Commit ff66e3ce authored by Andrew Morton's avatar Andrew Morton Committed by Greg Kroah-Hartman
Browse files

drivers/usb/core/devio.c: suppress warning with 64k PAGE_SIZE



drivers/usb/core/devio.c: In function 'proc_control':
drivers/usb/core/devio.c:657: warning: comparison is always false due to limited range of data type

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 8873aaa6
......@@ -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)
......
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