From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3FF6A78B70; Wed, 21 Feb 2024 13:49:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708523370; cv=none; b=dlADWoimxV1kaleD+/fNGP27e/bgbXiO4azx8G3tdho0WFooWEDqLUZVhTYI0l5AO6UfmtwQPqe5QgCc8IQV4BdNSWhSg3f68/SQ9vyox302zVZrxggAqyGohSO+I114+lJvfZP9dig7EUwUS/akzeuZZACRcYfHDoHxRCV5zd8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708523370; c=relaxed/simple; bh=bKnrItrAjV1chRqk1lqOBt5TJD66rLSGjFT6PdShlCI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W6qsWzNkbzmUtlY5SQWfBwRnJN+lE5dUl5fsiUd10b4Ji0WWqgWBj1hdbUuSMkoUi/rJhZd4zgJ0rmFravlrlEjxc+ttXo7KRHclhBn92hSY2wmZL5CKrBicMLLXoAQf6FSWTF3AAw9WmU2+5+RR2/zmBc2Kow/KN/3mQl3QocE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=no2zQDZ6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="no2zQDZ6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3556FC433C7; Wed, 21 Feb 2024 13:49:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708523367; bh=bKnrItrAjV1chRqk1lqOBt5TJD66rLSGjFT6PdShlCI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=no2zQDZ6eYQAr8VkMCUNB2gb1s/wEBxAYUCGrlP1edTAn6thfQ1BzjiUCO0WGdNgW ZpwuSjKmP8c2xZqRFq+K5aCDvrwHkQ+ywxA2kJSTZFoG6KpB6NRHg/atcx0hgac+/y 9LA+JzRLrhL5ile2ejGXJFoa7B25D3TdfbEOCtTg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sinthu Raja , Paolo Abeni Subject: [PATCH 5.15 415/476] net: ethernet: ti: cpsw: enable mac_managed_pm to fix mdio Date: Wed, 21 Feb 2024 14:07:46 +0100 Message-ID: <20240221130023.362958862@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221130007.738356493@linuxfoundation.org> References: <20240221130007.738356493@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sinthu Raja commit bc4ce46b1e3d1da4309405cd4afc7c0fcddd0b90 upstream. The below commit introduced a WARN when phy state is not in the states: PHY_HALTED, PHY_READY and PHY_UP. commit 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state") When cpsw resumes, there have port in PHY_NOLINK state, so the below warning comes out. Set mac_managed_pm be true to tell mdio that the phy resume/suspend is managed by the mac, to fix the following warning: WARNING: CPU: 0 PID: 965 at drivers/net/phy/phy_device.c:326 mdio_bus_phy_resume+0x140/0x144 CPU: 0 PID: 965 Comm: sh Tainted: G O 6.1.46-g247b2535b2 #1 Hardware name: Generic AM33XX (Flattened Device Tree) unwind_backtrace from show_stack+0x18/0x1c show_stack from dump_stack_lvl+0x24/0x2c dump_stack_lvl from __warn+0x84/0x15c __warn from warn_slowpath_fmt+0x1a8/0x1c8 warn_slowpath_fmt from mdio_bus_phy_resume+0x140/0x144 mdio_bus_phy_resume from dpm_run_callback+0x3c/0x140 dpm_run_callback from device_resume+0xb8/0x2b8 device_resume from dpm_resume+0x144/0x314 dpm_resume from dpm_resume_end+0x14/0x20 dpm_resume_end from suspend_devices_and_enter+0xd0/0x924 suspend_devices_and_enter from pm_suspend+0x2e0/0x33c pm_suspend from state_store+0x74/0xd0 state_store from kernfs_fop_write_iter+0x104/0x1ec kernfs_fop_write_iter from vfs_write+0x1b8/0x358 vfs_write from ksys_write+0x78/0xf8 ksys_write from ret_fast_syscall+0x0/0x54 Exception stack(0xe094dfa8 to 0xe094dff0) dfa0: 00000004 005c3fb8 00000001 005c3fb8 00000004 00000001 dfc0: 00000004 005c3fb8 b6f6bba0 00000004 00000004 0059edb8 00000000 00000000 dfe0: 00000004 bed918f0 b6f09bd3 b6e89a66 Cc: # v6.0+ Fixes: 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state") Fixes: fba863b81604 ("net: phy: make PHY PM ops a no-op if MAC driver manages PHY PM") Signed-off-by: Sinthu Raja Signed-off-by: Paolo Abeni Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/ti/cpsw.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index ea85c6dd5484..c0a5abd8d9a8 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -631,6 +631,8 @@ static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv) } } + phy->mac_managed_pm = true; + slave->phy = phy; phy_attached_info(slave->phy); -- 2.43.2