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HID: allow resizing and replacing report descriptors

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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>
This commit is contained in:
Nikolai Kondrashov
2010-08-06 23:03:06 +04:00
committed by Jiri Kosina
parent 3cfc2c42c1
commit 73e4008ddd
17 changed files with 72 additions and 56 deletions
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7
drivers/hid/hid-prodikeys.c
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@@ -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,