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-kye.c b/drivers/hid/hid-kye.c
index f887171..817247e 100644
--- a/drivers/hid/hid-kye.c
+++ b/drivers/hid/hid-kye.c
@@ -23,10 +23,10 @@
* - report size 8 count 1 must be size 1 count 8 for button bitfield
* - change the button usage range to 4-7 for the extra buttons
*/
-static void kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
- unsigned int rsize)
+static __u8 *kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
{
- if (rsize >= 74 &&
+ if (*rsize >= 74 &&
rdesc[61] == 0x05 && rdesc[62] == 0x08 &&
rdesc[63] == 0x19 && rdesc[64] == 0x08 &&
rdesc[65] == 0x29 && rdesc[66] == 0x0f &&
@@ -40,6 +40,7 @@
rdesc[72] = 0x01;
rdesc[74] = 0x08;
}
+ return rdesc;
}
static const struct hid_device_id kye_devices[] = {