linux-kernel - Applied "regulator: qcom_spmi: Keep trying to add regulators if read fails" to the regulator tree

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Date:	Tue, 29 Mar 2016 00:39:04 -0700
From:	Mark Brown <broonie@...nel.org>
To:	Stephen Boyd <stephen.boyd@...aro.org>,
	Mark Brown <broonie@...nel.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Applied "regulator: qcom_spmi: Keep trying to add regulators if read fails" to the regulator tree

The patch

   regulator: qcom_spmi: Keep trying to add regulators if read fails

has been applied to the regulator tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 6ee5c04407f59122774c8da26f3ee8d6db9cec9b Mon Sep 17 00:00:00 2001
From: Stephen Boyd <stephen.boyd@...aro.org>
Date: Fri, 25 Mar 2016 14:35:09 -0700
Subject: [PATCH] regulator: qcom_spmi: Keep trying to add regulators if read
 fails

On some designs, a handful of the regulators can't be read via
SPMI transactions because they're "secure" and not intended to be
touched by non-secure processors. This driver unconditionally
attempts to read the id registers of all the regulators though,
leading to probe failing and no regulators being registered.
Let's ignore any errors from failing to read the registers and
keep adding other regulators so that this driver can probe on
such devices.

Signed-off-by: Stephen Boyd <stephen.boyd@...aro.org>
Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/regulator/qcom_spmi-regulator.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
index 07689fd0c0b0..3550f7f7c2eb 100644
--- a/drivers/regulator/qcom_spmi-regulator.c
+++ b/drivers/regulator/qcom_spmi-regulator.c
@@ -1201,7 +1201,7 @@ static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type)
 	ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version,
 		ARRAY_SIZE(version));
 	if (ret) {
-		dev_err(vreg->dev, "could not read version registers\n");
+		dev_dbg(vreg->dev, "could not read version registers\n");
 		return ret;
 	}
 	dig_major_rev	= version[SPMI_COMMON_REG_DIG_MAJOR_REV
@@ -1624,7 +1624,7 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)

 		ret = spmi_regulator_match(vreg, reg->force_type);
 		if (ret)
-			goto err;
+			continue;

 		config.dev = dev;
 		config.driver_data = vreg;
-- 
2.8.0.rc3