From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754848Ab2GKCGm (ORCPT ); Tue, 10 Jul 2012 22:06:42 -0400 Received: from mail-gg0-f174.google.com ([209.85.161.174]:46385 "EHLO mail-gg0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754606Ab2GKCGl (ORCPT ); Tue, 10 Jul 2012 22:06:41 -0400 Message-ID: <1341972394.25495.3.camel@phoenix> Subject: [PATCH] mfd: Remove unneeded io_mutex from struct twl6040 From: Axel Lin To: SamuelOrtiz Cc: Peter Ujfalusi , Misael Lopez Cruz , linux-kernel@vger.kernel.org Date: Wed, 11 Jul 2012 10:06:34 +0800 Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Current code has been converted to use regmap APIs, the io_mutex is not needed. Thus remove the io_mutex. Signed-off-by: Axel Lin --- drivers/mfd/twl6040-core.c | 23 +++-------------------- include/linux/mfd/twl6040.h | 1 - 2 files changed, 3 insertions(+), 21 deletions(-) diff --git a/drivers/mfd/twl6040-core.c b/drivers/mfd/twl6040-core.c index 4ded9e7..5f620ae 100644 --- a/drivers/mfd/twl6040-core.c +++ b/drivers/mfd/twl6040-core.c @@ -64,19 +64,15 @@ int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) int ret; unsigned int val; - mutex_lock(&twl6040->io_mutex); /* Vibra control registers from cache */ if (unlikely(reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR)) { val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)]; } else { ret = regmap_read(twl6040->regmap, reg, &val); - if (ret < 0) { - mutex_unlock(&twl6040->io_mutex); + if (ret < 0) return ret; - } } - mutex_unlock(&twl6040->io_mutex); return val; } @@ -86,12 +82,10 @@ int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) { int ret; - mutex_lock(&twl6040->io_mutex); ret = regmap_write(twl6040->regmap, reg, val); /* Cache the vibra control registers */ if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR) twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val; - mutex_unlock(&twl6040->io_mutex); return ret; } @@ -99,23 +93,13 @@ EXPORT_SYMBOL(twl6040_reg_write); int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) { - int ret; - - mutex_lock(&twl6040->io_mutex); - ret = regmap_update_bits(twl6040->regmap, reg, mask, mask); - mutex_unlock(&twl6040->io_mutex); - return ret; + return regmap_update_bits(twl6040->regmap, reg, mask, mask); } EXPORT_SYMBOL(twl6040_set_bits); int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) { - int ret; - - mutex_lock(&twl6040->io_mutex); - ret = regmap_update_bits(twl6040->regmap, reg, mask, 0); - mutex_unlock(&twl6040->io_mutex); - return ret; + return regmap_update_bits(twl6040->regmap, reg, mask, 0); } EXPORT_SYMBOL(twl6040_clear_bits); @@ -573,7 +557,6 @@ static int __devinit twl6040_probe(struct i2c_client *client, twl6040->irq = client->irq; mutex_init(&twl6040->mutex); - mutex_init(&twl6040->io_mutex); init_completion(&twl6040->ready); twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index 6659487..dcc0e12 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -206,7 +206,6 @@ struct twl6040 { struct regmap *regmap; struct regulator_bulk_data supplies[2]; /* supplies for vio, v2v1 */ struct mutex mutex; - struct mutex io_mutex; struct mutex irq_mutex; struct mfd_cell cells[TWL6040_CELLS]; struct completion ready; -- 1.7.9.5