[PATCH 14/21] pwm: Probe PWM chip devices on demand

Tomeu Vizoso
2015-05-25T15:01:57Z

When looking up a PWM chip through its DT node, ensure that the
corresponding device has been registered.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
drivers/pwm/core.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index ba34c7d..31f486c 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -24,6 +24,7 @@
#include <linux/radix-tree.h>
#include <linux/list.h>
#include <linux/mutex.h>
+#include <linux/of_platform.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/device.h>
@@ -479,6 +480,8 @@ static struct pwm_chip *of_node_to_pwmchip(struct device_node *np)
{
struct pwm_chip *chip;

+ of_platform_device_ensure(np);
+
mutex_lock(&pwm_lock);

list_for_each_entry(chip, &pwm_chips, list)
--
2.4.1