linux-kernel - 答复: [PATCH 2/2] iio:filter:admv8818: Fix missing clk_disable_unprepare() in admv8818_clk

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Date:   Fri, 18 Mar 2022 03:29:50 +0000
From:   "Wangshaobo (bobo)" <bobo.shaobowang@...wei.com>
To:     unlisted-recipients:; (no To-header on input)
CC:     "chengjian (D)" <cj.chengjian@...wei.com>,
        "liwei (GF)" <liwei391@...wei.com>,
        "antoniu.miclaus@...log.com" <antoniu.miclaus@...log.com>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "jic23@...nel.org" <jic23@...nel.org>,
        Jonathan Cameron <jonathan.cameron@...wei.com>,
        "Wangshaobo (bobo)" <bobo.shaobowang@...wei.com>
Subject: 答复: [PATCH 2/2] iio:filter:admv8818: Fix missing clk_disable_unprepare() in admv8818_clk_setup


-----邮件原件-----
发件人: Wangshaobo (bobo) 
发送时间: 2022年3月18日 10:59
抄送: chengjian (D) <cj.chengjian@...wei.com>; liwei (GF) <liwei391@...wei.com>; Wangshaobo (bobo) <bobo.shaobowang@...wei.com>; antoniu.miclaus@...log.com; linux-iio@...r.kernel.org; linux-kernel@...r.kernel.org; jic23@...nel.org; Jonathan Cameron <jonathan.cameron@...wei.com>
主题: [PATCH 2/2] iio:filter:admv8818: Fix missing clk_disable_unprepare() in admv8818_clk_setup

Fix missing clk_disable_unprepare() before return from admv8818_clk_setup in the error handling cases.

Fixes: f34fe888ad05 ("iio:filter:admv8818: add support for ADMV8818")
Signed-off-by: Wang ShaoBo <bobo.shaobowang@...wei.com>
---
 drivers/iio/filter/admv8818.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/filter/admv8818.c b/drivers/iio/filter/admv8818.c index 68de45fe21b4..acb436efd8b5 100644
--- a/drivers/iio/filter/admv8818.c
+++ b/drivers/iio/filter/admv8818.c
@@ -590,14 +590,22 @@ static int admv8818_clk_setup(struct admv8818_state *st)
 
 	ret = devm_add_action_or_reset(&spi->dev, admv8818_clk_disable, st);
 	if (ret)
-		return ret;
+		goto out_clk_disable;

admv8818_clk_disable() would do clk_disable_unprepare(), so clk_disable_unprepare() is not needed after
devm_add_action_or_reset(),there is no problem in this function.

this patch is not needed anymore.

-- wangshaobo