linux-kernel - [PATCH 3.16.y-ckt 010/183] ARM: pxa: add regulator_has_full

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Message-Id: <1425635874-19087-11-git-send-email-luis.henriques@canonical.com>
Date:	Fri,  6 Mar 2015 09:55:01 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 010/183] ARM: pxa: add regulator_has_full_constraints to poodle board file

3.16.7-ckt8 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>

commit 9bc78f32c2e430aebf6def965b316aa95e37a20c upstream.

Add regulator_has_full_constraints() call to poodle board file to let
regulator core know that we do not have any additional regulators left.
This lets it substitute unprovided regulators with dummy ones.

This fixes the following warnings that can be seen on poodle if
regulators are enabled:

ads7846 spi1.0: unable to get regulator: -517
spi spi1.0: Driver ads7846 requests probe deferral
wm8731 0-001b: Failed to get supply 'AVDD': -517
wm8731 0-001b: Failed to request supplies: -517
wm8731 0-001b: ASoC: failed to probe component -517

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
Acked-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 arch/arm/mach-pxa/poodle.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index 131991629116..e81d216b05e4 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -25,6 +25,7 @@
 #include <linux/gpio.h>
 #include <linux/i2c.h>
 #include <linux/i2c/pxa-i2c.h>
+#include <linux/regulator/machine.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 #include <linux/spi/pxa2xx_spi.h>
@@ -455,6 +456,7 @@ static void __init poodle_init(void)
 	pxa_set_i2c_info(NULL);
 	i2c_register_board_info(0, ARRAY_AND_SIZE(poodle_i2c_devices));
 	poodle_init_spi();
+	regulator_has_full_constraints();
 }
 
 static void __init fixup_poodle(struct tag *tags, char **cmdline)
--
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