[PATCH] Apply OPTION_BLACKLIST_SENDSETUP also for ZTE MF626

Tim Gardner tim.gardner at canonical.com
Wed Mar 9 09:45:00 UTC 2011


On 03/09/2011 09:19 AM, Herton Ronaldo Krzesinski wrote:
> On https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636091, one of
> the cases reported is a big timeout on option_send_setup, which causes
> some side effects as tty_lock is held. Looks like some of ZTE MF626
> devices also don't like the RTS/DTR setting in option_send_setup, like
> with 4G XS Stick W14. The reporter confirms which this it solves the
> long freezes in his system.
>
> Signed-off-by: Herton Ronaldo Krzesinski<herton.krzesinski at canonical.com>
> ---
>   drivers/usb/serial/option.c |    3 ++-
>   1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
> index 5f46838..75c7f45 100644
> --- a/drivers/usb/serial/option.c
> +++ b/drivers/usb/serial/option.c
> @@ -652,7 +652,8 @@ static const struct usb_device_id option_ids[] = {
>   	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0028, 0xff, 0xff, 0xff) },
>   	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0029, 0xff, 0xff, 0xff) },
>   	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0030, 0xff, 0xff, 0xff) },
> -	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626, 0xff, 0xff, 0xff) },
> +	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626, 0xff,
> +	  0xff, 0xff), .driver_info = (kernel_ulong_t)&four_g_w14_blacklist },
>   	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0032, 0xff, 0xff, 0xff) },
>   	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0033, 0xff, 0xff, 0xff) },
>   	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0034, 0xff, 0xff, 0xff) },

Don't forget to nominate this patch for stable where appropriate. You 
might also have to provide backported patches for some kernel versions.

rtg
-- 
Tim Gardner tim.gardner at canonical.com



More information about the kernel-team mailing list