HID: only dump report traffic with debug level 2

Currently using debug=1 with hid module prints out all sent and received
reports to the kernel log, while in many cases we only want to see the
report descriptors and hid-input mappings that are printed when a device
is probed.

Add new level debug=2, and only dump the report traffic with that level.

Signed-off-by: Anssi Hannula <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>

drivers/hid/hid-core.c

···
 
 #ifdef CONFIG_HID_DEBUG
 int hid_debug = 0;
-module_param_named(debug, hid_debug, bool, 0600);
-MODULE_PARM_DESC(debug, "Turn HID debugging mode on and off");
+module_param_named(debug, hid_debug, int, 0600);
+MODULE_PARM_DESC(debug, "HID debugging (0=off, 1=probing info, 2=continuous data dumping)");
 EXPORT_SYMBOL_GPL(hid_debug);
 #endif
 

drivers/hid/hid-debug.c

···
 EXPORT_SYMBOL_GPL(hid_dump_device);
 
 void hid_dump_input(struct hid_usage *usage, __s32 value) {
-	if (!hid_debug)
+	if (hid_debug < 2)
 		return;
 
 	printk(KERN_DEBUG "hid-debug: input ");