From 73e4008ddddc84d5f2499c17012b340a0dae153e Mon Sep 17 00:00:00 2001 From: Nikolai Kondrashov Date: Fri, 6 Aug 2010 23:03:06 +0400 Subject: 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 Signed-off-by: Jiri Kosina --- drivers/hid/hid-prodikeys.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/hid/hid-prodikeys.c') diff --git a/drivers/hid/hid-prodikeys.c b/drivers/hid/hid-prodikeys.c index 845f428b809..48eab84f53b 100644 --- a/drivers/hid/hid-prodikeys.c +++ b/drivers/hid/hid-prodikeys.c @@ -740,10 +740,10 @@ int pcmidi_snd_terminate(struct pcmidi_snd *pm) /* * PC-MIDI report descriptor for report id is wrong. */ -static void pk_report_fixup(struct hid_device *hdev, __u8 *rdesc, - unsigned int rsize) +static __u8 *pk_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) { - if (rsize == 178 && + if (*rsize == 178 && rdesc[111] == 0x06 && rdesc[112] == 0x00 && rdesc[113] == 0xff) { dev_info(&hdev->dev, "fixing up pc-midi keyboard report " @@ -751,6 +751,7 @@ static void pk_report_fixup(struct hid_device *hdev, __u8 *rdesc, rdesc[144] = 0x18; /* report 4: was 0x10 report count */ } + return rdesc; } static int pk_input_mapping(struct hid_device *hdev, struct hid_input *hi, -- cgit v1.2.3