From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ioana Ciornei Subject: [PATCH net-next v2 2/2] dpaa2-ptp: defer probe when portal allocation failed Date: Fri, 9 Nov 2018 15:26:46 +0000 Message-ID: <1541777182-9135-3-git-send-email-ioana.ciornei@nxp.com> References: <1541777182-9135-1-git-send-email-ioana.ciornei@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Cc: Ioana Ciocoi Radulescu , Ioana Ciornei To: "netdev@vger.kernel.org" , "davem@davemloft.net" , "andrew@lunn.ch" Return-path: Received: from mail-eopbgr80077.outbound.protection.outlook.com ([40.107.8.77]:37920 "EHLO EUR04-VI1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727784AbeKJBHz (ORCPT ); Fri, 9 Nov 2018 20:07:55 -0500 In-Reply-To: <1541777182-9135-1-git-send-email-ioana.ciornei@nxp.com> Content-Language: en-US Sender: netdev-owner@vger.kernel.org List-ID: The fsl_mc_portal_allocate can fail when the requested MC portals are not yet probed by the fsl_mc_allocator. In this situation, the driver should defer the probe. Signed-off-by: Ioana Ciornei --- Changes in v2: - none drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c b/drivers/net= /ethernet/freescale/dpaa2/dpaa2-ptp.c index 84b942b..9b150db 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c @@ -140,7 +140,10 @@ static int dpaa2_ptp_probe(struct fsl_mc_device *mc_de= v) =20 err =3D fsl_mc_portal_allocate(mc_dev, 0, &mc_dev->mc_io); if (err) { - dev_err(dev, "fsl_mc_portal_allocate err %d\n", err); + if (err =3D=3D -ENXIO) + err =3D -EPROBE_DEFER; + else + dev_err(dev, "fsl_mc_portal_allocate err %d\n", err); goto err_exit; } =20 --=20 1.9.1