From patchwork Sun Jun 2 14:19:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Pernamitta X-Patchwork-Id: 10971769 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 55A151575 for ; Sun, 2 Jun 2019 14:20:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3B23B2850D for ; Sun, 2 Jun 2019 14:20:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2D4362860C; Sun, 2 Jun 2019 14:20:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C074A2850D for ; Sun, 2 Jun 2019 14:20:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726084AbfFBOUO (ORCPT ); Sun, 2 Jun 2019 10:20:14 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:32780 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726290AbfFBOUO (ORCPT ); Sun, 2 Jun 2019 10:20:14 -0400 Received: by mail-pg1-f193.google.com with SMTP id h17so6761216pgv.0; Sun, 02 Jun 2019 07:20:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=gm5OUfBYt2rZ5++CvxJbeV901kE7mvqiml3mou2FzOk=; b=Z5fzM2KJ5F1WEsd1lSFWNKX6OqhyWzXe6/ML/6sT0TpxmiZpPVbVB8JX8jcN+0TXhg 5ahR1zt59qVEUo+vuWi5FcX6ly+RPVcNaXGftC6b/rCGIGfr+1L5QTZUUmJnSZD3Ipjp BIOAlE3XoXQUwxq2pMZJ1CgNBa0Y9OYfSreEweoheCfycVQ/P80hsVA+jLZW42T05hkW tnotpMoTGoNNbNhPP3SWMBKUd+n3Qf5NVX+44NUOiMGfpmPCfTD7PakorNXAFmyQ/OXr ccHz/8gFsZz0spMvIFF7b3itr1CnGE7WJbdNhT2RTdpYmqXDLGHocHr6SPBre3eEUVYP Gzvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=gm5OUfBYt2rZ5++CvxJbeV901kE7mvqiml3mou2FzOk=; b=dqjxR8D4l1qjYiNKznLAwZD9vTRmYLBmNI/6gJt4FJ7z7sRPOSVTcpzLmJB73I7Rv8 vOlzPVAOGfDId+m5AaUoGirSZFwnlH2YFTeu9rcZGKO+f5yK63IyZba95+Nem56fb18y LLUW7UbZ++CUMm6Vj6T/CUHX1FdRAp3OfZuMZh0Rjm2lZcVLP+KbCSBDHQ5GgtEMiOmQ v9EkdOu4SuwsBujpmmBrXOb7bCe7OS45DTDFZYnAIqaz+/qnWYnVDtXCBVSTcpquAiGw gM6clwL2w+vgXbhDw1WtAtXVXA2spd4DkptQ0VVx3L9qQiBdLqQ92tJlQzmXYQ54ztYU dxUQ== X-Gm-Message-State: APjAAAWOZIbhwHXwNXN+WeALqJ33RsADAzTOJ75AkdRoVyd2dar88n/G 2flGU7C0DQAgiW0Tc4lWgdi0lnCS X-Google-Smtp-Source: APXvYqwQ1RTfwGwrUl833DLpdfu8jg+jL7nudr1ZHjRyUrACslFw0tE59equcReVwjWa1/bqXCDjJA== X-Received: by 2002:a63:eb03:: with SMTP id t3mr22548381pgh.315.1559485213155; Sun, 02 Jun 2019 07:20:13 -0700 (PDT) Received: from localhost.localdomain ([27.7.2.234]) by smtp.googlemail.com with ESMTPSA id t33sm11768133pjb.1.2019.06.02.07.20.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 02 Jun 2019 07:20:12 -0700 (PDT) From: Vivek Pernamitta Cc: pervivek@gmail.com, Mark Brown , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] spi: spidev: Fix for reverting spi max speed value only on failure Date: Sun, 2 Jun 2019 19:49:59 +0530 Message-Id: <20190602141959.5616-1-pervivek@gmail.com> X-Mailer: git-send-email 2.17.1 To: unlisted-recipients:; (no To-header on input) Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When user space application request for change in spi clock using ioctl, current value is taken back-up and new value is assigned to spi->max_speed_hz, then spi_setup() function is called with new value. If spi_setup() function fails, it needs reverting to old spi_max_speed value only in failure condition. Signed-off-by: Vivek Pernamitta --- drivers/spi/spidev.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index 30498cf25f3b..70382b642f37 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -458,9 +458,10 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) retval = spi_setup(spi); if (retval >= 0) spidev->speed_hz = tmp; - else + else { dev_dbg(&spi->dev, "%d Hz (max)\n", tmp); - spi->max_speed_hz = save; + spi->max_speed_hz = save; + } } break;