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-sony.c b/drivers/hid/hid-sony.c
index 402d5574b574..9fa034915185 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -31,17 +31,18 @@ struct sony_sc {
 };
 
 /* Sony Vaio VGX has wrongly mouse pointer declared as constant */
-static void sony_report_fixup(struct hid_device *hdev, __u8 *rdesc,
-                unsigned int rsize)
+static __u8 *sony_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+                unsigned int *rsize)
 {
         struct sony_sc *sc = hid_get_drvdata(hdev);
 
         if ((sc->quirks & VAIO_RDESC_CONSTANT) &&
-                        rsize >= 56 && rdesc[54] == 0x81 && rdesc[55] == 0x07) {
+                        *rsize >= 56 && rdesc[54] == 0x81 && rdesc[55] == 0x07) {
                 dev_info(&hdev->dev, "Fixing up Sony Vaio VGX report "
                                 "descriptor\n");
                 rdesc[55] = 0x06;
         }
+        return rdesc;
 }
 
 /*