linux-kernel - [PATCH 1/3] regulator: don't emit errors in {devm_}regulator_bulk

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Date:	Tue, 10 Mar 2015 00:22:06 +0100
From:	Heiko Stuebner <heiko@...ech.de>
To:	Philipp Zabel <p.zabel@...gutronix.de>, broonie@...nel.org
Cc:	David Airlie <airlied@...ux.ie>, djkurtz@...omium.org,
	Yakir Yang <ykk@...k-chips.com>,
	Fabio Estevam <fabio.estevam@...escale.com>,
	dianders@...omium.org, Andy Yan <andy.yan@...k-chips.com>,
	Mark Yao <mark.yao@...k-chips.com>,
	linux-rockchip@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 1/3] regulator: don't emit errors in {devm_}regulator_bulk_get when defering

When {devm_}regulator_get returns -EPROBE_DEFER the driver in question will
try probing again at a later time. So don't spam the log with failure messages
as this is an expected result of probe ordering.

Signed-off-by: Heiko Stuebner <heiko@...ech.de>
---
 drivers/regulator/core.c   | 5 +++--
 drivers/regulator/devres.c | 5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 52af1d7..07ca6cb 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3163,8 +3163,9 @@ int regulator_bulk_get(struct device *dev, int num_consumers,
 						      consumers[i].supply);
 		if (IS_ERR(consumers[i].consumer)) {
 			ret = PTR_ERR(consumers[i].consumer);
-			dev_err(dev, "Failed to get supply '%s': %d\n",
-				consumers[i].supply, ret);
+			if (ret != -EPROBE_DEFER)
+				dev_err(dev, "Failed to get supply '%s': %d\n",
+					consumers[i].supply, ret);
 			consumers[i].consumer = NULL;
 			goto err;
 		}
diff --git a/drivers/regulator/devres.c b/drivers/regulator/devres.c
index 6ec1d40..78e460d 100644
--- a/drivers/regulator/devres.c
+++ b/drivers/regulator/devres.c
@@ -168,8 +168,9 @@ int devm_regulator_bulk_get(struct device *dev, int num_consumers,
 							   consumers[i].supply);
 		if (IS_ERR(consumers[i].consumer)) {
 			ret = PTR_ERR(consumers[i].consumer);
-			dev_err(dev, "Failed to get supply '%s': %d\n",
-				consumers[i].supply, ret);
+			if (ret != -EPROBE_DEFER)
+				dev_err(dev, "Failed to get supply '%s': %d\n",
+					consumers[i].supply, ret);
 			consumers[i].consumer = NULL;
 			goto err;
 		}
-- 
2.1.4


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