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[v2,14/22] pwm: Probe PWM chip devices on demand

Message ID 1438089593-7696-15-git-send-email-tomeu.vizoso@collabora.com (mailing list archive)
State New, archived
Headers show

Commit Message

Tomeu Vizoso July 28, 2015, 1:19 p.m. UTC 
When looking up a PWM chip through its firmware node, probe it if it
hasn't already.

The goal is to reduce deferred probes to a minimum, as it makes it very
cumbersome to find out why a device failed to probe, and can introduce
very big delays in when a critical device is probed.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---

Changes in v2: None

 drivers/pwm/core.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 3a7769fe53de..4727cbf69d96 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -496,6 +496,8 @@  static struct pwm_chip *of_node_to_pwmchip(struct device_node *np)
 {
 	struct pwm_chip *chip;
 
+	fwnode_ensure_device(&np->fwnode);
+
 	mutex_lock(&pwm_lock);
 
 	list_for_each_entry(chip, &pwm_chips, list)