linux-kernel - [PATCH v2 3/3] mfd: rtsx: prevent 'used uninitialised' warnings

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Date:	Tue, 3 Dec 2013 17:26:33 +0800
From:	<micky_ching@...lsil.com.cn>
To:	<sameo@...ux.intel.com>
CC:	<devel@...uxdriverproject.org>, <linux-kernel@...r.kernel.org>,
	<gregkh@...uxfoundation.org>, <wei_wang@...lsil.com.cn>,
	<rogerable@...ltek.com>, Micky Ching <micky_ching@...lsil.com.cn>,
	Lee Jones <lee.jones@...aro.org>
Subject: [PATCH v2 3/3] mfd: rtsx: prevent 'used uninitialised' warnings

From: Micky Ching <micky_ching@...lsil.com.cn>

drivers/mfd/rtl8411.c: In function 'rtl8411_fetch_vendor_settings':
drivers/mfd/rtl8411.c:58:7: warning: 'reg1' is used uninitialized in this function [-Wuninitialized]
drivers/mfd/rtl8411.c: In function 'rtl8411b_fetch_vendor_settings':
drivers/mfd/rtl8411.c:79:7: warning: 'reg' is used uninitialized in this function [-Wuninitialized]
drivers/mfd/rtl8411.c: In function 'rtl8411_fetch_vendor_settings':
drivers/mfd/rtl8411.c:69:26: warning: 'reg3' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Lee Jones <lee.jones@...aro.org>
Tested-by: Micky Ching <micky_ching@...lsil.com.cn>
---
 drivers/mfd/rtl8411.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/rtl8411.c b/drivers/mfd/rtl8411.c
index 4b377e3..d53ff96 100644
--- a/drivers/mfd/rtl8411.c
+++ b/drivers/mfd/rtl8411.c
@@ -49,8 +49,8 @@ static int rtl8411b_is_qfn48(struct rtsx_pcr *pcr)
 
 static void rtl8411_fetch_vendor_settings(struct rtsx_pcr *pcr)
 {
-	u32 reg1;
-	u8 reg3;
+	u32 reg1 = 0;
+	u8 reg3 = 0;
 
 	rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, &reg1);
 	dev_dbg(&(pcr->pci->dev), "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg1);
@@ -71,7 +71,7 @@ static void rtl8411_fetch_vendor_settings(struct rtsx_pcr *pcr)
 
 static void rtl8411b_fetch_vendor_settings(struct rtsx_pcr *pcr)
 {
-	u32 reg;
+	u32 reg = 0;
 
 	rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, &reg);
 	dev_dbg(&(pcr->pci->dev), "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
-- 
1.7.9.5

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