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-apple.c b/drivers/hid/hid-apple.c
index bba05d0..eaeca56 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -246,17 +246,18 @@
/*
* MacBook JIS keyboard has wrong logical maximum
*/
-static void apple_report_fixup(struct hid_device *hdev, __u8 *rdesc,
- unsigned int rsize)
+static __u8 *apple_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
{
struct apple_sc *asc = hid_get_drvdata(hdev);
- if ((asc->quirks & APPLE_RDESC_JIS) && rsize >= 60 &&
+ if ((asc->quirks & APPLE_RDESC_JIS) && *rsize >= 60 &&
rdesc[53] == 0x65 && rdesc[59] == 0x65) {
dev_info(&hdev->dev, "fixing up MacBook JIS keyboard report "
"descriptor\n");
rdesc[53] = rdesc[59] = 0xe7;
}
+ return rdesc;
}
static void apple_setup_input(struct input_dev *input)