From nobody Sat Apr 11 08:29:30 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40D0DC7EE30 for ; Fri, 3 Mar 2023 21:52:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233029AbjCCVwh (ORCPT ); Fri, 3 Mar 2023 16:52:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37704 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233180AbjCCVum (ORCPT ); Fri, 3 Mar 2023 16:50:42 -0500 Received: from bee.birch.relay.mailchannels.net (bee.birch.relay.mailchannels.net [23.83.209.14]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 223CC2712; Fri, 3 Mar 2023 13:46:44 -0800 (PST) X-Sender-Id: dreamhost|x-authsender|hussein@unixcat.org Received: from relay.mailchannels.net (localhost [127.0.0.1]) by relay.mailchannels.net (Postfix) with ESMTP id D0AE3880E3E; Fri, 3 Mar 2023 21:45:33 +0000 (UTC) Received: from pdx1-sub0-mail-a274.dreamhost.com (unknown [127.0.0.6]) (Authenticated sender: dreamhost) by relay.mailchannels.net (Postfix) with ESMTPA id 5A65B88101F; Fri, 3 Mar 2023 21:45:33 +0000 (UTC) ARC-Seal: i=1; s=arc-2022; d=mailchannels.net; t=1677879933; a=rsa-sha256; cv=none; b=MEGxXBHUnxusvezEG69tROrDKDyqKvgEZdl1jXELcQk9v1sc4+/MduaVF6wnHdAxIeJyqx A7U0LAaH4pD0ij1+jhL0aixFmLmTnkABP3WHngMIh/RUWZzxi0hxFtC0FyV42hZKTh8UX2 y+sfFLiVJzi4k1PPlN5mu7LzI1Udq800wF0UtMZAJGxqO2SLH/xHN66fbSCtEQYv7WvmJr +F/127Otw6r0lul0uTu+zGb5cXMswDGkp22RGvf+A6+y/wg2PnskKDYfBDMu5cvyUZByKk GfTb8fpgn9fvGtqCiwHToS4c+y8DTcmf91Af94JAlWaHHEtGuoeMxEVxUi5kgg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=mailchannels.net; s=arc-2022; t=1677879933; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding:dkim-signature; bh=u+9GNR2JIWiMQyC7QKqhP3pgacqFjUfe90nVtUf476g=; b=CUBNET4t3cRwCazTcnBPrSHso18jBObrz1NQlAjdF7uTA5uLkd0vIFg24pfnxG7EIow6ri rR6VGv00EF+knI8sbyqWdC0tP0sSZe0M4P6Mj4edb26lWEhOwcqzH5SyfPqOuaJiQLFpQ8 56n2djtNTt3OmhsUCUb+KUtPSHHgrpSBNWxDMkiDRraDXOeZWcIPSDVeO+qrZgc4jD2RGv +OGoEvX9TtBdXYTYeaX9JZPIpZQMamM0XUMDv/rwoP316PkzwqN7jg2SA1OdZcDAkh77tO owShcZebq7hx29wz/MUJKPrnW4nAdilJinLhwKznPExRnQYz+iv6bI7DdxJR+w== ARC-Authentication-Results: i=1; rspamd-fd4f5fb8c-t7qck; auth=pass smtp.auth=dreamhost smtp.mailfrom=hussein@unixcat.org X-Sender-Id: dreamhost|x-authsender|hussein@unixcat.org X-MC-Relay: Neutral X-MailChannels-SenderId: dreamhost|x-authsender|hussein@unixcat.org X-MailChannels-Auth-Id: dreamhost X-Turn-Chemical: 4fa4edc10520b167_1677879933636_439526163 X-MC-Loop-Signature: 1677879933636:854917284 X-MC-Ingress-Time: 1677879933636 Received: from pdx1-sub0-mail-a274.dreamhost.com (pop.dreamhost.com [64.90.62.162]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384) by 100.119.33.161 (trex/6.7.2); Fri, 03 Mar 2023 21:45:33 +0000 Received: from localhost (unknown [175.144.191.112]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: hussein@unixcat.org) by pdx1-sub0-mail-a274.dreamhost.com (Postfix) with ESMTPSA id 4PT1jm4YpPzqw; Fri, 3 Mar 2023 13:45:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unixcat.org; s=dreamhost; t=1677879933; bh=u+9GNR2JIWiMQyC7QKqhP3pgacqFjUfe90nVtUf476g=; h=From:To:Cc:Subject:Date:Content-Transfer-Encoding; b=qkRGTl7whr+bfZYrsZNtXxHdxZjfkSwhoBAtn4qzOK41rF9h6beGnlGtG3BUL+xyV SznlIC47+lpYNbcdAa6nj/svz34+i+upnR1//JSBCcgbPfVDJrzQ2LnkjlO0JVyAmZ dHvXfoqleB6VTajRRArX4Jk/aoZMP+Z27MiSSxWg= From: Nur Hussein To: a.zummo@towertech.it, alexandre.belloni@bootlin.com, linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Nur Hussein Subject: [PATCH] Error checking for spi_setup during probe function added to rtc-m41t94 driver Date: Sat, 4 Mar 2023 05:45:26 +0800 Message-Id: <20230303214526.1831504-1-hussein@unixcat.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The m41t94_probe() function calls spi_setup() but does not check for an error upon return. I have added this check, and returns the error and sets the error message via dev_error to "spi_setup failed". Signed-off-by: Nur Hussein --- drivers/rtc/rtc-m41t94.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-m41t94.c b/drivers/rtc/rtc-m41t94.c index 6803b0273302..4bdee2336228 100644 --- a/drivers/rtc/rtc-m41t94.c +++ b/drivers/rtc/rtc-m41t94.c @@ -112,7 +112,12 @@ static int m41t94_probe(struct spi_device *spi) int res; =20 spi->bits_per_word =3D 8; - spi_setup(spi); + + res =3D spi_setup(spi); + if (res < 0) { + dev_err(&spi->dev, "spi setup failed.\n"); + return res; + } =20 res =3D spi_w8r8(spi, M41T94_REG_SECONDS); if (res < 0) { --=20 2.34.1