#include <linux/errno.h>
#include <linux/mutex.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/spi/spi.h>
#include <linux/spi/spidev.h>
struct spidev_data *spidev;
int status = -ENXIO;
+ lock_kernel();
mutex_lock(&device_list_lock);
list_for_each_entry(spidev, &device_list, device_entry) {
pr_debug("spidev: nothing for minor %d\n", iminor(inode));
mutex_unlock(&device_list_lock);
+ unlock_kernel();
return status;
}
struct device *dev;
spidev->devt = MKDEV(SPIDEV_MAJOR, minor);
- dev = device_create(spidev_class, &spi->dev, spidev->devt,
+ dev = device_create_drvdata(spidev_class, &spi->dev,
+ spidev->devt, spidev,
"spidev%d.%d",
spi->master->bus_num, spi->chip_select);
status = IS_ERR(dev) ? PTR_ERR(dev) : 0;
}
if (status == 0) {
set_bit(minor, minors);
- spi_set_drvdata(spi, spidev);
list_add(&spidev->device_entry, &device_list);
}
mutex_unlock(&device_list_lock);