diff options
Diffstat (limited to 'drivers/usb/core/devio.c')
| -rw-r--r-- | drivers/usb/core/devio.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index ae94176c64e..039ba23cc8b 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -647,6 +647,7 @@ static int proc_control(struct dev_state *ps, void __user *arg) struct usbdevfs_ctrltransfer ctrl; unsigned int tmo; unsigned char *tbuf; + unsigned wLength; int i, j, ret; if (copy_from_user(&ctrl, arg, sizeof(ctrl))) @@ -654,7 +655,8 @@ static int proc_control(struct dev_state *ps, void __user *arg) ret = check_ctrlrecip(ps, ctrl.bRequestType, ctrl.wIndex); if (ret) return ret; - if (ctrl.wLength > PAGE_SIZE) + wLength = ctrl.wLength; /* To suppress 64k PAGE_SIZE warning */ + if (wLength > PAGE_SIZE) return -EINVAL; tbuf = (unsigned char *)__get_free_page(GFP_KERNEL); if (!tbuf) |