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authorNikolai Kondrashov <spbnick@gmail.com>2010-08-06 23:03:06 +0400
committerJiri Kosina <jkosina@suse.cz>2010-08-09 19:52:42 +0200
commit73e4008ddddc84d5f2499c17012b340a0dae153e (patch)
treed3adfa8c5792e71c21cb7a9cd18517cce9c92685 /drivers/hid/hid-prodikeys.c
parent3cfc2c42c1cbc8e238bb9c0612c0df4565e3a8b4 (diff)
downloadlinux-2.6.38-lt-ux500-73e4008ddddc84d5f2499c17012b340a0dae153e.tar.gz
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>
Diffstat (limited to 'drivers/hid/hid-prodikeys.c')
-rw-r--r--drivers/hid/hid-prodikeys.c7
1 files changed, 4 insertions, 3 deletions
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,