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staging: usbip: vhci_sysfs.c: check return value of sscanf

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Added code to check return value of sscanf.

Signed-off-by: John de la Garza <john@jjdev.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
John de la Garza 2014-03-06 10:36:34 -08:00 committed by Greg Kroah-Hartman
parent d62994701b
commit 88fa1ebfa2
1 changed files with 4 additions and 2 deletions
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6
drivers/staging/usbip/vhci_sysfs.c
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@ -114,7 +114,8 @@ static ssize_t store_detach(struct device *dev, struct device_attribute *attr,
int err;
__u32 rhport = 0;
sscanf(buf, "%u", &rhport);
if (sscanf(buf, "%u", &rhport) != 1)
return -EINVAL;
/* check rhport */
if (rhport >= VHCI_NPORTS) {
@ -182,7 +183,8 @@ 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
*/
sscanf(buf, "%u %u %u %u", &rhport, &sockfd, &devid, &speed);
if (sscanf(buf, "%u %u %u %u", &rhport, &sockfd, &devid, &speed) != 1)
return -EINVAL;
usbip_dbg_vhci_sysfs("rhport(%u) sockfd(%u) devid(%u) speed(%u)\n",
rhport, sockfd, devid, speed);