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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D953BC43217 for ; Wed, 23 Feb 2022 19:15:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235316AbiBWTP7 (ORCPT ); Wed, 23 Feb 2022 14:15:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235568AbiBWTP6 (ORCPT ); Wed, 23 Feb 2022 14:15:58 -0500 Received: from smtp-relay-internal-0.canonical.com (smtp-relay-internal-0.canonical.com [185.125.188.122]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B5F3403C2 for ; Wed, 23 Feb 2022 11:15:30 -0800 (PST) Received: from mail-ej1-f70.google.com (mail-ej1-f70.google.com [209.85.218.70]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-internal-0.canonical.com (Postfix) with ESMTPS id 9C9F540812 for ; Wed, 23 Feb 2022 19:15:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1645643727; bh=H2keAgAmU9ZqqGFkafNbZlkvfevlWycDJlQlht8xanA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=AF9ts47nu/KhofkG8rPZ1YuCPSGC1Sq6rcWghVxg5/oyUv9Qh4jWfW3nkIYvyWKkN R3OjpM+fxUh7JOi3NrLE6kefH5S+GAX9xd1o8oXGVe0t8IwyEedpguE/5J3LApT42J fmto43y+r6abksqrcB2pF7VoAFLpgq7hbltUSnBPSkRTjtrpGiEEb6lWA7U5TGulqv oBhD3O+CQhkRJkATgzt4Yh1u039PsfWSkTjDH22LretlXQPtFfjXQyfnokrU+3aReY El77HS7AV0A5gF8fHuiHPtpny9WX3HMKYYShNEN1mpb/J2mPszeq59krN/PtcHgUd2 LlF1qf0AFcGWQ== Received: by mail-ej1-f70.google.com with SMTP id qa30-20020a170907869e00b006cee5e080easo7440777ejc.3 for ; Wed, 23 Feb 2022 11:15:27 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=H2keAgAmU9ZqqGFkafNbZlkvfevlWycDJlQlht8xanA=; b=gOn6LfbjlrBA+aRfGeLpi+ar0JLIZam6idJaBt4V+TjrnK7JmmfpFCxnO67BUNhMLX HOkRFTZJjjIwpvVmPxJPJPDSgmKR36cXNySKPpJrltwA0moMfqOThK6oHlLdiod1yyL/ ZUky8WLQKoAu8FSevTzkjYl8PJy3xw2st6aEOmCQr9VXaZ5ddLLSEr3Zm0QzorgdEJmZ oS155OiU/eBDZGzKA8Q4mwDsHRDBHUiWXfGSl2pAhamKwbUCANkySIQNFCNpd6Hpedt7 9FzfEx+i44fFM4UJe+WvJ8ffJZJLcE4PxpQVy91dwUuqJawn6BDqg01YsfSKALiU+GmS oh3w== X-Gm-Message-State: AOAM533kAyobdVZuhQxCIPsp1R+H4o8oCWXfwk0o8Gm90NHLTpqdtJvt 9vGNG8zChZR7LDXinPxaHKfBkwyYKnSrNz4Y4OvLeW+Y0yN/uWv5G1otktTce8DSG/VH/e2aZGi Dtd6Unup+Vb3f3qYFw/XPSyqa1Xnj2cJVJij2XQ== X-Received: by 2002:a17:906:684a:b0:6ce:c1b4:b503 with SMTP id a10-20020a170906684a00b006cec1b4b503mr894511ejs.355.1645643725345; Wed, 23 Feb 2022 11:15:25 -0800 (PST) X-Google-Smtp-Source: ABdhPJwpQByhmcToLCr1i/g+5dfeJyrnQroTWuW6ciExOrKYOzQiErT2Fu468xjrk+1eigQXSikm5Q== X-Received: by 2002:a17:906:684a:b0:6ce:c1b4:b503 with SMTP id a10-20020a170906684a00b006cec1b4b503mr894476ejs.355.1645643725160; Wed, 23 Feb 2022 11:15:25 -0800 (PST) Received: from localhost.localdomain (xdsl-188-155-181-108.adslplus.ch. [188.155.181.108]) by smtp.gmail.com with ESMTPSA id b3sm208368ejl.67.2022.02.23.11.15.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Feb 2022 11:15:24 -0800 (PST) From: Krzysztof Kozlowski To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Stuart Yoder , Laurentiu Tudor , Abel Vesa , Shawn Guo , Sascha Hauer , Fabio Estevam , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , Bjorn Helgaas , Bjorn Andersson , Mathieu Poirier , Vineeth Vijayan , Peter Oberparleiter , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Andy Gross , Srinivas Kandagatla , Mark Brown , "Michael S. Tsirkin" , Jason Wang , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, linux-spi@vger.kernel.org, virtualization@lists.linux-foundation.org, Linus Torvalds Cc: Rasmus Villemoes , Krzysztof Kozlowski Subject: [PATCH v2 08/11] vdpa: use helper for safer setting of driver_override Date: Wed, 23 Feb 2022 20:14:38 +0100 Message-Id: <20220223191441.348109-2-krzysztof.kozlowski@canonical.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220223191310.347669-1-krzysztof.kozlowski@canonical.com> References: <20220223191310.347669-1-krzysztof.kozlowski@canonical.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Use a helper for seting driver_override to reduce amount of duplicated code. Signed-off-by: Krzysztof Kozlowski --- drivers/vdpa/vdpa.c | 25 ++++--------------------- 1 file changed, 4 insertions(+), 21 deletions(-) diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index 9846c9de4bfa..76ce2dcae7cb 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -77,32 +77,15 @@ static ssize_t driver_override_store(struct device *dev, const char *buf, size_t count) { struct vdpa_device *vdev = dev_to_vdpa(dev); - const char *driver_override, *old; - char *cp; + int ret; /* We need to keep extra room for a newline */ if (count >= (PAGE_SIZE - 1)) return -EINVAL; - driver_override = kstrndup(buf, count, GFP_KERNEL); - if (!driver_override) - return -ENOMEM; - - cp = strchr(driver_override, '\n'); - if (cp) - *cp = '\0'; - - device_lock(dev); - old = vdev->driver_override; - if (strlen(driver_override)) { - vdev->driver_override = driver_override; - } else { - kfree(driver_override); - vdev->driver_override = NULL; - } - device_unlock(dev); - - kfree(old); + ret = driver_set_override(dev, &vdev->driver_override, buf); + if (ret) + return ret; return count; } -- 2.32.0