linux-kernel - [PATCH net-next 4/7] net: phy: bcm84881: use phy_read_mmd_poll

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Message-Id: <20200319163910.14733-5-zhengdejin5@gmail.com>
Date:   Fri, 20 Mar 2020 00:39:07 +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, tglx@...utronix.de,
        broonie@...nel.org, corbet@....net, mchehab+samsung@...nel.org,
        netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Dejin Zheng <zhengdejin5@...il.com>
Subject: [PATCH net-next 4/7] net: phy: bcm84881: use phy_read_mmd_poll_timeout() to simplify the code

use phy_read_mmd_poll_timeout() to replace the poll codes for
simplify the code in bcm84881_wait_init() function.

Signed-off-by: Dejin Zheng <zhengdejin5@...il.com>
---
 drivers/net/phy/bcm84881.c | 24 ++++++------------------
 1 file changed, 6 insertions(+), 18 deletions(-)

diff --git a/drivers/net/phy/bcm84881.c b/drivers/net/phy/bcm84881.c
index 14d55a77eb28..c916bd0f6afa 100644
--- a/drivers/net/phy/bcm84881.c
+++ b/drivers/net/phy/bcm84881.c
@@ -22,26 +22,14 @@ enum {
 
 static int bcm84881_wait_init(struct phy_device *phydev)
 {
-	unsigned int tries = 20;
 	int ret, val;
 
-	do {
-		val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL1);
-		if (val < 0) {
-			ret = val;
-			break;
-		}
-		if (!(val & MDIO_CTRL1_RESET)) {
-			ret = 0;
-			break;
-		}
-		if (!--tries) {
-			ret = -ETIMEDOUT;
-			break;
-		}
-		msleep(100);
-	} while (1);
-
+	ret = phy_read_mmd_poll_timeout(val, val < 0 ||
+					!(val & MDIO_CTRL1_RESET), 100000,
+					2000000, phydev, MDIO_MMD_PMAPMD,
+					MDIO_CTRL1);
+	if (val < 0)
+		ret = val;
 	if (ret)
 		phydev_err(phydev, "%s failed: %d\n", __func__, ret);
 
-- 
2.25.0