USB HID: add 'quirks' module parameter
Add a 'quirks' module parameter for the usbhid module, so users can
add or modify quirks at module load time.
Signed-off-by: Paul Walmsley <paul@booyaka.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index a5fc8b5..27188bd 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -576,6 +576,44 @@
}
+/**
+ * usbhid_quirks_init: apply USB HID quirks specified at module load time
+ */
+int usbhid_quirks_init(char **quirks_param)
+{
+ u16 idVendor, idProduct;
+ u32 quirks;
+ int n = 0, m;
+
+ for (; quirks_param[n] && n < MAX_USBHID_BOOT_QUIRKS; n++) {
+
+ m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
+ &idVendor, &idProduct, &quirks);
+
+ if (m != 3 ||
+ usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
+ printk(KERN_WARNING
+ "Could not parse HID quirk module param %s\n",
+ quirks_param[n]);
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * usbhid_quirks_exit: release memory associated with dynamic_quirks
+ *
+ * Description:
+ * Release all memory associated with dynamic quirks. Called upon
+ * module unload.
+ *
+ * Returns: nothing
+ */
+void usbhid_quirks_exit(void)
+{
+ usbhid_remove_all_dquirks();
+}
/**
* usbhid_exists_squirk: return any static quirks for a USB HID device