diff options
| -rw-r--r-- | drivers/staging/usbip/userspace/libsrc/usbip_common.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_common.c b/drivers/staging/usbip/userspace/libsrc/usbip_common.c index 998c11c..238bf5b 100644 --- a/drivers/staging/usbip/userspace/libsrc/usbip_common.c +++ b/drivers/staging/usbip/userspace/libsrc/usbip_common.c @@ -127,10 +127,23 @@ int read_attr_value(struct udev_device *dev, const char *name, goto err; } + /* The client chooses the device configuration + * when attaching it so right after being bound + * to usbip-host on the server the device will + * have no configuration. + * Therefore, attributes such as bConfigurationValue + * and bNumInterfaces will not exist and sscanf will + * fail. Check for these cases and don't treat them + * as errors. + */ + ret = sscanf(attr, format, &num); if (ret < 1) { - err("sscanf failed"); - goto err; + if (strcmp(name, "bConfigurationValue") && + strcmp(name, "bNumInterfaces")) { + err("sscanf failed for attribute %s", name); + goto err; + } } err: |
