From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1153886-1521807060-2-4530588319862085601 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES unknown, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521807059; b=mZvVCicrTc0/ewY/RWMD2zdCCZijgaQQw+gCU1m6lrhELIu 3qBF6dB2nBJ2qJuSSuK3a2I7mQMl55AWLRt4j+8ACus7DNiFWKJZmXeya0n32Nw5 7nAaPua+JZ4CUFRVnyzPlhFMNshkE48bNMbuV1p0NxWfWgOjyMq3e+wyNrk08HFU VUf04jM3KnOHT8IPczNRBE0Z9V2jDdcdB+M88TZvfY/36Erk7gAwCIM5JIOXTgO1 stEkqN8UPxvBfKpxMy8npCdzfs5MBzkaoGKCanfE6aQ06A2Y3ACrwlfX6nPWEsch a9mHXAnt0w6aY5jP4GgIA+EfF8WShCZ1cEj2eHg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521807059; bh=oi55sPSikm6Mx+EcRW+BBw9j7T uGUDojxD2KTzdLig0=; b=ihO7B2HMbRyOtSY8RHkTcEzk+xp4+VNc5JVANiYw8r CqeAf0xwOUsq3OGBsR/8bpzBNZJwiBZf29xa+ub/4b2AOLcdK52qsZ2MQ+3sCdVq A/n//nALJ2PdYFw/ogVjbFYDKu0gFmdotB7+9PJotSFwUU9nfOhbbUi/KFYYkHxj XsfI4SZS6mPrjSfgQg1o09yqfzgYg85+AmTyP2n89GhX5LF4vZE/tV/utESsL4K+ TBFhiES7+YgpdKq+7etqon+f/7llzen+/plBhwAIcO75yP8UZLMr7L4U/DFm/3U6 OBWi4vcUxyQrJ286Kh9BeVAY2bAdBzwxCTTZ9EUX4L2g== ARC-Authentication-Results: i=1; mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753169AbeCWMKd (ORCPT ); Fri, 23 Mar 2018 08:10:33 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:35516 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752984AbeCWJ55 (ORCPT ); Fri, 23 Mar 2018 05:57:57 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrew Lunn , Jerome Brunet , "David S. Miller" , Sasha Levin Subject: [PATCH 4.15 34/84] net: phy: meson-gxl: check phy_write return value Date: Fri, 23 Mar 2018 10:53:48 +0100 Message-Id: <20180323095417.060448025@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323095411.913234798@linuxfoundation.org> References: <20180323095411.913234798@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jerome Brunet [ Upstream commit 9042b46eda33ef5db3cdfc9e12b3c8cabb196141 ] Always check phy_write return values. Better to be safe than sorry Reviewed-by: Andrew Lunn Signed-off-by: Jerome Brunet Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/phy/meson-gxl.c | 50 +++++++++++++++++++++++++++++++++----------- 1 file changed, 38 insertions(+), 12 deletions(-) --- 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; }