gpio-pca953x: fix gpio_base

gpio_base was set to 0 if no system platform data or open firmware platform data was provided. This led to conflicts, if any other gpiochip with a gpiobase of 0 was instantiated already. Setting it to -1 will automatically use the first one available. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

gpio-pca953x: fix gpio_base
gpio_base was set to 0 if no system platform data or open firmware platform data was provided. This led to conflicts, if any other gpiochip with a gpiobase of 0 was instantiated already. Setting it to -1 will automatically use the first one available. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Hartmut Knaack · Grant Likely
1 parent 78a4315872
Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff
drivers/gpio/gpio-pca953x.c
@@ -577,6 +577,7 @@
 void
 pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
 {
+	*gpio_base = -1;
 }
 #endif
...	...	@@ -577,6 +577,7 @@
577	577	void
578	578	pca953x_get_alt_pdata(struct i2c_client client, int gpio_base, int *invert)
579	579	{
	580	+ *gpio_base = -1;
580	581	}
581	582	#endif
582	583