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>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/hid/hid-petalynx.c b/drivers/hid/hid-petalynx.c
index 500fbd0652dc..308d6ae48a3e 100644
--- a/drivers/hid/hid-petalynx.c
+++ b/drivers/hid/hid-petalynx.c
@@ -23,10 +23,10 @@
 #include "hid-ids.h"
 
 /* Petalynx Maxter Remote has maximum for consumer page set too low */
-static void pl_report_fixup(struct hid_device *hdev, __u8 *rdesc,
-                unsigned int rsize)
+static __u8 *pl_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+                unsigned int *rsize)
 {
-        if (rsize >= 60 && rdesc[39] == 0x2a && rdesc[40] == 0xf5 &&
+        if (*rsize >= 60 && rdesc[39] == 0x2a && rdesc[40] == 0xf5 &&
                         rdesc[41] == 0x00 && rdesc[59] == 0x26 &&
                         rdesc[60] == 0xf9 && rdesc[61] == 0x00) {
                 dev_info(&hdev->dev, "fixing up Petalynx Maxter Remote report "
@@ -34,6 +34,7 @@ static void pl_report_fixup(struct hid_device *hdev, __u8 *rdesc,
                 rdesc[60] = 0xfa;
                 rdesc[40] = 0xfa;
         }
+        return rdesc;
 }
 
 #define pl_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \