linux-kernel - [PATCH net-next v2 7/7] net: phy: use phy_read_poll

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Message-Id: <20200320133431.9354-8-zhengdejin5@gmail.com>
Date:   Fri, 20 Mar 2020 21:34:31 +0800
From:   Dejin Zheng <zhengdejin5@...il.com>
To:     andrew@...n.ch, f.fainelli@...il.com, hkallweit1@...il.com,
        linux@...linux.org.uk, davem@...emloft.net, allison@...utok.net,
        corbet@....net, alexios.zavras@...el.com, broonie@...nel.org,
        tglx@...utronix.de, mchehab+samsung@...nel.org,
        netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Dejin Zheng <zhengdejin5@...il.com>
Subject: [PATCH net-next v2 7/7] net: phy: use phy_read_poll_timeout() to simplify the code

use phy_read_poll_timeout() to replace the poll codes for
simplify the code in phy_poll_reset() function.

Signed-off-by: Dejin Zheng <zhengdejin5@...il.com>
---
v1 -> v2:
	- remove the handle of phy_read()'s return error.

 drivers/net/phy/phy_device.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index a585faf8b844..0de4f03ba90c 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1059,23 +1059,15 @@ EXPORT_SYMBOL(phy_disconnect);
 static int phy_poll_reset(struct phy_device *phydev)
 {
 	/* Poll until the reset bit clears (50ms per retry == 0.6 sec) */
-	unsigned int retries = 12;
-	int ret;
-
-	do {
-		msleep(50);
-		ret = phy_read(phydev, MII_BMCR);
-		if (ret < 0)
-			return ret;
-	} while (ret & BMCR_RESET && --retries);
-	if (ret & BMCR_RESET)
-		return -ETIMEDOUT;
+	int ret, val;
 
+	ret = phy_read_poll_timeout(val, !(val & BMCR_RESET), 50000, 600000,
+				    phydev, MII_BMCR);
 	/* Some chips (smsc911x) may still need up to another 1ms after the
 	 * BMCR_RESET bit is cleared before they are usable.
 	 */
 	msleep(1);
-	return 0;
+	return ret;
 }
 
 int phy_init_hw(struct phy_device *phydev)
-- 
2.25.0