linux-kernel - [Patch 1/2] gpio-pca953x: fix gpio

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Date:	Tue, 11 Oct 2011 00:22:45 +0200
From:	Hartmut Knaack <knaack.h@....de>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	linux-kernel@...r.kernel.org
Subject: [Patch 1/2] gpio-pca953x: fix gpio_base and add verbosity

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@....de>
-------------------------------------------------------------
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index c43b8ff..ae479fd 100644
--- 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
 

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