From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99869C282C8 for ; Mon, 28 Jan 2019 17:26:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5ECB020855 for ; Mon, 28 Jan 2019 17:26:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548696365; bh=tVhLaO8AFrXoV9RBbMbzy2X+9ZWeSUKzmb+unBx5Ulw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tlnWNQcyBhS9ixFqm9FRE1H+o7kaD7m2yf8afl/4vtEHO0Jcsr4ss8ga1ET1UXrcx tACJVOpuyUdj/K2f/wPdUAQJxLjFvcmdw4UOx+RgCILb3rrMV1qXUZVRoYqwHvUBm3 64hmo1pcJTsXoJo5m1dS6EOtEBza0sxKExhPbARw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730873AbfA1QAy (ORCPT ); Mon, 28 Jan 2019 11:00:54 -0500 Received: from mail.kernel.org ([198.145.29.99]:46152 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730512AbfA1QAv (ORCPT ); Mon, 28 Jan 2019 11:00:51 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5E35221919; Mon, 28 Jan 2019 16:00:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548691251; bh=tVhLaO8AFrXoV9RBbMbzy2X+9ZWeSUKzmb+unBx5Ulw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=anKW3tmRdGDiwjwdSc9N8NwS5QRYjsOhmcLSacjsQazXHFZejtGnliV09T4h+ehtN 04DRtVxBhv24PpIlhe6IswWzB41+NE12X3nXBwi5aOY3epEy4P8zMB2LrzPu0CqQlb blfQ+UCYwEDemZVcepaJojH+C/J8Q3YdnrugN0no= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ioana Ciornei , "David S . Miller" , Sasha Levin , devel@driverdev.osuosl.org Subject: [PATCH AUTOSEL 4.19 032/258] dpaa2-ptp: defer probe when portal allocation failed Date: Mon, 28 Jan 2019 10:55:38 -0500 Message-Id: <20190128155924.51521-32-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128155924.51521-1-sashal@kernel.org> References: <20190128155924.51521-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ioana Ciornei [ Upstream commit 5500598abbfb5b46201b9768bd9ea873a5eeaece ] 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 Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/staging/fsl-dpaa2/rtc/rtc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/staging/fsl-dpaa2/rtc/rtc.c b/drivers/staging/fsl-dpaa2/rtc/rtc.c index 0d52cb85441f..318a33c2f7a7 100644 --- a/drivers/staging/fsl-dpaa2/rtc/rtc.c +++ b/drivers/staging/fsl-dpaa2/rtc/rtc.c @@ -142,7 +142,10 @@ static int rtc_probe(struct fsl_mc_device *mc_dev) err = 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 == -ENXIO) + err = -EPROBE_DEFER; + else + dev_err(dev, "fsl_mc_portal_allocate err %d\n", err); goto err_exit; } -- 2.19.1