diff options
Diffstat (limited to 'drivers/usb/misc/cypress_cy7c63.c')
| -rw-r--r-- | drivers/usb/misc/cypress_cy7c63.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/usb/misc/cypress_cy7c63.c b/drivers/usb/misc/cypress_cy7c63.c index 14faec51d7a5..75f5a740cba3 100644 --- a/drivers/usb/misc/cypress_cy7c63.c +++ b/drivers/usb/misc/cypress_cy7c63.c @@ -88,6 +88,9 @@ static int vendor_command(struct cypress *dev, unsigned char request, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER, address, data, iobuf, CYPRESS_MAX_REQSIZE, USB_CTRL_GET_TIMEOUT); + /* we must not process garbage */ + if (retval < 2) + goto err_buf; /* store returned data (more READs to be added) */ switch (request) { @@ -107,6 +110,7 @@ static int vendor_command(struct cypress *dev, unsigned char request, break; } +err_buf: kfree(iobuf); error: return retval; @@ -203,7 +207,7 @@ ATTRIBUTE_GROUPS(cypress); static int cypress_probe(struct usb_interface *interface, const struct usb_device_id *id) { - struct cypress *dev = NULL; + struct cypress *dev; int retval = -ENOMEM; /* allocate memory for our device state and initialize it */ |