linux-kernel - [PATCH] regulator: ab8500: Fix get

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Date:	Mon, 08 Apr 2013 20:31:14 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Bengt Jonsson <bengt.g.jonsson@...ricsson.com>,
	Lee Jones <lee.jones@...aro.org>,
	Yvan FILLION <yvan.fillion@...ricsson.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] regulator: ab8500: Fix get_mode for shared mode regulators

The special handling code for getting shared mode status is wrong
because it needs to check info->shared_mode->lp_mode_req for
both regulators that shared the same mode register.

In set_mode(), current code ensures we won't set mode to REGULATOR_MODE_IDLE
if only one of the regulator requests to set idle.

In get_mode(), we can just remove the special handling code for shared mode.
Read the register value always returns correct status no matter the regulator
has shared mode register or not.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/regulator/ab8500.c |    8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 9ebd131..acdffc5 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -456,14 +456,6 @@ static unsigned int ab8500_regulator_get_mode(struct regulator_dev *rdev)
 		return -EINVAL;
 	}
 
-	/* Need special handling for shared mode */
-	if (info->shared_mode) {
-		if (info->shared_mode->lp_mode_req)
-			return REGULATOR_MODE_IDLE;
-		else
-			return REGULATOR_MODE_NORMAL;
-	}
-
 	if (info->mode_mask) {
 		/* Dedicated register for handling mode */
 		ret = abx500_get_register_interruptible(info->dev,
-- 
1.7.10.4



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