[PATCH 1/4] gpiolib: Add gpiochip_find_by_name() and gpio_find_by_chip_name()

* Tony Lindgren [off-list ref] [120302 08:31]:

* Grant Likely [off-list ref] [120302 01:00]:

quoted

On Thu, 01 Mar 2012 10:55:24 -0800, Tony Lindgren [off-list ref] wrote:

quoted

+
+/**
+ * gpiochip_find_by_name() - iterator for locating a gpio_chip by name
+ * @name: name of the gpio_chip
+ *
+ * Similar to bus_find_device_by_name. It returns a reference to the
+ * first gpio_chip with matching name. It ignores NULL and empty names.
+ * If you need to do something more complex, then use gpiochip_find.
+ */
+struct gpio_chip *gpiochip_find_by_name(const char *name)
+{
+	if (!name || !strcmp(name, ""))
+		return NULL;
+
+	return gpiochip_find((void *)name, match_name);

Nasty cast.  Can the signature for gpiochip_find be changed to accept
a (const void *)?

I think so, this too comes from the bus code.

Looks like it can't be const as of_node_to_gpiochip uses it with
a struct device_node * that for of_get_named_gpio_flags comes from
of_parse_phandle_with_args.

Regards,

Tony