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gpio: 74x164: Make use of device properties

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ACPI-enabled platforms can use this device via unified device
properties API. Convert driver to support this.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Andy Shevchenko 2019-03-25 15:47:46 +02:00 committed by Bartosz Golaszewski
parent 6e4484ee35
commit 3c7469514d
1 changed files with 4 additions and 4 deletions
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8
drivers/gpio/gpio-74x164.c
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@ -14,6 +14,7 @@
#include <linux/spi/spi.h> #include <linux/spi/spi.h>
#include <linux/gpio/driver.h> #include <linux/gpio/driver.h>
#include <linux/gpio/consumer.h> #include <linux/gpio/consumer.h>
#include <linux/property.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/module.h> #include <linux/module.h>
@ -116,10 +117,9 @@ static int gen_74x164_probe(struct spi_device *spi)
if (ret < 0) if (ret < 0)
return ret; return ret;
if (of_property_read_u32(spi->dev.of_node, "registers-number", ret = device_property_read_u32(&spi->dev, "registers-number", &nregs);
&nregs)) { if (ret) {
dev_err(&spi->dev, dev_err(&spi->dev, "Missing 'registers-number' property.\n");
"Missing registers-number property in the DT.\n");
return -EINVAL; return -EINVAL;
} }