[PATCH v6 05/17] pwm: Add device tree support

On Tue, Apr 10, 2012 at 05:06:28PM +0200, Thierry Reding wrote:

This patch adds helpers to support device tree bindings for the generic
PWM API. Device tree binding documentation for PWM controllers is also
provided.

Signed-off-by: Thierry Reding <redacted>
Acked-by: Arnd Bergmann <arnd@arndb.de>
---
Changes in v6:
- don't override error code in of_pwm_simple_xlate()
- no longer export of_pwm_request(), only pwm_get() should be used

Ok, I read this here ...

+/**
+ * of_pwm_request() - request a PWM via the PWM framework
+ * @np: device node to get the PWM from
+ * @con_id: consumer name
+ *
+ * Returns the PWM device parsed from the phandle and index specified in the
+ * "pwms" property of a device tree node or a negative error-code on failure.
+ * Values parsed from the device tree are stored in the returned PWM device
+ * object.
+ *
+ * If con_id is NULL, the first PWM device listed in the "pwms" property will
+ * be requested. Otherwise the "pwm-names" property is used to do a reverse
+ * lookup of the PWM index. This also means that the "pwm-names" property
+ * becomes mandatory for devices that look up the PWM device via the con_id
+ * parameter.
+ */
+static struct pwm_device *of_pwm_request(struct device_node *np,
+					 const char *con_id)
+{

...

+}
+EXPORT_SYMBOL(of_pwm_request);

... so this line should be removed.  Otherwise,

Reviewed-by: Shawn Guo <redacted>