How is it possible to build a loadable module from _spi-altera.c_ when
it has no code for creating _udev_ files (i.e., _/dev/spidevXX_); it has
no:
static int __init spidev_init(void)
{
int status;
printk(KERN_ALERT "DEBUG: Passed %s %d \n", __FUNCTION__, __LINE__);
/* Claim our 256 reserved device numbers. Then register a class
* that will key udev/mdev to add/remove /dev nodes. Last, register
* the driver which manages those device numbers.
*/
BUILD_BUG_ON(N_SPI_MINORS > 256);
status = register_chrdev(SPIDEV_MAJOR, "spi", &spidev_fops);
printk(KERN_ALERT "DEBUG: Passed %s %d \n", __FUNCTION__, __LINE__);
if (status < 0)
return status;
printk(KERN_ALERT "DEBUG: Passed %s %d \n", __FUNCTION__, __LINE__);
spidev_class = class_create(THIS_MODULE, "spidev");
if (IS_ERR(spidev_class)) {
unregister_chrdev(SPIDEV_MAJOR, spidev_spi_driver.driver.name);
return PTR_ERR(spidev_class);
}
printk(KERN_ALERT "DEBUG: Passed %s %d \n", __FUNCTION__, __LINE__);
status = spi_register_driver(&spidev_spi_driver);
if (status < 0) {
class_destroy(spidev_class);
unregister_chrdev(SPIDEV_MAJOR, spidev_spi_driver.driver.name);
}
printk(KERN_ALERT "DEBUG: Passed %s %d \n", __FUNCTION__, __LINE__);
return status;
}
module_init(spidev_init);
The _printk_'s are of course mine.
---John
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