mfd: rtsx: Prevent 'used uninitialised' warnings

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]

Tested-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/rtl8411.c b/drivers/mfd/rtl8411.c
index 5280135..1ee8675 100644 (file)
--- 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);