Message ID | 20221227-v6-2-rc1-c45-seperation-v3-4-ade1deb438da@walle.cc |
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State | New |
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[2620:137:e000::1:20]) by mx.google.com with ESMTP id z3-20020a631903000000b0049bef470e05si9247818pgl.528.2023.01.09.07.37.22; Mon, 09 Jan 2023 07:37:36 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@walle.cc header.s=mail2022082101 header.b="oBe/wDiE"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=walle.cc Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231876AbjAIPcY (ORCPT <rfc822;274620705z@gmail.com> + 99 others); Mon, 9 Jan 2023 10:32:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237225AbjAIPbp (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Mon, 9 Jan 2023 10:31:45 -0500 Received: from mail.3ffe.de (0001.3ffe.de [159.69.201.130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 594D79598; Mon, 9 Jan 2023 07:30:57 -0800 (PST) Received: from mwalle01.sab.local (unknown [213.135.10.150]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.3ffe.de (Postfix) with ESMTPSA id 0282E1654; Mon, 9 Jan 2023 16:30:55 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2022082101; t=1673278255; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=cwldWyFf7CaFTxQBOBymigKCBxPFmfPQFSYXECFA1MQ=; b=oBe/wDiEGzYu9Fc30RDGqfOtePnx+5N67Jc8XWAwViJATJbP5JciHihYt08LZ2CPnqoGXm uZArpFXb8LGFjfjAjXXX7S79M2PS+79KJbqSZO69qsWKd3bzRrrLYAYIXYg6ql+KNj6eYf QFLV/7qysP76I17N9ZXUkpM8Co/fADHz8zTv8pRK0+sadsWUa23hOO8F8/TFqbhkDxEDNV Kh4IJzK9xvXaw84ecISSaMUBh90vtEkIuwjqMygFfeNX7aQTRJKU3bGSi62Qh3a0YIRJXQ PD2iEEB36IH2lBcrduXuSgnBMlXDpiUEHLj2BemVjPRj+aiM8jY7HGIZ/J1pvg== From: Michael Walle <michael@walle.cc> Date: Mon, 09 Jan 2023 16:30:44 +0100 Subject: [PATCH net-next v3 04/11] net: mdio: C22 is now optional, EOPNOTSUPP if not provided MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20221227-v6-2-rc1-c45-seperation-v3-4-ade1deb438da@walle.cc> References: <20221227-v6-2-rc1-c45-seperation-v3-0-ade1deb438da@walle.cc> In-Reply-To: <20221227-v6-2-rc1-c45-seperation-v3-0-ade1deb438da@walle.cc> To: Heiner Kallweit <hkallweit1@gmail.com>, Russell King <linux@armlinux.org.uk>, "David S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>, Jose Abreu <Jose.Abreu@synopsys.com>, Sergey Shtylyov <s.shtylyov@omp.ru>, Wei Fang <wei.fang@nxp.com>, Shenwei Wang <shenwei.wang@nxp.com>, Clark Wang <xiaoning.wang@nxp.com>, NXP Linux Team <linux-imx@nxp.com>, Sean Wang <sean.wang@mediatek.com>, Landen Chao <Landen.Chao@mediatek.com>, DENG Qingfang <dqfext@gmail.com>, Florian Fainelli <f.fainelli@gmail.com>, Vladimir Oltean <olteanv@gmail.com>, Matthias Brugger <matthias.bgg@gmail.com> Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Andrew Lunn <andrew@lunn.ch>, Geert Uytterhoeven <geert+renesas@glider.be>, Michael Walle <michael@walle.cc>, Vladimir Oltean <vladimir.oltean@nxp.com> X-Mailer: b4 0.11.1 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754559840352449343?= X-GMAIL-MSGID: =?utf-8?q?1754559840352449343?= |
Series |
net: mdio: Start separating C22 and C45
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Commit Message
Michael Walle
Jan. 9, 2023, 3:30 p.m. UTC
From: Andrew Lunn <andrew@lunn.ch> When performing a C22 operation, check that the bus driver actually provides the methods, and return -EOPNOTSUPP if not. C45 only busses do exist, and in future their C22 methods will be NULL. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Michael Walle <michael@walle.cc> --- drivers/net/phy/mdio_bus.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index c992a9fd8b01..f71ba6ab85a7 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -766,7 +766,10 @@ int __mdiobus_read(struct mii_bus *bus, int addr, u32 regnum) lockdep_assert_held_once(&bus->mdio_lock); - retval = bus->read(bus, addr, regnum); + if (bus->read) + retval = bus->read(bus, addr, regnum); + else + retval = -EOPNOTSUPP; trace_mdio_access(bus, 1, addr, regnum, retval, retval); mdiobus_stats_acct(&bus->stats[addr], true, retval); @@ -792,7 +795,10 @@ int __mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val) lockdep_assert_held_once(&bus->mdio_lock); - err = bus->write(bus, addr, regnum, val); + if (bus->write) + err = bus->write(bus, addr, regnum, val); + else + err = -EOPNOTSUPP; trace_mdio_access(bus, 0, addr, regnum, val, err); mdiobus_stats_acct(&bus->stats[addr], false, err);