[GIT PATCH 18/18] hiddev: fix off-by-one for num_values in uref_multi requests

[Dmitry Torokhov <dtor_core@ameritech.net>]

From: Ben Collins <bcollins@ubuntu.com>

Input: hiddev - fix off-by-one for num_values in uref_multi requests

Found this when working with a HAPP UGCI device. It has a usage with 7
indexes. I could read them all one at a time, but using a multiref it
would only allow me to read the first 6. The patch below fixed it.

Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---

 drivers/usb/input/hiddev.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

Index: work/drivers/usb/input/hiddev.c
===================================================================
--- work.orig/drivers/usb/input/hiddev.c
+++ work/drivers/usb/input/hiddev.c
@@ -631,7 +631,7 @@ static int hiddev_ioctl(struct inode *in
 
 			else if ((cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES) &&
 				 (uref_multi->num_values > HID_MAX_MULTI_USAGES ||
-				  uref->usage_index + uref_multi->num_values >= field->report_count))
+				  uref->usage_index + uref_multi->num_values > field->report_count))
 				goto inval;
 			}
 

-
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