staging/usbip: fix store_attach() sscanf return value check

sscanf() parses the input buffer for four input items. However,
the return value check is incorrect, as it checks for one input
item instead of four which is what it is expecting in the input
buffer. As a result, sscanf() will always fail even when the input
buffer is correct.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/usbip/vhci_sysfs.c b/drivers/staging/usbip/vhci_sysfs.c
index 47bddcdde0a621330a063d297b132f8da8396b72..211f43f67ea25f28ca46146bbadc099b2532924b 100644 (file)
--- a/drivers/staging/usbip/vhci_sysfs.c
+++ b/drivers/staging/usbip/vhci_sysfs.c
@@ -184,7 +184,7 @@ static ssize_t store_attach(struct device *dev, struct device_attribute *attr,
         * @devid: unique device identifier in a remote host
         * @speed: usb device speed in a remote host
         */
-       if (sscanf(buf, "%u %u %u %u", &rhport, &sockfd, &devid, &speed) != 1)
+       if (sscanf(buf, "%u %u %u %u", &rhport, &sockfd, &devid, &speed) != 4)
                return -EINVAL;
 
        usbip_dbg_vhci_sysfs("rhport(%u) sockfd(%u) devid(%u) speed(%u)\n",