linux-kernel - [PATCH] mmc: core: Remove fixed voltage regulator logic

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Date:	Tue, 22 Jul 2014 00:16:31 -0700
From:	Tim Kryger <tim.kryger@...il.com>
To:	Chris Ball <chris@...ntf.net>, Ulf Hansson <ulf.hansson@...aro.org>
Cc:	Tim Kryger <tim.kryger@...il.com>,
	Linux MMC List <linux-mmc@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] mmc: core: Remove fixed voltage regulator logic

There is no need for regulator consumers to include special logic for
fixed voltage regulators as they support regulator_set_voltage() just
like their non-fixed regulator counterparts.

Signed-off-by: Tim Kryger <tim.kryger@...il.com>
---

Since this eliminates logic that was concealing a bug in how the SDHCI
driver was setting ocr_avail, it is important that the following patch
to fix that bug be taken first.  Fortunately, it is already queued.

  https://lkml.org/lkml/2014/6/13/451

 drivers/mmc/core/core.c |    8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 7dc0c85..e56375c 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1280,15 +1280,7 @@ int mmc_regulator_set_ocr(struct mmc_host *mmc,
 			max_uV = min_uV + 100 * 1000;
 		}
 
-		/*
-		 * If we're using a fixed/static regulator, don't call
-		 * regulator_set_voltage; it would fail.
-		 */
 		voltage = regulator_get_voltage(supply);
-
-		if (!regulator_can_change_voltage(supply))
-			min_uV = max_uV = voltage;
-
 		if (voltage < 0)
 			result = voltage;
 		else if (voltage < min_uV || voltage > max_uV)
-- 
1.7.9.5

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