From patchwork Tue Feb 17 22:01:04 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 5841721 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3AE77BF440 for ; Tue, 17 Feb 2015 22:04:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 338122024F for ; Tue, 17 Feb 2015 22:04:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 26BD0201FE for ; Tue, 17 Feb 2015 22:03:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751724AbbBQWBH (ORCPT ); Tue, 17 Feb 2015 17:01:07 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:33642 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752485AbbBQWBG (ORCPT ); Tue, 17 Feb 2015 17:01:06 -0500 Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id 61578140AF4; Tue, 17 Feb 2015 22:01:05 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 486) id 4F074140AF7; Tue, 17 Feb 2015 22:01:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from [10.134.64.202] (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: sboyd@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 81D02140AF4; Tue, 17 Feb 2015 22:01:04 +0000 (UTC) Message-ID: <54E3BA20.3080205@codeaurora.org> Date: Tue, 17 Feb 2015 14:01:04 -0800 From: Stephen Boyd User-Agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Quentin Lambert , Mike Turquette , Julia Lawall CC: Paul Walmsley , Tomeu Vizoso , Tony Lindgren , linux-kernel@vger.kernel.org, t-kristo@ti.com, linux-omap@vger.kernel.org, cocci@systeme.lip6.fr, linux-arm-kernel@lists.infradead.org Subject: Re: [Cocci] [PATCH v13 3/6] clk: Make clk API return per-user struct clk instances References: <1422011024-32283-1-git-send-email-tomeu.vizoso@collabora.com> <1422011024-32283-4-git-send-email-tomeu.vizoso@collabora.com> <20150201212432.22722.70917@quantum> <54CFE1FE.7040404@codeaurora.org> <54CFFBCF.90706@codeaurora.org> <20150202225036.421.43421@quantum> <54D0F179.1040906@gmail.com> <54D2AA9B.7010800@codeaurora.org> <54D3900A.9060200@gmail.com> <54D423C3.9030105@codeaurora.org> In-Reply-To: <54D423C3.9030105@codeaurora.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On 02/05/15 18:15, Stephen Boyd wrote: > On 02/05/15 07:45, Quentin Lambert wrote: >> On 05/02/2015 00:26, Stephen Boyd wrote: >>>> If you want me to I can enlarge the search to other directories. >>> Yes please do. And if you could share the coccinelle patch that would be >>> great. Thanks. >>> >> structclk.cocci is the coccinelle patch >> structclk-arm.patch is the result I got when applying it to the >> arch/arm directory >> >> Is there anything else I can do to help? >> >> > Thanks for the coccinelle patch. Thinking more about it, I don't think > we care if the pointer is dereferenced because that would require a > definition of struct clk and that is most likely not the case outside of > the clock framework. Did you scan the entire kernel? I'm running it now > but it seems to be taking a while. > I ran the script on all files that include . I've also trimmed out mips and unicore32 because they're not using the common clock framework. sound/soc/kirkwood/kirkwood-i2s.c:582:6-18: WARNING trying to compare or dereference struct clk pointers. diff = --- arch/arm/mach-imx/mach-imx6q.c +++ /tmp/cocci-output-11792-b62223-mach-imx6q.c @@ -211,7 +211,6 @@ static void __init imx6q_1588_init(void) * set bit IOMUXC_GPR1[21]. Or the PTP clock must be from pad * (external OSC), and we need to clear the bit. */ - clksel = ptp_clk == enet_ref ? IMX6Q_GPR1_ENET_CLK_SEL_ANATOP : IMX6Q_GPR1_ENET_CLK_SEL_PAD; gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr"); if (!IS_ERR(gpr)) diff = --- drivers/gpu/drm/armada/armada_510.c +++ /tmp/cocci-output-12321-a5f298-armada_510.c @@ -53,7 +53,6 @@ static int armada510_crtc_compute_clock( if (IS_ERR(clk)) return PTR_ERR(clk); - if (dcrtc->clk != clk) { ret = clk_prepare_enable(clk); if (ret) return ret; drivers/gpu/drm/armada/armada_510.c:56:5-15: WARNING trying to compare or dereference struct clk pointers. diff = --- drivers/pwm/pwm-atmel-hlcdc.c +++ /tmp/cocci-output-12679-3c5195-pwm-atmel-hlcdc.c @@ -91,7 +91,6 @@ static int atmel_hlcdc_pwm_config(struct pwmcfg = ATMEL_HLCDC_PWMPS(pres); - if (new_clk != chip->cur_clk) { u32 gencfg = 0; int ret; drivers/pwm/pwm-atmel-hlcdc.c:94:5-12: WARNING trying to compare or dereference struct clk pointers. diff = --- drivers/tty/serial/samsung.c +++ /tmp/cocci-output-12827-715e72-samsung.c @@ -750,7 +750,6 @@ static void s3c24xx_serial_set_termios(s /* check to see if we need to change clock source */ - if (ourport->baudclk != clk) { s3c24xx_serial_setsource(port, clk_sel); if (!IS_ERR(ourport->baudclk)) { drivers/tty/serial/samsung.c:753:5-21: WARNING trying to compare or dereference struct clk pointers. diff = --- sound/soc/fsl/fsl_esai.c +++ /tmp/cocci-output-13020-d518c3-fsl_esai.c @@ -269,7 +269,6 @@ static int fsl_esai_set_dai_sysclk(struc } /* Only EXTAL source can be output directly without using PSR and PM */ - if (ratio == 1 && clksrc == esai_priv->extalclk) { /* Bypass all the dividers if not being needed */ ecr |= tx ? ESAI_ECR_ETO : ESAI_ECR_ERO; goto out; sound/soc/fsl/fsl_esai.c:272:19-25: WARNING trying to compare or dereference struct clk pointers. diff = --- sound/soc/fsl/fsl_spdif.c +++ /tmp/cocci-output-13024-7acb1d-fsl_spdif.c @@ -1054,7 +1054,6 @@ static u32 fsl_spdif_txclk_caldiv(struct enum spdif_txrate index, bool round) { const u32 rate[] = { 32000, 44100, 48000, 96000, 192000 }; - bool is_sysclk = clk == spdif_priv->sysclk; u64 rate_ideal, rate_actual, sub; u32 sysclk_dfmin, sysclk_dfmax; u32 txclk_df, sysclk_df, arate; @@ -1148,7 +1147,6 @@ static int fsl_spdif_probe_txclk(struct spdif_priv->txclk_src[index], rate[index]); dev_dbg(&pdev->dev, "use txclk df %d for %dHz sample rate\n", spdif_priv->txclk_df[index], rate[index]); - if (spdif_priv->txclk[index] == spdif_priv->sysclk) dev_dbg(&pdev->dev, "use sysclk df %d for %dHz sample rate\n", spdif_priv->sysclk_df[index], rate[index]); dev_dbg(&pdev->dev, "the best rate for %dHz sample rate is %dHz\n", sound/soc/fsl/fsl_spdif.c:1151:5-29: WARNING trying to compare or dereference struct clk pointers. sound/soc/fsl/fsl_spdif.c:1057:18-21: WARNING trying to compare or dereference struct clk pointers. diff = --- sound/soc/kirkwood/kirkwood-i2s.c +++ /tmp/cocci-output-13041-3200a6-kirkwood-i2s.c @@ -579,7 +579,6 @@ static int kirkwood_i2s_dev_probe(struct if (PTR_ERR(priv->extclk) == -EPROBE_DEFER) return -EPROBE_DEFER; } else { - if (priv->extclk == priv->clk) { devm_clk_put(&pdev->dev, priv->extclk); priv->extclk = ERR_PTR(-EINVAL); } else {