spi->dev.parent = &master->dev;
spi->dev.bus = &spi_bus_type;
spi->dev.release = spidev_release;
- spi->cs_gpio = -EINVAL;
+ spi->cs_gpio = -ENOENT;
device_initialize(&spi->dev);
return spi;
}
nb = of_gpio_named_count(np, "cs-gpios");
master->num_chipselect = max(nb, (int)master->num_chipselect);
- if (nb < 1)
+ /* Return error only for an incorrectly formed cs-gpios property */
+ if (nb == 0 || nb == -ENOENT)
return 0;
+ else if (nb < 0)
+ return nb;
cs = devm_kzalloc(&master->dev,
sizeof(int) * master->num_chipselect,
return -ENOMEM;
for (i = 0; i < master->num_chipselect; i++)
- cs[i] = -EINVAL;
+ cs[i] = -ENOENT;
for (i = 0; i < nb; i++)
cs[i] = of_get_named_gpio(np, "cs-gpios", i);