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-samsung.c b/drivers/hid/hid-samsung.c
index bda0fd6..3589444 100644
--- a/drivers/hid/hid-samsung.c
+++ b/drivers/hid/hid-samsung.c
@@ -61,10 +61,10 @@
"descriptor\n", rsize);
}
-static void samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc,
- unsigned int rsize)
+static __u8 *samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
{
- if (rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
+ if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
rdesc[182] == 0x40) {
@@ -74,24 +74,25 @@
rdesc[180] = 0x06;
rdesc[182] = 0x42;
} else
- if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
+ if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
rdesc[194] == 0x25 && rdesc[195] == 0x12) {
samsung_irda_dev_trace(hdev, 203);
rdesc[193] = 0x1;
rdesc[195] = 0xf;
} else
- if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
+ if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
rdesc[126] == 0x25 && rdesc[127] == 0x11) {
samsung_irda_dev_trace(hdev, 135);
rdesc[125] = 0x1;
rdesc[127] = 0xe;
} else
- if (rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
+ if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
rdesc[162] == 0x25 && rdesc[163] == 0x01) {
samsung_irda_dev_trace(hdev, 171);
rdesc[161] = 0x1;
rdesc[163] = 0x3;
}
+ return rdesc;
}
#define samsung_kbd_mouse_map_key_clear(c) \
@@ -130,11 +131,12 @@
return 1;
}
-static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
- unsigned int rsize)
+static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
{
if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product)
- samsung_irda_report_fixup(hdev, rdesc, rsize);
+ rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize);
+ return rdesc;
}
static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi,