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 EEBAF227599 for ; Tue, 29 Jul 2025 04:28:59 +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=1753763340; cv=none; b=bic7hO+wQd59/3kbD43NEj5SFsVxx+5lybmCiC0XtjW5jmezVlOTjAJWsmHS7At7CTY3aNpptWKrr9zfbBBahKqxn3mo54PhYe69lPGUBNl6Lz2ma8zuIkc5XiPIP0JBddZj1G+NK7153iQDAXBfSAqDEBBOeTNDV3qoDmFByHw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753763340; c=relaxed/simple; bh=qI9aGGTuk19zzaPfcSGSwWEYLbP/l9Oq836zmFs2t4Y=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=WU32gGpMNbM5KIRBxlVxx6XsRQJY/zQBut8zd665VAr2tmTzBZrosp4nKKCoH53K2ARi8emDQzKh2I5qfPwIc1sYS1j0IicL8rFwe8W5O7n5hhkdxA3l9ujR1jcqmVOng7WUfmwk/B8QtpfMlMvcgwD0f3VpbgznhmRwwtQbEtI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a89ex5rM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="a89ex5rM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB36BC4CEF8; Tue, 29 Jul 2025 04:28:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753763339; bh=qI9aGGTuk19zzaPfcSGSwWEYLbP/l9Oq836zmFs2t4Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a89ex5rMWdF93mAr9PPx30XPR51XPMX6l2xrMkmoTYV97dV8D4K1LgJwagElzb5Ac gpFZsdocBKhJoFFimy8OVE+OxUKRQGqZzX6X8BSZcrfb3srFSKKwtk781tnLDzJMRp rE1em+q9FugQOHTSW8i3M5eRLlYTXBZM4yIVMgQ7Z40SN+rEtpEo95UZCOoHORvjjs dsWCdGQ2/Z8UVLYBuHaowy4p1SUwKDqY7RrBmzmgvSxf8UvoSJF7MMJlPFe8S2aVPl JNpD8AbYyLKtfii852cwVFWVcHjx81XwVVVQctZk044skWqsL6ghJBP9ctVYSCDPEQ cz6rbwKHi2RSw== From: Sasha Levin To: stable@vger.kernel.org Cc: Ioana Ciornei , Andrew Lunn , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.10.y 3/4] dpaa2-eth: retry the probe when the MAC is not yet discovered on the bus Date: Tue, 29 Jul 2025 00:28:52 -0400 Message-Id: <20250729042853.2357022-3-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250729042853.2357022-1-sashal@kernel.org> References: <2025072840-quickstep-spiny-0e80@gregkh> <20250729042853.2357022-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Ioana Ciornei [ Upstream commit 47325da28ef137fa04a0e5d6d244e9635184bf5e ] The fsl_mc_get_endpoint() function now returns -EPROBE_DEFER when the dpmac device was not yet discovered by the fsl-mc bus. When this happens, pass the error code up so that we can retry the probe at a later time. Signed-off-by: Ioana Ciornei Reviewed-by: Andrew Lunn Signed-off-by: Jakub Kicinski Stable-dep-of: ee9f3a81ab08 ("dpaa2-eth: Fix device reference count leak in MAC endpoint handling") Signed-off-by: Sasha Levin --- drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c index 217e3004c0cc..9338a7d31545 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c @@ -4134,7 +4134,11 @@ static int dpaa2_eth_connect_mac(struct dpaa2_eth_priv *priv) dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent); dpmac_dev = fsl_mc_get_endpoint(dpni_dev); - if (IS_ERR_OR_NULL(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type) + + if (PTR_ERR(dpmac_dev) == -EPROBE_DEFER) + return PTR_ERR(dpmac_dev); + + if (IS_ERR(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type) return 0; mac = kzalloc(sizeof(struct dpaa2_mac), GFP_KERNEL); -- 2.39.5