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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D0E4C433F5 for ; Mon, 10 Jan 2022 11:23:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239620AbiAJLX4 (ORCPT ); Mon, 10 Jan 2022 06:23:56 -0500 Received: from mga06.intel.com ([134.134.136.31]:48884 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244635AbiAJLXy (ORCPT ); Mon, 10 Jan 2022 06:23:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1641813834; x=1673349834; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version; bh=5FKGGuHZO0C6k1n4LzoMsAmNJBJp1CJVtRjeeFRRNQw=; b=IMDPShTx8RvQh3u7xRqWUOgdBszexoLTm6y/rRdK5iMi0manRQP/NxWo Z00pRyuh+1O08tukDQysmr1IToRIDUrYoF6nQNIX5J2qMm88qBURHqO8M KMMD2Je60vbzRiCqEk43ex8RF3UT/sbC25d8KEdCM7EtXUapVsWJSited FzoOoGrrz9bAToCSIp3sWnMjSDhTHMEcv5gR8M5LAsUJAAfyAkBj+eM1i /qgYfPeaTbchJgvM2zbYQ9cuSxrvi8vwxgf6ie8lzoLVYuBe5zmZ1wgYV wmswKtTrPtKDPIUgxHBxo3f0e4raBSsulPAi6uIugGPQD30vhZcCmzttd g==; X-IronPort-AV: E=McAfee;i="6200,9189,10222"; a="303945754" X-IronPort-AV: E=Sophos;i="5.88,276,1635231600"; d="scan'208";a="303945754" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jan 2022 03:23:54 -0800 X-IronPort-AV: E=Sophos;i="5.88,276,1635231600"; d="scan'208";a="557954576" Received: from bdoyle2-mobl1.ger.corp.intel.com (HELO localhost) ([10.252.26.184]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jan 2022 03:23:49 -0800 From: Jani Nikula To: Stephen Boyd , Douglas Anderson , Greg Kroah-Hartman Cc: Saravana Kannan , "Rafael J. Wysocki" , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Laurent Pinchart , Daniel Vetter , Russell King , freedreno@lists.freedesktop.org, Ingo Molnar Subject: Re: [PATCH v5 03/32] component: Move struct aggregate_device out to header file In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20220106214556.2461363-1-swboyd@chromium.org> <20220106214556.2461363-4-swboyd@chromium.org> <87pmp3lmmo.fsf@intel.com> Date: Mon, 10 Jan 2022 13:23:46 +0200 Message-ID: <87a6g3al6l.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On Fri, 07 Jan 2022, Stephen Boyd wrote: > Quoting Jani Nikula (2022-01-07 05:07:59) >> On Thu, 06 Jan 2022, Stephen Boyd wrote: >> > This allows aggregate driver writers to use the device passed to their >> > probe/remove/shutdown functions properly instead of treating it as an >> > opaque pointer. >> >> You say it like having opaque pointers with interfaces instead of >> exposed data is a bad thing. > > I didn't intend to convey that message at all and in fact I didn't write > that opaque pointers are a bad thing. > >> >> Data is not an interface. IMO if you can get by with keeping the types >> private, go for it. Unless I'm missing something, you only need the >> parent dev pointer. Maybe add a helper function for it? > > Sure I'll add a function for that. > >> >> It's trivial to expose the guts like this, but it's usually a lot of >> hard work to go the other way. Look at the dependencies of component.h >> now. To keep it self-contained, i.e. buildable without implicit >> dependencies, you'd need to add #include , which goes on to >> include the world. Then have a look at [1]. >> >> Please at least let's not do this lightly. >> > > Got it. Thanks! How does this look? Thanks, I think this is better. BR, Jani. > > ---8<--- > diff --git a/drivers/base/component.c b/drivers/base/component.c > index cd50137753b4..e8f09945c261 100644 > --- a/drivers/base/component.c > +++ b/drivers/base/component.c > @@ -56,6 +56,27 @@ struct component_match { > struct component_match_array *compare; > }; > > +struct aggregate_device { > + const struct component_master_ops *ops; > + struct device *parent; > + struct device dev; > + struct component_match *match; > + struct aggregate_driver *adrv; > + > + int id; > +}; > + > +static inline struct aggregate_device *to_aggregate_device(struct device *d) > +{ > + return container_of(d, struct aggregate_device, dev); > +} > + > +struct device *aggregate_device_parent(struct aggregate_device *adev) > +{ > + return adev->parent; > +} > +EXPORT_SYMBOL_GPL(aggregate_device_parent); > + > struct component { > struct list_head node; > struct aggregate_device *adev; > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c > b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c > index 0463386a6ed2..5fa868cf9825 100644 > --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c > @@ -27,7 +27,7 @@ struct komeda_dev *dev_to_mdev(struct device *dev) > > static void komeda_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct komeda_drv *mdrv = dev_get_drvdata(dev); > > if (!mdrv) > @@ -48,7 +48,7 @@ static void komeda_unbind(struct aggregate_device *adev) > > static int komeda_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct komeda_drv *mdrv; > int err; > > diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c > index 5c03eb98d814..e3ed925797d5 100644 > --- a/drivers/gpu/drm/arm/hdlcd_drv.c > +++ b/drivers/gpu/drm/arm/hdlcd_drv.c > @@ -272,7 +272,7 @@ static const struct drm_driver hdlcd_driver = { > > static int hdlcd_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm; > struct hdlcd_drm_private *hdlcd; > int ret; > @@ -347,7 +347,7 @@ static int hdlcd_drm_bind(struct aggregate_device *adev) > > static void hdlcd_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > struct hdlcd_drm_private *hdlcd = drm->dev_private; > > diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c > index e6ee4d1e3bb8..7b946b962b22 100644 > --- a/drivers/gpu/drm/arm/malidp_drv.c > +++ b/drivers/gpu/drm/arm/malidp_drv.c > @@ -704,7 +704,7 @@ static int malidp_runtime_pm_resume(struct device *dev) > > static int malidp_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct resource *res; > struct drm_device *drm; > struct malidp_drm *malidp; > @@ -897,7 +897,7 @@ static int malidp_bind(struct aggregate_device *adev) > > static void malidp_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > struct malidp_drm *malidp = drm->dev_private; > struct malidp_hw_device *hwdev = malidp->dev; > diff --git a/drivers/gpu/drm/armada/armada_drv.c > b/drivers/gpu/drm/armada/armada_drv.c > index b3559363ea43..27739cbe2291 100644 > --- a/drivers/gpu/drm/armada/armada_drv.c > +++ b/drivers/gpu/drm/armada/armada_drv.c > @@ -62,7 +62,7 @@ static const struct drm_mode_config_funcs > armada_drm_mode_config_funcs = { > > static int armada_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct armada_private *priv; > struct resource *mem = NULL; > int ret, n; > @@ -162,7 +162,7 @@ static int armada_drm_bind(struct aggregate_device *adev) > > static void armada_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > struct armada_private *priv = drm_to_armada_dev(drm); > > diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c > b/drivers/gpu/drm/etnaviv/etnaviv_drv.c > index 95d1e518ff13..2ea655fd7a70 100644 > --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c > +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c > @@ -496,7 +496,7 @@ static const struct drm_driver etnaviv_drm_driver = { > */ > static int etnaviv_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct etnaviv_drm_private *priv; > struct drm_device *drm; > int ret; > @@ -555,7 +555,7 @@ static int etnaviv_bind(struct aggregate_device *adev) > > static void etnaviv_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > struct etnaviv_drm_private *priv = drm->dev_private; > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c > b/drivers/gpu/drm/exynos/exynos_drm_drv.c > index dcb52ec2bd35..f58c3069b591 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c > @@ -255,7 +255,7 @@ static struct component_match > *exynos_drm_match_add(struct device *dev) > > static int exynos_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct exynos_drm_private *private; > struct drm_encoder *encoder; > struct drm_device *drm; > @@ -333,7 +333,7 @@ static int exynos_drm_bind(struct aggregate_device *adev) > > static void exynos_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > > drm_dev_unregister(drm); > diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c > b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c > index 00d47c784cbb..338077908177 100644 > --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c > +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c > @@ -219,7 +219,7 @@ static int kirin_drm_kms_cleanup(struct drm_device *dev) > > static int kirin_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct kirin_drm_data *driver_data; > struct drm_device *drm_dev; > int ret; > @@ -256,7 +256,7 @@ static int kirin_drm_bind(struct aggregate_device *adev) > > static void kirin_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm_dev = dev_get_drvdata(dev); > > drm_dev_unregister(drm_dev); > diff --git a/drivers/gpu/drm/imx/imx-drm-core.c > b/drivers/gpu/drm/imx/imx-drm-core.c > index 9e28bb16364c..82645e42b7d3 100644 > --- a/drivers/gpu/drm/imx/imx-drm-core.c > +++ b/drivers/gpu/drm/imx/imx-drm-core.c > @@ -198,7 +198,7 @@ static int compare_of(struct device *dev, void *data) > > static int imx_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm; > int ret; > > @@ -267,7 +267,7 @@ static int imx_drm_bind(struct aggregate_device *adev) > > static void imx_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > > drm_dev_unregister(drm); > diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c > b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c > index d5330fb486e8..db61efc35b2d 100644 > --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c > +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c > @@ -1152,7 +1152,7 @@ static int ingenic_drm_bind(struct device *dev, > bool has_components) > > static int ingenic_drm_bind_with_components(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > > return ingenic_drm_bind(dev, true); > } > @@ -1178,7 +1178,7 @@ static void ingenic_drm_unbind(struct device *dev) > > static void ingenic_aggregate_remove(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > > ingenic_drm_unbind(dev); > } > diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c > index 1652f9e0601d..b8479355844e 100644 > --- a/drivers/gpu/drm/mcde/mcde_drv.c > +++ b/drivers/gpu/drm/mcde/mcde_drv.c > @@ -217,7 +217,7 @@ static const struct drm_driver mcde_drm_driver = { > > static int mcde_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > int ret; > > @@ -250,7 +250,7 @@ static int mcde_drm_bind(struct aggregate_device *adev) > > static void mcde_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > > drm_dev_unregister(drm); > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c > b/drivers/gpu/drm/mediatek/mtk_drm_drv.c > index a3f27b8c9769..af0dda5e45bf 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c > @@ -350,7 +350,7 @@ static int compare_of(struct device *dev, void *data) > > static int mtk_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct mtk_drm_private *private = dev_get_drvdata(dev); > struct drm_device *drm; > int ret; > @@ -383,7 +383,7 @@ static int mtk_drm_bind(struct aggregate_device *adev) > > static void mtk_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct mtk_drm_private *private = dev_get_drvdata(dev); > > drm_dev_unregister(private->drm); > diff --git a/drivers/gpu/drm/meson/meson_drv.c > b/drivers/gpu/drm/meson/meson_drv.c > index 3028f2a45f66..426caea3d570 100644 > --- a/drivers/gpu/drm/meson/meson_drv.c > +++ b/drivers/gpu/drm/meson/meson_drv.c > @@ -358,14 +358,14 @@ static int meson_drv_bind_master(struct device > *dev, bool has_components) > > static int meson_drv_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > > return meson_drv_bind_master(dev, true); > } > > static void meson_drv_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct meson_drm *priv = dev_get_drvdata(dev); > struct drm_device *drm = priv->drm; > > diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c > index f6e9b0d318f5..b2735355ea81 100644 > --- a/drivers/gpu/drm/msm/msm_drv.c > +++ b/drivers/gpu/drm/msm/msm_drv.c > @@ -1362,17 +1362,19 @@ static int add_gpu_components(struct device *dev, > > static int msm_drm_bind(struct aggregate_device *adev) > { > - return msm_drm_init(adev->parent, &msm_driver); > + return msm_drm_init(aggregate_device_parent(adev), &msm_driver); > } > > static void msm_drm_unbind(struct aggregate_device *adev) > { > - msm_drm_uninit(adev->parent); > + msm_drm_uninit(aggregate_device_parent(adev)); > } > > static void msm_drm_shutdown(struct aggregate_device *adev) > { > - struct drm_device *drm = > platform_get_drvdata(to_platform_device(adev->parent)); > + const struct device *parent = aggregate_device_parent(adev); > + const struct platform_device *pdev = to_platform_device(parent); > + struct drm_device *drm = platform_get_drvdata(pdev); > struct msm_drm_private *priv = drm ? drm->dev_private : NULL; > > if (!priv || !priv->kms) > diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c > b/drivers/gpu/drm/omapdrm/dss/dss.c > index 9328d97f19ab..6226ef389694 100644 > --- a/drivers/gpu/drm/omapdrm/dss/dss.c > +++ b/drivers/gpu/drm/omapdrm/dss/dss.c > @@ -1306,7 +1306,7 @@ static const struct soc_device_attribute > dss_soc_devices[] = { > > static int dss_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct dss_device *dss = dev_get_drvdata(dev); > struct platform_device *drm_pdev; > struct dss_pdata pdata; > @@ -1333,7 +1333,7 @@ static int dss_bind(struct aggregate_device *adev) > > static void dss_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct dss_device *dss = dev_get_drvdata(dev); > > platform_device_unregister(dss->drm_pdev); > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c > b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c > index 6c755361d376..5179ca899dbb 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c > @@ -111,7 +111,7 @@ static void rockchip_iommu_cleanup(struct > drm_device *drm_dev) > > static int rockchip_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm_dev; > struct rockchip_drm_private *private; > int ret; > @@ -186,7 +186,7 @@ static int rockchip_drm_bind(struct aggregate_device *adev) > > static void rockchip_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm_dev = dev_get_drvdata(dev); > > drm_dev_unregister(drm_dev); > diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c > index b277cc679154..958db315d547 100644 > --- a/drivers/gpu/drm/sti/sti_drv.c > +++ b/drivers/gpu/drm/sti/sti_drv.c > @@ -184,7 +184,7 @@ static void sti_cleanup(struct drm_device *ddev) > > static int sti_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *ddev; > int ret; > > @@ -219,7 +219,7 @@ static int sti_bind(struct aggregate_device *adev) > > static void sti_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *ddev = dev_get_drvdata(dev); > > drm_dev_unregister(ddev); > diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c > b/drivers/gpu/drm/sun4i/sun4i_drv.c > index 700f5e32eaf7..35c5e575132f 100644 > --- a/drivers/gpu/drm/sun4i/sun4i_drv.c > +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c > @@ -58,7 +58,7 @@ static const struct drm_driver sun4i_drv_driver = { > > static int sun4i_drv_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm; > struct sun4i_drv *drv; > int ret; > @@ -128,7 +128,7 @@ static int sun4i_drv_bind(struct aggregate_device *adev) > > static void sun4i_drv_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > > drm_dev_unregister(drm); > diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c > b/drivers/gpu/drm/tilcdc/tilcdc_drv.c > index 92ff516fb6de..c12c579ce66f 100644 > --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c > +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c > @@ -531,14 +531,14 @@ static const struct dev_pm_ops tilcdc_pm_ops = { > */ > static int tilcdc_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > > return tilcdc_init(&tilcdc_driver, dev); > } > > static void tilcdc_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *ddev = dev_get_drvdata(dev); > > /* Check if a subcomponent has already triggered the unloading. */ > diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c > index 82a44ebf9121..297ecddea5fb 100644 > --- a/drivers/gpu/drm/vc4/vc4_drv.c > +++ b/drivers/gpu/drm/vc4/vc4_drv.c > @@ -214,7 +214,7 @@ static void vc4_match_add_drivers(struct device *dev, > > static int vc4_drm_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct platform_device *pdev = to_platform_device(dev); > struct drm_device *drm; > struct vc4_dev *vc4; > @@ -287,7 +287,7 @@ static int vc4_drm_bind(struct aggregate_device *adev) > > static void vc4_drm_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_device *drm = dev_get_drvdata(dev); > > drm_dev_unregister(drm); > diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h > index 064fd4f4eade..125be5819c42 100644 > --- a/drivers/iommu/mtk_iommu.h > +++ b/drivers/iommu/mtk_iommu.h > @@ -96,7 +96,7 @@ static inline void release_of(struct device *dev, void *data) > > static inline int mtk_iommu_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct mtk_iommu_data *data = dev_get_drvdata(dev); > > return component_bind_all(dev, &data->larb_imu); > @@ -104,7 +104,7 @@ static inline int mtk_iommu_bind(struct > aggregate_device *adev) > > static inline void mtk_iommu_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct mtk_iommu_data *data = dev_get_drvdata(dev); > > component_unbind_all(dev, &data->larb_imu); > diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c > index ae903a09fb06..3c6e4e3bf212 100644 > --- a/drivers/misc/mei/hdcp/mei_hdcp.c > +++ b/drivers/misc/mei/hdcp/mei_hdcp.c > @@ -734,7 +734,7 @@ static const struct i915_hdcp_component_ops mei_hdcp_ops = { > > static int mei_hdcp_aggregate_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct mei_cl_device *cldev = to_mei_cl_device(dev); > struct i915_hdcp_comp_master *comp_master = > mei_cldev_get_drvdata(cldev); > @@ -752,7 +752,7 @@ static int mei_hdcp_aggregate_bind(struct > aggregate_device *adev) > > static void mei_hdcp_aggregate_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct mei_cl_device *cldev = to_mei_cl_device(dev); > struct i915_hdcp_comp_master *comp_master = > mei_cldev_get_drvdata(cldev); > diff --git a/drivers/misc/mei/pxp/mei_pxp.c b/drivers/misc/mei/pxp/mei_pxp.c > index 7b7bd7c0e8b1..887e43e6ba5f 100644 > --- a/drivers/misc/mei/pxp/mei_pxp.c > +++ b/drivers/misc/mei/pxp/mei_pxp.c > @@ -85,7 +85,7 @@ static const struct i915_pxp_component_ops mei_pxp_ops = { > > static int mei_pxp_aggregate_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct mei_cl_device *cldev = to_mei_cl_device(dev); > struct i915_pxp_component *comp_master = mei_cldev_get_drvdata(cldev); > int ret; > @@ -101,7 +101,7 @@ static int mei_pxp_aggregate_bind(struct > aggregate_device *adev) > > static void mei_pxp_aggregate_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct mei_cl_device *cldev = to_mei_cl_device(dev); > struct i915_pxp_component *comp_master = mei_cldev_get_drvdata(cldev); > > diff --git a/drivers/power/supply/ab8500_charger.c > b/drivers/power/supply/ab8500_charger.c > index 52d4105e28f2..e1e5c9387b57 100644 > --- a/drivers/power/supply/ab8500_charger.c > +++ b/drivers/power/supply/ab8500_charger.c > @@ -3314,7 +3314,7 @@ static const struct power_supply_desc > ab8500_usb_chg_desc = { > > static int ab8500_charger_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct ab8500_charger *di = dev_get_drvdata(dev); > int ch_stat; > int ret; > @@ -3357,7 +3357,7 @@ static int ab8500_charger_bind(struct > aggregate_device *adev) > > static void ab8500_charger_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct ab8500_charger *di = dev_get_drvdata(dev); > int ret; > > diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dss.c > b/drivers/video/fbdev/omap2/omapfb/dss/dss.c > index f12663c39ceb..0bdb9f909992 100644 > --- a/drivers/video/fbdev/omap2/omapfb/dss/dss.c > +++ b/drivers/video/fbdev/omap2/omapfb/dss/dss.c > @@ -1069,7 +1069,7 @@ static int dss_video_pll_probe(struct > platform_device *pdev) > /* DSS HW IP initialisation */ > static int dss_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct platform_device *pdev = to_platform_device(dev); > struct resource *dss_mem; > u32 rev; > @@ -1170,7 +1170,7 @@ static int dss_bind(struct aggregate_device *adev) > > static void dss_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct platform_device *pdev = to_platform_device(dev); > > dss_initialized = false; > diff --git a/include/linux/component.h b/include/linux/component.h > index 07fe481d4e3b..7c86f4cc718e 100644 > --- a/include/linux/component.h > +++ b/include/linux/component.h > @@ -8,6 +8,8 @@ > struct component_match; > struct aggregate_device; > > +struct device *aggregate_device_parent(struct aggregate_device *adev); > + > /** > * struct component_ops - callbacks for component drivers > * > @@ -63,20 +65,6 @@ void component_del(struct device *, const struct > component_ops *); > int component_bind_all(struct device *master, void *master_data); > void component_unbind_all(struct device *master, void *master_data); > > -struct aggregate_device { > - struct device *parent; > - struct device dev; > - struct component_match *match; > - struct aggregate_driver *adrv; > - > - int id; > -}; > - > -static inline struct aggregate_device *to_aggregate_device(struct device *d) > -{ > - return container_of(d, struct aggregate_device, dev); > -} > - > /** > * struct aggregate_driver - Aggregate driver (made up of other drivers) > * @driver: device driver > diff --git a/sound/hda/hdac_component.c b/sound/hda/hdac_component.c > index 9e4dab97f485..4ec5d9bf8533 100644 > --- a/sound/hda/hdac_component.c > +++ b/sound/hda/hdac_component.c > @@ -183,7 +183,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); > > static int hdac_component_master_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_audio_component *acomp = hdac_get_acomp(dev); > int ret; > > @@ -225,7 +225,7 @@ static int hdac_component_master_bind(struct > aggregate_device *adev) > > static void hdac_component_master_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct drm_audio_component *acomp = hdac_get_acomp(dev); > > if (acomp->audio_ops && acomp->audio_ops->master_unbind) > diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c > index f44f5d41bfdb..6edb040d0639 100644 > --- a/sound/soc/codecs/wcd938x.c > +++ b/sound/soc/codecs/wcd938x.c > @@ -4318,7 +4318,7 @@ static struct snd_soc_dai_driver wcd938x_dais[] = { > > static int wcd938x_bind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct wcd938x_priv *wcd938x = dev_get_drvdata(dev); > int ret; > > @@ -4403,7 +4403,7 @@ static int wcd938x_bind(struct aggregate_device *adev) > > static void wcd938x_unbind(struct aggregate_device *adev) > { > - struct device *dev = adev->parent; > + struct device *dev = aggregate_device_parent(adev); > struct wcd938x_priv *wcd938x = dev_get_drvdata(dev); > > device_link_remove(dev, wcd938x->txdev); -- Jani Nikula, Intel Open Source Graphics Center