -26,6 +26,12 @@
#ifndef RT2X00USB_H
#define RT2X00USB_H
+#define to_usb_device_intf(d) \
+({ \
+ struct usb_interface *intf = to_usb_interface(d); \
+ interface_to_usbdev(intf); \
+})
+
/*
* This variable should be used with the
* usb_driver structure initialization.