Protocol driver probe function never invoked

[llandre <r&d2-4VKA1VU3ct/j+vYz1yj4TQ@public.gmane.org>]

Hi all,

I'm working with kernel 2.6.21.3 on Freescale iMXL-based platform.
I have to write a SPI protocol driver for Quantum QT510 touch controller.
As starting point for board-init code I used the driver released by 
Pavel Pisa:
http://rtime.felk.cvut.cz/repos/ppisa-linux-devel/kernel-patches/current/pimx1-board-spi.patch

In protocol driver I defined spi_driver like this:

static struct spi_driver qt510_driver = {
	.driver = {
		.name		= QT510_MODALIAS,
		.owner		= THIS_MODULE,
	},
	.probe		= qt510_probe,
	.remove		= __devexit_p(qt510_remove),
};

static int __init qt510_init(void)
{
	return spi_register_driver(&qt510_driver);
}
module_init(qt510_init);


In board-init code I used the same name for modalias field:


static struct spi_board_info parsy_spi_board_infos[] __initdata = {
	{
	 .modalias = "loopback",
	 .max_speed_hz = 1600000,
	 .bus_num = 1,
	 .chip_select = 0x00,
	 .mode = SPI_MODE_0,
	 .controller_data = &spi_controller_data[0],
	 },
	{
	 .modalias = QT510_MODALIAS,
	 .max_speed_hz = QT510_SPI_CLK_MAX,
	 .bus_num = 1,
	 .chip_select = 0x01,
	 .mode = SPI_MODE_3,
	 .controller_data = &spi_controller_data[1],
	 },
	{
	 .modalias = "tbd",
	 .max_speed_hz = 1600000,
	 .bus_num = 1,
	 .chip_select = 0x2,
	 .mode = SPI_MODE_0,
	 .controller_data = &spi_controller_data[2],
	 },
};


However the probe function (qt510_probe) is never invoked.
In my understanding this is due to the fact that there are no devices 
associated to the bus:

bash-3.00# ls -la /sys/bus/spi/devices/
total 0
drwxr-xr-x  2 root root 0 Jan  1  1970 .
drwxr-xr-x  4 root root 0 Jan  1  1970 ..
bash-3.00# ls -la /sys/bus/spi/drivers/
total 0
drwxr-xr-x  4 root root 0 Jan  1  1970 .
drwxr-xr-x  4 root root 0 Jan  1  1970 ..
drwxr-xr-x  2 root root 0 Jan  1  1970 qt510
drwxr-xr-x  2 root root 0 Jan  1  1970 spidev
bash-3.00#

Am I missing something?

TIA,
llandre

DAVE Electronics System House - R&D Department
web:   http://www.dave-tech.it
email: r&d2-4VKA1VU3ct/j+vYz1yj4TQ@public.gmane.org

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