From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933751AbdLRJsR (ORCPT ); Mon, 18 Dec 2017 04:48:17 -0500 Received: from mail-wm0-f65.google.com ([74.125.82.65]:37997 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758384AbdLRJoy (ORCPT ); Mon, 18 Dec 2017 04:44:54 -0500 X-Google-Smtp-Source: ACJfBovyxS8qw1c0+k7XsHtvYhmaXs6H/w8IWvatCYZPwTZT6JpBSS34nyBxKQ8q5CSTWFF1Fj9vUg== From: Jerome Brunet To: Andrew Lunn , Florian Fainelli Cc: Jerome Brunet , Kevin Hilman , netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v3 1/7] net: phy: meson-gxl: check phy_write return value Date: Mon, 18 Dec 2017 10:44:40 +0100 Message-Id: <20171218094446.31912-2-jbrunet@baylibre.com> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20171218094446.31912-1-jbrunet@baylibre.com> References: <20171218094446.31912-1-jbrunet@baylibre.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Always check phy_write return values. Better to be safe than sorry Reviewed-by: Andrew Lunn Signed-off-by: Jerome Brunet --- drivers/net/phy/meson-gxl.c | 50 ++++++++++++++++++++++++++++++++++----------- 1 file changed, 38 insertions(+), 12 deletions(-) diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c index 4ee630afe43a..900606204c0a 100644 --- a/drivers/net/phy/meson-gxl.c +++ b/drivers/net/phy/meson-gxl.c @@ -26,27 +26,53 @@ static int meson_gxl_config_init(struct phy_device *phydev) { + int ret; + /* Enable Analog and DSP register Bank access by */ - phy_write(phydev, 0x14, 0x0000); - phy_write(phydev, 0x14, 0x0400); - phy_write(phydev, 0x14, 0x0000); - phy_write(phydev, 0x14, 0x0400); + ret = phy_write(phydev, 0x14, 0x0000); + if (ret) + return ret; + ret = phy_write(phydev, 0x14, 0x0400); + if (ret) + return ret; + ret = phy_write(phydev, 0x14, 0x0000); + if (ret) + return ret; + ret = phy_write(phydev, 0x14, 0x0400); + if (ret) + return ret; /* Write Analog register 23 */ - phy_write(phydev, 0x17, 0x8E0D); - phy_write(phydev, 0x14, 0x4417); + ret = phy_write(phydev, 0x17, 0x8E0D); + if (ret) + return ret; + ret = phy_write(phydev, 0x14, 0x4417); + if (ret) + return ret; /* Enable fractional PLL */ - phy_write(phydev, 0x17, 0x0005); - phy_write(phydev, 0x14, 0x5C1B); + ret = phy_write(phydev, 0x17, 0x0005); + if (ret) + return ret; + ret = phy_write(phydev, 0x14, 0x5C1B); + if (ret) + return ret; /* Program fraction FR_PLL_DIV1 */ - phy_write(phydev, 0x17, 0x029A); - phy_write(phydev, 0x14, 0x5C1D); + ret = phy_write(phydev, 0x17, 0x029A); + if (ret) + return ret; + ret = phy_write(phydev, 0x14, 0x5C1D); + if (ret) + return ret; /* Program fraction FR_PLL_DIV1 */ - phy_write(phydev, 0x17, 0xAAAA); - phy_write(phydev, 0x14, 0x5C1C); + ret = phy_write(phydev, 0x17, 0xAAAA); + if (ret) + return ret; + ret = phy_write(phydev, 0x14, 0x5C1C); + if (ret) + return ret; return 0; } -- 2.14.3