From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Thu, 18 Jul 2013 11:55:22 +0000 (+0200)
Subject: reset: allow drivers to request probe deferral
X-Git-Tag: firefly_0821_release~176^2~4130^2~1^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3d10302048ab672d1e8993b8a5b50d9e35881853;p=firefly-linux-kernel-4.4.55.git

reset: allow drivers to request probe deferral

If the requested reset controller is not yet available, have reset_control_get
and device_reset return -EPROBE_DEFER so the driver can decide to request
probe deferral.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
---

diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index d1b6089a0ef8..b3d99a1477b5 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -167,7 +167,7 @@ struct reset_control *reset_control_get(struct device *dev, const char *id)
 
 	if (!rcdev) {
 		mutex_unlock(&reset_controller_list_mutex);
-		return ERR_PTR(-ENODEV);
+		return ERR_PTR(-EPROBE_DEFER);
 	}
 
 	rstc_id = rcdev->of_xlate(rcdev, &args);