linux-kernel - Re: [USB]Add quirk for Samsung Android phone modem

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Date:	Sat, 5 Feb 2011 15:15:27 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Maciej Szmigiero <mhej@...pl>
cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Oliver Neukum <oneukum@...e.de>,
	Hans de Goede <hdegoede@...hat.com>,
	Paul Mortier <mortier@...nternet.com>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [USB]Add quirk for Samsung Android phone modem

On Sat, 5 Feb 2011, Maciej Szmigiero wrote:

> [USB]Add quirk for Samsung Android phone modem
> 
> My Galaxy Spica needs this quirk when in modem mode, otherwise
> it causes endless USB bus resets and is unusable in this mode.
> 
> Unfortunately Samsung decided to reuse ID of its old CDMA phone SGH-I500
> for the modem part.
> That's why in addition to this patch the visior driver must be prevented
> from binding to SPH-I500 ID, so ACM driver can do that.
> 
> Signed-off-by: Maciej Szmigiero <mhej@...pl>
> 
> diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
> index 44c5954..363355b 100644
> --- a/drivers/usb/core/quirks.c
> +++ b/drivers/usb/core/quirks.c
> @@ -88,6 +88,10 @@ static const struct usb_device_id usb_quirk_list[] = {
>      /* INTEL VALUE SSD */
>      { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
>  
> +    /* Samsung Android phone modem - ID conflict with SPH-I500 */
> +    { USB_DEVICE(0x04e8, 0x6601), .driver_info =
> +            USB_QUIRK_CONFIG_INTF_STRINGS },
> +
>      { }  /* terminating entry must be last */
>  };

Please follow the directions at the start of the source file: Keep the 
list ordered by vendor ID, then product ID.

Alan Stern

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