From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta1.migadu.com (out-244.mta1.migadu.com [95.215.58.244]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 560413F4106 for ; Mon, 10 Aug 2026 14:15:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.244 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786371352; cv=none; b=YabiP5Nv1AaABG6csAF9bnIuRLlTxgYvED5onksrEA1QZ2Dk2E5Bcb1tINf50rfDIiHgDL4Iymz+kbg6St2mETkDlWQ8hb+Bi8CMIzwu4ds5nk4fhhvsbZIQ+FLQwAM8huxvbE0E0+/VFDjkpP3cA+zPqR92+nFhc4Kndf4/7/c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786371352; c=relaxed/simple; bh=ff4LuV6jHqcdhp0XotpOVpYLtl8eBcAQM+iD7p+pNgI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZHtRDQ1IPMlXW/Zx4wZu0OyIWoBCvH3JC1R0j6UC/TH3nbLa2icd6l6eyrZT38MBaBggZaw407JMEa1BquNhneRehQWvCVt9m7YsZ5JInTLUAp5Zna9d9DNoLRs9LQKZmU1U20BWUMLm0VTIauMuWU6kpb8ep6pEoM4FbYRKW8E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=xPOrofuG; arc=none smtp.client-ip=95.215.58.244 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="xPOrofuG" X-Envelope-To: netdev@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=ff4LuV6jHqcdhp0XotpOVpYLtl8eBcAQM+iD7p+pNgI=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1786371348; v=1; x=1786976148; b=xPOrofuG8y6u/KzfIW8HW5vLtX8Qsi0KuA7o2Nq4Y4zHJR4qWLW9PTwNpE+kmt5uy+U5aiYG T73ZikbzZ7IejKrgOc0y3CHdDzwfKqDrgVWCfjpHZkC6NMapVYFukHBwDgAkZrmVcznWwC79HJw VbQbTXQ9/V/CYGfC87teF50A= X-Envelope-To: netdev@vger.kernel.org Received: from localhost.localdomain (116.128.244.171) by mta10.migadu.com with ESMTPS id 00a30766d2c9193a; Mon, 10 Aug 2026 14:15:48 +0000 X-Migadu-Scanner: mta10.migadu.com Authentication-Results: mta10.migadu.com; none From: xuanqiang.luo@linux.dev To: netdev@vger.kernel.org, andrew@lunn.ch Cc: kuba@kernel.org, richardcochran@gmail.com, hkallweit1@gmail.com, linux@armlinux.org.uk, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, maxime.chevallier@bootlin.com, luoxuanqiang@kylinos.cn Subject: [PATCH net v5 1/4] net: phy: add PHY package locking helpers Date: Mon, 10 Aug 2026 22:15:08 +0800 Message-ID: <20260810141511.73204-2-xuanqiang.luo@linux.dev> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260810141511.73204-1-xuanqiang.luo@linux.dev> References: <20260810141511.73204-1-xuanqiang.luo@linux.dev> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Xuanqiang Luo The PHY package API provides private data shared by all PHYs in a package. Drivers are responsible for synchronizing access to this data, but the API does not provide a lock for that purpose. Add phy_package_lock() and phy_package_unlock() for drivers to serialize access to package-private data, including its initialization. Reviewed-by: Andrew Lunn Signed-off-by: Xuanqiang Luo --- drivers/net/phy/phy_package.c | 23 +++++++++++++++++++++++ drivers/net/phy/phylib.h | 2 ++ 2 files changed, 25 insertions(+) diff --git a/drivers/net/phy/phy_package.c b/drivers/net/phy/phy_package.c index 16ae8d1c1f89a..735806c5bea88 100644 --- a/drivers/net/phy/phy_package.c +++ b/drivers/net/phy/phy_package.c @@ -52,6 +52,29 @@ void *phy_package_get_priv(struct phy_device *phydev) } EXPORT_SYMBOL_GPL(phy_package_get_priv); +/** + * phy_package_lock - acquire the PHY package lock + * @phydev: PHY device that has joined the package + * + * Use this to serialize access to package-private data. Release the lock + * with phy_package_unlock(). + */ +void phy_package_lock(struct phy_device *phydev) +{ + mutex_lock(&phydev->mdio.bus->shared_lock); +} +EXPORT_SYMBOL_GPL(phy_package_lock); + +/** + * phy_package_unlock - release the PHY package lock + * @phydev: PHY device that has joined the package + */ +void phy_package_unlock(struct phy_device *phydev) +{ + mutex_unlock(&phydev->mdio.bus->shared_lock); +} +EXPORT_SYMBOL_GPL(phy_package_unlock); + static int phy_package_address(struct phy_device *phydev, unsigned int addr_offset) { diff --git a/drivers/net/phy/phylib.h b/drivers/net/phy/phylib.h index 0fba245f97458..c6e26ac6b28f0 100644 --- a/drivers/net/phy/phylib.h +++ b/drivers/net/phy/phylib.h @@ -12,6 +12,8 @@ struct mii_bus; struct device_node *phy_package_get_node(struct phy_device *phydev); void *phy_package_get_priv(struct phy_device *phydev); +void phy_package_lock(struct phy_device *phydev); +void phy_package_unlock(struct phy_device *phydev); int __phy_package_read(struct phy_device *phydev, unsigned int addr_offset, u32 regnum); int __phy_package_write(struct phy_device *phydev, unsigned int addr_offset, -- 2.43.0