Device node at /dev/tty* not getting created for uart serial driver

[Manavendra Nath Manav]

On Sat, Nov 24, 2012 at 2:20 PM, Manavendra Nath Manav <mnm.kernel at gmail.com
> wrote:

> Hi RK
>
> On Sat, Nov 24, 2012 at 2:03 PM, Manavendra Nath Manav <
> mnm.kernel at gmail.com> wrote:
>
>> I have written a simple UART serial driver in embedded Linux running
>> busybox with mdev rules. I have provided .dev_name as "ttyC2C" in my
>> driver code.
>>
>> static struct uart_driver serial_omap_reg = {
>>    .owner      = THIS_MODULE,
>>    .driver_name   = "Omap-C2C-Serial",
>>    .dev_name   = "ttyC2C",
>>    .nr      = OMAP_MAX_HSUART_PORTS,
>>    .cons    = NULL,
>> };
>>
>> However the node is getting created in
>>
>> ./sys/devices/platform/omap_c2c_uart.0/tty/ttyC2C0
>> ./sys/class/tty/ttyC2C0
>>
>> / # ls -l ./sys/class/tty/ttyC2C0
>> lrwxrwxrwx    1 root     0                0 Jan  1 00:14 ./sys/class/tty/ttyC2C0 -> ../../devices/platform/omap_c2c_uart.0/tty/ttyC2C0
>>
>> / # ls -l ./sys/devices/platform/omap_c2c_uart.0/tty/ttyC2C0
>> -r--r--r--    1 root     0             4096 Jan  1 00:14 dev
>> lrwxrwxrwx    1 root     0                0 Jan  1 00:14 device -> ../../../omap_c2c_uart.0
>> drwxr-xr-x    2 root     0                0 Jan  1 00:14 power
>> lrwxrwxrwx    1 root     0                0 Jan  1 00:14 subsystem -> ../../../../../class/tty
>> -rw-r--r--    1 root     0             4096 Jan  1 00:14 uevent
>> / #
>>
>> The mdev rules for tty are:
>>
>> tty 0:5 0666
>> tty.* 0:0 0620
>>
>> How to get device node as /dev/ttyC2C ?
>> --
>> Manavendra Nath Manav
>>
>
> can you help me on following issue?
>
> --
> Manavendra Nath Manav
>

In "Essential Linux Device Drivers" book, it says that that the driver name
in "struct platform_driver" and "struct uart_driver" should be same. I
modified the code according but still /dev/ttyC2C node is not being
populated.

-- 
Manavendra Nath Manav
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