From patchwork Sat May 18 22:15:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tallys Martins X-Patchwork-Id: 10949203 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 EFDAF1395 for ; Sat, 18 May 2019 22:15:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D11A328553 for ; Sat, 18 May 2019 22:15:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BE31A2856E; Sat, 18 May 2019 22:15:47 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 5516128553 for ; Sat, 18 May 2019 22:15:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726467AbfERWPp (ORCPT ); Sat, 18 May 2019 18:15:45 -0400 Received: from mail-qk1-f193.google.com ([209.85.222.193]:38958 "EHLO mail-qk1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726407AbfERWPp (ORCPT ); Sat, 18 May 2019 18:15:45 -0400 Received: by mail-qk1-f193.google.com with SMTP id z128so6656227qkb.6 for ; Sat, 18 May 2019 15:15:44 -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:mime-version :content-transfer-encoding; bh=VQnfKzjzaG+uZvRSHThCQoJsbxO/n61UBy9RgELTA98=; b=PAKVISkzwJ5T2He6DaDVTk62VAoDDmjsq4gRScVC9c6xB8c8oHFN6MMy/NS5xEIAsj 2jtvRf/Zb2gsuZeXkmSWcko7r9zcgVJV8xA/gtafRw/a2d1zjpxQiZPAKGm01YbMa5hw 7b+eEM67Z56GaIDemU1f1CZQO3+zcKAuj0Xy4CjI6POUNA0AcYV0jDeC3SL79o8QM2f2 /CqPSp+0O8nK4xZscwD58mIvR8EPTG8J9WzW6ho27Da0UbEDX8oAy94zetH38s5g/QA3 V4LYcOW7D0NP2gXniOPq9uDqcZZnMS2XgIfjsd2xDWnPK8kctViDPhmQ/q3zGeAc740W +C2Q== 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:mime-version :content-transfer-encoding; bh=VQnfKzjzaG+uZvRSHThCQoJsbxO/n61UBy9RgELTA98=; b=rl8GUU3IqbSxmIIfn90kJv4EJC0IRElj7u9MDOs8V3ON2xaaiZGUW9B3kpGiPfd1cr XrGVLiI1FSiIj8Qh8u/14smCSl398I/QSetjCvmGl1y6/YmOtx31eXgqkDWT5SO81dNv y3apjbC0GEn1sUkeeLhCS4T+EVSOmSUqeZNABiyi4pCRNapQTU+66Gx6mp0zMyvWLJlr VMdP17CbSVImw3enl1CRiTx5r27gkqL3hUGi1j7cgE16YZFMdcA0g7iDkC3p9TGTtjeu mzr99yb9jdKHW0fJB61RjneyAfRi1OM5mkWr8wFxArw3OaTFOW1y6Eb02Kw6pt0Cg0Mf +frw== X-Gm-Message-State: APjAAAWaAyGzKXmRpeK5x6kmO1z6PHiEgAyKE48B3PxjtqA3v3ezwkrv 21Tals7QMaTuExqB/rWiN6/omLm3v6c= X-Google-Smtp-Source: APXvYqxBkVhxgY/rgfa5p5eccTrAjRGD6+Szn4GI1H6Du8hcgi6IUavWG+vwlEajhjPzGxS5NJVM0Q== X-Received: by 2002:ae9:f70d:: with SMTP id s13mr52473452qkg.213.1558217744110; Sat, 18 May 2019 15:15:44 -0700 (PDT) Received: from tallys-pc.ime.usp.br ([143.107.45.1]) by smtp.gmail.com with ESMTPSA id s17sm7702970qke.60.2019.05.18.15.15.39 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sat, 18 May 2019 15:15:43 -0700 (PDT) From: Tallys Martins To: Lars-Peter Clausen , Michael Hennerich , Stefan Popa , Jonathan Cameron , Hartmut Knaack , Peter Meerwald-Stadler , Greg Kroah-Hartman Cc: linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.or, kernel-usp@googlegroups.com, Tallys Martins , Souza Guilherme Subject: [PATCH 1/2] staging: iio: ad2s1210: Destroy mutex at remove Date: Sat, 18 May 2019 19:15:57 -0300 Message-Id: <20190518221558.21799-1-tallysmartins@gmail.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Ensure the mutex will be destroyed on drive removal. Also adds mutex comment description. Signed-off-by: Tallys Martins Signed-off-by: Souza Guilherme Co-developed-by: Souza Guilherme --- drivers/staging/iio/resolver/ad2s1210.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c index b6be0bc202f5..b91cf57c5e57 100644 --- a/drivers/staging/iio/resolver/ad2s1210.c +++ b/drivers/staging/iio/resolver/ad2s1210.c @@ -86,7 +86,7 @@ static const struct ad2s1210_gpio gpios[] = { static const unsigned int ad2s1210_resolution_value[] = { 10, 12, 14, 16 }; struct ad2s1210_state { - struct mutex lock; + struct mutex lock; /* lock to protect the state on r/w operations */ struct spi_device *sdev; struct gpio_desc *gpios[5]; unsigned int fclkin; @@ -689,8 +689,10 @@ static int ad2s1210_probe(struct spi_device *spi) static int ad2s1210_remove(struct spi_device *spi) { struct iio_dev *indio_dev = spi_get_drvdata(spi); + struct ad2s1210_state *ad2s1210_ad = iio_priv(indio_dev); iio_device_unregister(indio_dev); + mutex_destroy(&ad2s1210_ad->lock); return 0; }