linux-kernel - Re: [PATCH 8/9] HID: move apple quirks

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Date:	Mon, 12 May 2008 01:15:59 +0200
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	Jiri Kosina <jkosina@...e.cz>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	anssi.hannula@...il.com, akpm@...ux-foundation.org,
	Jiri Slaby <jslaby@...e.cz>
Subject: Re: [PATCH 8/9] HID: move apple quirks

Hi Jiri,

> Move them from core code to separate driver.

<snip>

> +#if defined(CONFIG_BT_HIDP) || defined(CONFIG_BT_HIDP_MODULE)
> +	/* Apple wireless Mighty Mouse */
> +	{ HID_BT_DEVICE(USB_VENDOR_ID_APPLE, 0x030c),
> +		.driver_data = APPLE_MIGHTYMOUSE | APPLE_INVERT_HWHEEL },
> +#endif

why do we have to have this within #ifdefs. The HID_BLUETOOTH_DEVICE
should work even without Bluetooth compiled. It depends only on having
the BUS_BLUETOOTH present. In theory we could have a different Bluetooth
stack providing BUS_BLUETOOTH devices (like through uinput).

<snip>

> +static const struct hid_device_id hid_bt_blacklist[] = {
> +	{ HID_BT_DEVICE(USB_VENDOR_ID_APPLE, 0x030c) },
>  	{ }
>  };
>  
>  static const struct hid_device_id *hid_blacklist[] = {
>  	[BUS_USB] = hid_usb_blacklist,
> -	[BUS_BLUETOOTH] = NULL,
> +	[BUS_BLUETOOTH] = hid_bt_blacklist,
>  };

no shortcut please. Use hid_bluetooth_blacklist. And why do we need two
separate blacklists anyway. We use HID_USB_DEVICE and
HID_BLUETOOTH_DEVICE. Both carry the bus information with them.

<snip>

> diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
> index e85ff38..1e9b0d1 100644
> --- a/net/bluetooth/hidp/core.c
> +++ b/net/bluetooth/hidp/core.c
> @@ -677,27 +677,6 @@ static void hidp_close(struct hid_device *hid)
>  {
>  }
>  
> -static const struct {
> -	__u16 idVendor;
> -	__u16 idProduct;
> -	unsigned quirks;
> -} hidp_blacklist[] = {
> -	/* Apple wireless Mighty Mouse */
> -	{ 0x05ac, 0x030c, HID_QUIRK_MIGHTYMOUSE | HID_QUIRK_INVERT_HWHEEL },
> -
> -	{ }	/* Terminating entry */
> -};
> -
> -static void hidp_setup_quirks(struct hid_device *hid)
> -{
> -	unsigned int n;
> -
> -	for (n = 0; hidp_blacklist[n].idVendor; n++)
> -		if (hidp_blacklist[n].idVendor == le16_to_cpu(hid->vendor) &&
> -				hidp_blacklist[n].idProduct == le16_to_cpu(hid->product))
> -			hid->quirks = hidp_blacklist[n].quirks;
> -}
> -
>  static int hidp_parse(struct hid_device *hid)
>  {
>  	struct hidp_session *session = hid->driver_data;
> @@ -723,7 +702,6 @@ static int hidp_parse(struct hid_device *hid)
>  
>  	session->req = NULL;
>  
> -	hidp_setup_quirks(hid);
>  	return 0;
>  }

I really like to see this go away :)

Acked-by: Marcel Holtmann <marcel@...tmann.org>

Regards

Marcel


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