From acfa5110b83b171ec509eaf2d1a9e93a5f4709bd Mon Sep 17 00:00:00 2001 From: Pekka Enberg Date: Fri, 30 Jan 2009 11:32:47 +0200 Subject: [PATCH] Staging: w35und: fix usb_control_msg() error handling in wb35_probe() If successful, the usb_control_msg() function returns the number of bytes transferred. Fix up wb35_probe() to only bail out if the function returns a negative number. Also, fix up ieee80211_alloc_hw() error code to ENOMEM; otherwise GCC complains that err might be undefined (and is right about that). Acked-by: Pavel Machek Reported-and-tested-by: Sandro Bonazzola Signed-off-by: Pekka Enberg Signed-off-by: Greg Kroah-Hartman --- drivers/staging/winbond/wbusb.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/staging/winbond/wbusb.c b/drivers/staging/winbond/wbusb.c index 49f1bf0acfb0..f716b2e92b65 100644 --- a/drivers/staging/winbond/wbusb.c +++ b/drivers/staging/winbond/wbusb.c @@ -319,16 +319,18 @@ static int wb35_probe(struct usb_interface *intf, const struct usb_device_id *id struct usb_device *udev = interface_to_usbdev(intf); struct wbsoft_priv *priv; struct ieee80211_hw *dev; - int err; + int nr, err; usb_get_dev(udev); // 20060630.2 Check the device if it already be opened - err = usb_control_msg(udev, usb_rcvctrlpipe( udev, 0 ), - 0x01, USB_TYPE_VENDOR|USB_RECIP_DEVICE|USB_DIR_IN, - 0x0, 0x400, <mp, 4, HZ*100 ); - if (err) + nr = usb_control_msg(udev, usb_rcvctrlpipe( udev, 0 ), + 0x01, USB_TYPE_VENDOR|USB_RECIP_DEVICE|USB_DIR_IN, + 0x0, 0x400, <mp, 4, HZ*100 ); + if (nr < 0) { + err = nr; goto error; + } ltmp = cpu_to_le32(ltmp); if (ltmp) { // Is already initialized? @@ -337,8 +339,10 @@ static int wb35_probe(struct usb_interface *intf, const struct usb_device_id *id } dev = ieee80211_alloc_hw(sizeof(*priv), &wbsoft_ops); - if (!dev) + if (!dev) { + err = -ENOMEM; goto error; + } priv = dev->priv; -- 2.20.1