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=-6.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 723E2C7618B for ; Mon, 29 Jul 2019 11:53:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 499A72070D for ; Mon, 29 Jul 2019 11:53:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=essensium-com.20150623.gappssmtp.com header.i=@essensium-com.20150623.gappssmtp.com header.b="p97UEoNg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387860AbfG2LxA (ORCPT ); Mon, 29 Jul 2019 07:53:00 -0400 Received: from mail-ot1-f65.google.com ([209.85.210.65]:46110 "EHLO mail-ot1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387482AbfG2Lw7 (ORCPT ); Mon, 29 Jul 2019 07:52:59 -0400 Received: by mail-ot1-f65.google.com with SMTP id z23so33874233ote.13 for ; Mon, 29 Jul 2019 04:52:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=essensium-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=PPGf0kPbvhe2HXNESzGCCBqYTl2vqafsajjrV11C25I=; b=p97UEoNg/4v5WyEnvrg6cBEmCngBnKeqFcpQlsDLMsJijmNXQOucbWp+t+TFovLOXZ qgqyVce9UCFzNi2sjQ7Zt9gV2tetGlakx45j63Mpcia5m09PM9omEz3/9LkbQmwePBL0 VIF48g2yFADHWzzsSYLAgHOgCSTVNqoVcqaUU6txNjq6wdlFeZykRdbr6oFPL8FaU8+N dThYCT69kkPPeOrsWEGninxKcQ497ZwrJyIUU11P2AOJnQotM+PNQmu/63YJNzXRZwdv GLIEsRZvBtfJbs0do5wKLVvnCcRT1tm49qlpeRTJckOuQf8JWRg21d6AaUqUz4mY25if ZdtA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=PPGf0kPbvhe2HXNESzGCCBqYTl2vqafsajjrV11C25I=; b=s8ltYE/piqn903wCEAmKJIlWp026hMSIXRnR3ojuCjB2WtuiHwsPiR8j+tGuHY22Bl C53s1CdB4SdpPF/APwNjQ9ojTuOR4Po097bDDM2reFl9vvYcH6tuZr4cur0qzxJrJrao j9K9A7LtJvRCrVZe2KvOdmQryAsvjsHfhhWaG+BspjhqvZJTITY/K4m4+2p/5fdkm0G8 e0/rSvXpMzKgjaO2WvZprObcg+IDKjWwXtCazSmKeCuqdS/TpPDRHqt0Nw623dxFeBnj NkEKU4UU4P1Dv2VCDFs+ptLbtve0xgMkeGrAhXHSJVuS935hNcu7o82IPJy0S1BrjBdo Zumg== X-Gm-Message-State: APjAAAUTfjALc3xoww9yZvn646eCVvBcaAKK2jv6CSIv9QEy9n9KJfps MUJKPzCjWFNV2tcRxjc1JuMCCwCOmNTyDupGOW0IAw== X-Google-Smtp-Source: APXvYqyS81a5YCskF+EiZflTcgNqYeRMHdvCBcOv1gxPheP1eba17RzCLqIog5cAcS4IbQhdIPt/ugH4upY8MEazw/A= X-Received: by 2002:a9d:48f:: with SMTP id 15mr49061044otm.160.1564401178640; Mon, 29 Jul 2019 04:52:58 -0700 (PDT) MIME-Version: 1.0 References: <20190726133916.26186-1-hslester96@gmail.com> In-Reply-To: <20190726133916.26186-1-hslester96@gmail.com> From: Patrick Havelange Date: Mon, 29 Jul 2019 13:52:47 +0200 Message-ID: Subject: Re: [PATCH v2] counter/ftm-quaddec: Use device-managed registration API To: Chuhong Yuan Cc: William Breathitt Gray , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 26, 2019 at 3:39 PM Chuhong Yuan wrote: > > Make use of devm_counter_register. > Then we can remove redundant unregistration API > usage to make code simpler. > > Signed-off-by: Chuhong Yuan Reviewed-by: Patrick Havelange Maybe a bit too late, sorry for that. Thanks for the patch. Patrick H. > --- > Changes in v2: > - Use devm_add_action_or_reset to keep > resource release order. > - remove() function is redundant now, > delete it. > > drivers/counter/ftm-quaddec.c | 30 ++++++++++++------------------ > 1 file changed, 12 insertions(+), 18 deletions(-) > > diff --git a/drivers/counter/ftm-quaddec.c b/drivers/counter/ftm-quaddec.c > index 68a9b7393457..4046aa9f9234 100644 > --- a/drivers/counter/ftm-quaddec.c > +++ b/drivers/counter/ftm-quaddec.c > @@ -100,16 +100,18 @@ static void ftm_quaddec_init(struct ftm_quaddec *ftm) > ftm_set_write_protection(ftm); > } > > -static void ftm_quaddec_disable(struct ftm_quaddec *ftm) > +static void ftm_quaddec_disable(void *ftm) > { > - ftm_clear_write_protection(ftm); > - ftm_write(ftm, FTM_MODE, 0); > - ftm_write(ftm, FTM_QDCTRL, 0); > + struct ftm_quaddec *ftm_qua = ftm; > + > + ftm_clear_write_protection(ftm_qua); > + ftm_write(ftm_qua, FTM_MODE, 0); > + ftm_write(ftm_qua, FTM_QDCTRL, 0); > /* > * This is enough to disable the counter. No clock has been > * selected by writing to FTM_SC in init() > */ > - ftm_set_write_protection(ftm); > + ftm_set_write_protection(ftm_qua); > } > > static int ftm_quaddec_get_prescaler(struct counter_device *counter, > @@ -317,20 +319,13 @@ static int ftm_quaddec_probe(struct platform_device *pdev) > > ftm_quaddec_init(ftm); > > - ret = counter_register(&ftm->counter); > + ret = devm_add_action_or_reset(&pdev->dev, ftm_quaddec_disable, ftm); > if (ret) > - ftm_quaddec_disable(ftm); > - > - return ret; > -} > + return ret; > > -static int ftm_quaddec_remove(struct platform_device *pdev) > -{ > - struct ftm_quaddec *ftm = platform_get_drvdata(pdev); > - > - counter_unregister(&ftm->counter); > - > - ftm_quaddec_disable(ftm); > + ret = devm_counter_register(&pdev->dev, &ftm->counter); > + if (ret) > + return ret; > > return 0; > } > @@ -346,7 +341,6 @@ static struct platform_driver ftm_quaddec_driver = { > .of_match_table = ftm_quaddec_match, > }, > .probe = ftm_quaddec_probe, > - .remove = ftm_quaddec_remove, > }; > > module_platform_driver(ftm_quaddec_driver); > -- > 2.20.1 >