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-sunplus.c b/drivers/hid/hid-sunplus.c
index 438107d..164ed56 100644
--- a/drivers/hid/hid-sunplus.c
+++ b/drivers/hid/hid-sunplus.c
@@ -22,16 +22,17 @@
#include "hid-ids.h"
-static void sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
- unsigned int rsize)
+static __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
{
- if (rsize >= 107 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
+ if (*rsize >= 107 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
rdesc[106] == 0x03) {
dev_info(&hdev->dev, "fixing up Sunplus Wireless Desktop "
"report descriptor\n");
rdesc[105] = rdesc[110] = 0x03;
rdesc[106] = rdesc[111] = 0x21;
}
+ return rdesc;
}
#define sp_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
