gpio-pca953x: fix gpio_base

Hartmut Knaack · glikely · commit 25fcf2b7f1f6 · 2011-10-13T13:49:37.000-06:00
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 &lt;knaack.h@gmx.de&gt;
Signed-off-by: Grant Likely &lt;grant.likely@secretlab.ca&gt;
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
@@ -577,6 +577,7 @@ pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
 void
 pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
 {
+	*gpio_base = -1;
 }
 #endif
 

Original file line number	Diff line number	Diff line change
`@@ -577,6 +577,7 @@ pca953x_get_alt_pdata(struct i2c_client client, int gpio_base, int *invert)`
`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`