On 03/13/2015 05:42 PM, Benjamin Tissoires wrote:
No need to retrieve the USB handle in input_mapping() when we already
do that in probe. It also allows to use the quirk without having to
add the product ID matching.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---
Nick,
no need to cc DIGImend-devel when replying on this one, I'll send the same
to DIGImend-devel as soon as I have a patchwork link.
Cheers,
Benjamin
drivers/hid/hid-uclogic.c | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/hid/hid-uclogic.c b/drivers/hid/hid-uclogic.c
index bdda9fd..6473e83 100644
--- a/drivers/hid/hid-uclogic.c
+++ b/drivers/hid/hid-uclogic.c
@@ -627,6 +627,7 @@ struct uclogic_drvdata {
__u8 *rdesc;
unsigned int rsize;
bool invert_pen_inrange;
+ bool ignore_pen_interface;
};
static __u8 *uclogic_report_fixup(struct hid_device *hdev, __u8 *rdesc,
@@ -719,16 +720,12 @@ static int uclogic_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
- struct usb_interface *intf;
-
- if (hdev->product == USB_DEVICE_ID_HUION_TABLET) {
- intf = to_usb_interface(hdev->dev.parent);
+ struct uclogic_drvdata *drvdata = hid_get_drvdata(hdev);
- /* discard the unused pen interface */
- if ((intf->cur_altsetting->desc.bInterfaceNumber != 0) &&
- (field->application == HID_DG_PEN))
- return -1;
- }
+ /* discard the unused pen interface */
+ if ((drvdata->ignore_pen_interface) &&
+ (field->application == HID_DG_PEN))
+ return -1;
/* let hid-core decide what to do */
return 0;
@@ -908,6 +905,8 @@ static int uclogic_probe(struct hid_device *hdev,
return rc;
}
drvdata->invert_pen_inrange = true;
+ } else {
+ drvdata->ignore_pen_interface = true;
}
break;
}
This looks fine to me logically, but the "ignore_pen_interface" name is a bit
confusing.
From the driver code and comments it follows that "pen interface" is the USB
interface #0 and we're not ignoring it (uclogic_probe code becomes the worst
here). I think that it is better to call it in terms of what the
"input_mapping" description says, i.e. "ignore_pen_usage".
Nick
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