[Buildroot] can not open ttyUSB0

[Gustavo Zacarias]

On 01/30/2013 05:59 AM, Adeel Nafis wrote:

> scsi 4:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0
> ANSI: 2
> scsi 5:0:0:0: Direct-Access     HUAWEI   MMC Storage      2.31 PQ: 0
> ANSI: 2
> usb-storage: device scan complete
> sd 5:0:0:0: Attached scsi removable disk sda
> usb-storage: device scan complete
> 
> there is no symlink for /sys/class/tty/ttyUSB0, so I guess this
> indicates that there is a missing driver, but which one? I have also
> tried doing the following
> 
> modprobe usbserial vendor=0x12d1 product=0x1446
> 
> but it makes no difference.

Huawei modems usually require the "option" module in the kernel
(CONFIG_USB_SERIAL_OPTION). Do you have it enabled and loaded?
Regards.