From patchwork Thu Jul 22 03:39:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Leizhen (ThunderTown)" X-Patchwork-Id: 12392901 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=-18.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,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 16D0EC07E9D for ; Thu, 22 Jul 2021 03:42:36 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CB85D610CC for ; Thu, 22 Jul 2021 03:42:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CB85D610CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=wl8DeUxI1Ez5ql2BDk0YycHQzGBnscBLc4qkIm3U8tU=; b=w2xi6TgZNEEfaz X8XU3sI+J1Ocju5EtSnEafnfdirZ4pQ8FjwCQB2zt0UOzclw5+Sn/H3Kx3H6KmV4rtKaz9H5pL2mq TNMJU6r9I3AcBOk6lAxsWzP5UDoUJFoykDi4ajpsUG+D6HDtOk+aNyeGs3dGFch6cgtXsSDahi4kY hvg4S8eIGpMubLf9KAR4fLFxu3d1PtveP7389xm+LMstOYzDniPmZXmjR8/yhyNMUMeLe02vNhXCz L8VeI8EKN6GoBstdIHcS5wVl2k+loEnGAZPyhm2+oanahO+e06hWmiqmNJp/l+ya1MZ9XrZUk1rWb 0TxJyTEFfkj6lYm7UoDw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6Pa1-0008DA-F8; Thu, 22 Jul 2021 03:41:01 +0000 Received: from szxga08-in.huawei.com ([45.249.212.255]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6PZn-0008Bd-0z for linux-arm-kernel@lists.infradead.org; Thu, 22 Jul 2021 03:40:48 +0000 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.54]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4GVdP555Kpz1CMXP; Thu, 22 Jul 2021 11:34:49 +0800 (CST) Received: from dggpemm500006.china.huawei.com (7.185.36.236) by dggemv703-chm.china.huawei.com (10.3.19.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 22 Jul 2021 11:40:37 +0800 Received: from thunder-town.china.huawei.com (10.174.179.0) by dggpemm500006.china.huawei.com (7.185.36.236) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 22 Jul 2021 11:40:36 +0800 From: Zhen Lei To: Tony Lindgren , Haojian Zhuang , Linus Walleij , linux-arm-kernel , linux-omap , linux-gpio , linux-kernel CC: Zhen Lei Subject: [PATCH v2 2/2] pinctrl: single: Move test PCS_HAS_PINCONF in pcs_parse_bits_in_pinctrl_entry() to the beginning Date: Thu, 22 Jul 2021 11:39:30 +0800 Message-ID: <20210722033930.4034-3-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.26.0.windows.1 In-Reply-To: <20210722033930.4034-1-thunder.leizhen@huawei.com> References: <20210722033930.4034-1-thunder.leizhen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.179.0] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500006.china.huawei.com (7.185.36.236) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210721_204047_290375_C8AA2374 X-CRM114-Status: GOOD ( 12.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The value of pcs->flags is not overwritten in function pcs_parse_bits_in_pinctrl_entry() and its subfunctions, so moving this check to the beginning of the function eliminates unnecessary rollback operations. Signed-off-by: Zhen Lei Reviewed-by: Tony Lindgren --- drivers/pinctrl/pinctrl-single.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index 4fcae8458359..d8b4dc40f3c6 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -1115,7 +1115,7 @@ static int pcs_parse_bits_in_pinctrl_entry(struct pcs_device *pcs, { const char *name = "pinctrl-single,bits"; struct pcs_func_vals *vals; - int rows, *pins, found = 0, res = -ENOMEM, i, fsel, gsel; + int rows, *pins, found = 0, res = -ENOMEM, i, fsel; int npins_in_row; struct pcs_function *function = NULL; @@ -1125,6 +1125,11 @@ static int pcs_parse_bits_in_pinctrl_entry(struct pcs_device *pcs, return -EINVAL; } + if (PCS_HAS_PINCONF) { + dev_err(pcs->dev, "pinconf not supported\n"); + return -ENOTSUPP; + } + npins_in_row = pcs->width / pcs->bits_per_pin; vals = devm_kzalloc(pcs->dev, @@ -1212,30 +1217,19 @@ static int pcs_parse_bits_in_pinctrl_entry(struct pcs_device *pcs, goto free_pins; } - gsel = pinctrl_generic_add_group(pcs->pctl, np->name, pins, found, pcs); - if (gsel < 0) { - res = gsel; + res = pinctrl_generic_add_group(pcs->pctl, np->name, pins, found, pcs); + if (res < 0) goto free_function; - } (*map)->type = PIN_MAP_TYPE_MUX_GROUP; (*map)->data.mux.group = np->name; (*map)->data.mux.function = np->name; - if (PCS_HAS_PINCONF) { - dev_err(pcs->dev, "pinconf not supported\n"); - res = -ENOTSUPP; - goto free_pingroups; - } - *num_maps = 1; mutex_unlock(&pcs->mutex); return 0; -free_pingroups: - pinctrl_generic_remove_group(pcs->pctl, gsel); - *num_maps = 1; free_function: pinmux_generic_remove_function(pcs->pctl, fsel); free_pins: