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-monterey.c b/drivers/hid/hid-monterey.c
index 2cd05aa..c95c31e 100644
--- a/drivers/hid/hid-monterey.c
+++ b/drivers/hid/hid-monterey.c
@@ -22,14 +22,15 @@
#include "hid-ids.h"
-static void mr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
- unsigned int rsize)
+static __u8 *mr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
{
- if (rsize >= 30 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
+ if (*rsize >= 30 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
dev_info(&hdev->dev, "fixing up button/consumer in HID report "
"descriptor\n");
rdesc[30] = 0x0c;
}
+ return rdesc;
}
#define mr_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \