linux-kernel - [PATCH v1 1/1] x86/platform/intel-mid: Mark regulators explicitly defined

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Date:	Sat,  9 Jul 2016 16:45:29 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H . Peter Anvin" <hpa@...or.com>, x86@...nel.org
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] x86/platform/intel-mid: Mark regulators explicitly defined

Intel MID platforms are using explicitly defined regulators.

Let regulator core know that we do not have any additional
regulators left. This lets it substitute unprovided regulators with
dummy ones.

Without this change when CONFIG_REGULATOR=y the USB driver fails on getting
"vbus" regulator and SDHCI can't get "vmmc" and "vqmmc" regulators either.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 arch/x86/platform/intel-mid/intel-mid.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c
index 90bb997..ad10fce 100644
--- a/arch/x86/platform/intel-mid/intel-mid.c
+++ b/arch/x86/platform/intel-mid/intel-mid.c
@@ -16,6 +16,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
+#include <linux/regulator/machine.h>
 #include <linux/scatterlist.h>
 #include <linux/sfi.h>
 #include <linux/irq.h>
@@ -144,6 +145,15 @@ static void intel_mid_arch_setup(void)
 out:
 	if (intel_mid_ops->arch_setup)
 		intel_mid_ops->arch_setup();
+
+	/*
+	 * Intel MID platforms are using explicitly defined regulators.
+	 *
+	 * Let regulator core know that we do not have any additional
+	 * regulators left. This lets it substitute unprovided regulators with
+	 * dummy ones.
+	 */
+	regulator_has_full_constraints();
 }
 
 /* MID systems don't have i8042 controller */
-- 
2.8.1