Update of /cvsroot/gc-linux/linux/drivers/gpio
In directory ddv4jf1.ch3.sourceforge.com:/tmp/cvs-serv751/drivers/gpio
Modified Files:
gpiolib.c
Log Message:
Merge gc-linux-v2.6.31.
Index: gpiolib.c
===================================================================
RCS file: /cvsroot/gc-linux/linux/drivers/gpio/gpiolib.c,v
retrieving revision 1.6
retrieving revision 1.7
diff -C2 -d -r1.6 -r1.7
*** gpiolib.c 25 Oct 2009 18:53:45 -0000 1.6
--- gpiolib.c 25 Oct 2009 18:59:28 -0000 1.7
***************
*** 1006,1009 ****
--- 1006,1027 ----
EXPORT_SYMBOL_GPL(gpio_direction_output);
+ /**
+ * gpio_direction_is_output - tell if a gpio is configured as an output
+ * @gpio: gpio in question
+ *
+ * Returns a negative errno if the given gpio is not valid.
+ * Returns a positive non-zero if the gpio is configured as an output.
+ * Returns zero otherwise.
+ */
+ int gpio_direction_is_output(unsigned gpio)
+ {
+ struct gpio_desc *desc = &gpio_desc[gpio];
+
+ if (!gpio_is_valid(gpio))
+ return -EINVAL;
+
+ return test_bit(FLAG_IS_OUT, &desc->flags);
+ }
+ EXPORT_SYMBOL_GPL(gpio_direction_is_output);
/* I/O calls are only valid after configuration completed; the relevant
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