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Message-ID: <Pine.LNX.4.64.0812291120450.9555@pc-004.diku.dk>
Date: Mon, 29 Dec 2008 11:21:07 +0100 (CET)
From: Julia Lawall <julia@...u.dk>
To: jgarzik@...ox.com, netdev@...r.kernel.org, gregkh@...e.de,
linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 6/13] drivers/net/usb: use USB API functions rather than
constants
From: Julia Lawall <julia@...u.dk>
This set of patches introduces calls to the following set of functions:
usb_endpoint_dir_in(epd)
usb_endpoint_dir_out(epd)
usb_endpoint_is_bulk_in(epd)
usb_endpoint_is_bulk_out(epd)
usb_endpoint_is_int_in(epd)
usb_endpoint_is_int_out(epd)
usb_endpoint_num(epd)
usb_endpoint_type(epd)
usb_endpoint_xfer_bulk(epd)
usb_endpoint_xfer_control(epd)
usb_endpoint_xfer_int(epd)
usb_endpoint_xfer_isoc(epd)
In some cases, introducing one of these functions is not possible, and it
just replaces an explicit integer value by one of the following constants:
USB_ENDPOINT_XFER_BULK
USB_ENDPOINT_XFER_CONTROL
USB_ENDPOINT_XFER_INT
USB_ENDPOINT_XFER_ISOC
In drivers/net/wireless/zd1211rw/zd_usb.c the code:
(endpoint->bEndpointAddress & USB_TYPE_MASK) == USB_DIR_OUT
is suspicious. If it is intended to use USB_ENDPOINT_DIR_MASK rather than
USB_TYPE_MASK, then the whole conditional test could be converted to a call
to usb_endpoint_is_bulk_in.
An extract of the semantic patch that makes these changes is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r1@ struct usb_endpoint_descriptor *epd; @@
- ((epd->bmAttributes & \(USB_ENDPOINT_XFERTYPE_MASK\|3\)) ==
- \(USB_ENDPOINT_XFER_CONTROL\|0\))
+ usb_endpoint_xfer_control(epd)
@r5@ struct usb_endpoint_descriptor *epd; @@
- ((epd->bEndpointAddress & \(USB_ENDPOINT_DIR_MASK\|0x80\)) ==
- \(USB_DIR_IN\|0x80\))
+ usb_endpoint_dir_in(epd)
@inc@
@@
#include <linux/usb.h>
@depends on !inc && (r1||r5)@
@@
+ #include <linux/usb.h>
#include <linux/usb/...>
// </smpl>
Signed-off-by: Julia Lawall <julia@...u.dk>
---
drivers/net/usb/hso.c | 2 +-
drivers/net/wireless/zd1211rw/zd_usb.c | 3 +--
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 2d41a10..6c30c4f 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -3177,7 +3177,7 @@ static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
for (i = 0; i < iface->desc.bNumEndpoints; i++) {
endp = &iface->endpoint[i].desc;
if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
- ((endp->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == type))
+ (usb_endpoint_type(endp) == type))
return endp;
}
diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c
index 04c1396..b5db57d 100644
--- a/drivers/net/wireless/zd1211rw/zd_usb.c
+++ b/drivers/net/wireless/zd1211rw/zd_usb.c
@@ -1065,8 +1065,7 @@ static int eject_installer(struct usb_interface *intf)
/* Find bulk out endpoint */
endpoint = &iface_desc->endpoint[1].desc;
if ((endpoint->bEndpointAddress & USB_TYPE_MASK) == USB_DIR_OUT &&
- (endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_BULK) {
+ usb_endpoint_xfer_bulk(endpoint)) {
bulk_out_ep = endpoint->bEndpointAddress;
} else {
dev_err(&udev->dev,
--
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