HID: allow resizing and replacing report descriptors
Update hid_driver's report_fixup prototype to allow changing report
descriptor size and/or returning completely different report descriptor.
Update existing usage accordingly.
This is to give more freedom in descriptor fixup and to allow having a whole
fixed descriptor in the code for the sake of readability.
Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-zydacron.c b/drivers/hid/hid-zydacron.c
index 9e8d35a..aac1f92 100644
--- a/drivers/hid/hid-zydacron.c
+++ b/drivers/hid/hid-zydacron.c
@@ -27,10 +27,10 @@
* Zydacron remote control has an invalid HID report descriptor,
* that needs fixing before we can parse it.
*/
-static void zc_report_fixup(struct hid_device *hdev, __u8 *rdesc,
- unsigned int rsize)
+static __u8 *zc_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
{
- if (rsize >= 253 &&
+ if (*rsize >= 253 &&
rdesc[0x96] == 0xbc && rdesc[0x97] == 0xff &&
rdesc[0xca] == 0xbc && rdesc[0xcb] == 0xff &&
rdesc[0xe1] == 0xbc && rdesc[0xe2] == 0xff) {
@@ -40,6 +40,7 @@
rdesc[0x96] = rdesc[0xca] = rdesc[0xe1] = 0x0c;
rdesc[0x97] = rdesc[0xcb] = rdesc[0xe2] = 0x00;
}
+ return rdesc;
}
#define zc_map_key_clear(c) \