linux-kernel - [PATCH 3/7] staging: typec: fusb302: Fix chip->vbus

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Date:   Tue,  9 May 2017 09:04:55 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Yueyao Zhu <yueyao.zhu@...il.com>, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 3/7] staging: typec: fusb302: Fix chip->vbus_present init value

From: Yueyao Zhu <yueyao.zhu@...il.com>

FUSB_REG_STATUS0 & FUSB_REG_STATUS0_VBUSOK = 0x40 & 0x80 is always
zero. Fix the code to what it is intended to be: check the VBUSOK
bit of the value read from address FUSB_REG_STATUS0.

Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Cc: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Yueyao Zhu <yueyao.zhu@...il.com>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 drivers/staging/typec/fusb302/fusb302.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/typec/fusb302/fusb302.c b/drivers/staging/typec/fusb302/fusb302.c
index aa460f93a293..d8b50b49bb2d 100644
--- a/drivers/staging/typec/fusb302/fusb302.c
+++ b/drivers/staging/typec/fusb302/fusb302.c
@@ -489,7 +489,7 @@ static int tcpm_init(struct tcpc_dev *dev)
 	ret = fusb302_i2c_read(chip, FUSB_REG_STATUS0, &data);
 	if (ret < 0)
 		return ret;
-	chip->vbus_present = !!(FUSB_REG_STATUS0 & FUSB_REG_STATUS0_VBUSOK);
+	chip->vbus_present = !!(data & FUSB_REG_STATUS0_VBUSOK);
 	ret = fusb302_i2c_read(chip, FUSB_REG_DEVICE_ID, &data);
 	if (ret < 0)
 		return ret;
-- 
2.7.4