Re: 2.6.15-rc5-mm2: evdev problem

[Rafael J. Wysocki]

The evdev driver is still broken due to the wrong order of arguments of
copy_to_user() in evdev_event_to_user().

The following patch fixes this issue.


Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Signed-off-by: Dmitry Torokhov <dtor@xxxxxxx>
Index: linux-2.6.15-rc2-mm1/drivers/input/evdev.c
===================================================================
--- linux-2.6.15-rc2-mm1.orig/drivers/input/evdev.c	2005-11-23 22:07:30.000000000 +0100
+++ linux-2.6.15-rc2-mm1/drivers/input/evdev.c	2005-11-26 17:38:02.000000000 +0100
@@ -194,7 +194,7 @@
 	return 0;
 }
 
-static int evdev_event_to_user(const char __user *buffer, struct input_event *event)
+static int evdev_event_to_user(char __user *buffer, struct input_event *event)
 {
 	if (COMPAT_TEST) {
 		struct input_event_compat compat_event;
@@ -205,11 +205,11 @@
 		compat_event.code = event->code;
 		compat_event.value = event->value;
 
-		if (copy_to_user(&compat_event, buffer, sizeof(struct input_event_compat)))
+		if (copy_to_user(buffer, &compat_event, sizeof(struct input_event_compat)))
 			return -EFAULT;
 
 	} else {
-		if (copy_to_user(event, buffer, sizeof(struct input_event)))
+		if (copy_to_user(buffer, event, sizeof(struct input_event)))
 			return -EFAULT;
 	}
 

-
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