From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE334470135 for ; Wed, 12 Aug 2026 16:30:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786552209; cv=none; b=M4aCjgtPoIqfLSJvVarIj00cCdmFjP9GlEampNT/D/CCaaDkZWOINaBQsX/RM7NOyIRYlwn/K13DzAwaLd8k93qIbIEecyPHrY9y/BfUdgEH/VQqd5TC5/KD7rDoP+0mAMp34xS8czTvcZvBNvRkpwjOsXkF9RlKV3cMw9xt/sw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786552209; c=relaxed/simple; bh=1nxBbdYt4NyVpUfMMbPHXMdAVynnyeyFD7RDA7bfvEA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=aQpYSyB5FUc68GyLZm+Uas/syJhDGFEWq1E3KJ9+ZjPgK/yCO8AVG3blInwSIH1qWQuGZWTeGV29O4l2mJzsV4mPdqiabEoVIqS8nKSQpmSEp/faJ/s7s/xwK/8DcCDMXgXYQBcjYnNxUQeA1WM/UptmbJb4JMl7UQCY1IeeiTo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre.com header.i=@baylibre.com header.b=FTi3TjSU; arc=none smtp.client-ip=209.85.128.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre.com header.i=@baylibre.com header.b="FTi3TjSU" Received: by mail-wm1-f53.google.com with SMTP id 5b1f17b1804b1-490cf322ed0so11514255e9.1 for ; Wed, 12 Aug 2026 09:30:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre.com; s=google; t=1786552202; x=1787157002; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=SmkTZ3IeMxC+OXIAB9iDoircMZw2Dwc6lMPotGUqEQg=; b=FTi3TjSUHzc/HRjywiEBiHCFvI+9lPZ4Y95+kXqA+LXmvwLYPKRRbDrhj8lEi5t+fm rG5Js2MukdneqsDPy/XsZVlFfnbzaDps5ATNiBq8n+suWV4CTqs0XWOnCjzxjlHTM86T WQTrct7l7fUkU4vub77zSd6gLndrYkJvMW88O1ZdptrTzMOuOEoY2OREbDvc0aALJMMM caiNmbXumWZnqnyMm6vYESGE/Ln9kqzvt/fVXOzdmGU5WNf7E81rsi5dCDjdfLva8emg QljOx4vZb2l8eRVPqAmL6OgvwQgRiZaOqR7UR3B+y9SNLrKslOgMmBjBdjKuNMpmTMtk RT0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786552202; x=1787157002; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=SmkTZ3IeMxC+OXIAB9iDoircMZw2Dwc6lMPotGUqEQg=; b=dNkN0giXiw2A5i3TSgVvpFfDFI7PXXrvvNJc0M0ghVzx1dJPLHh4QHB+BAuYlw/rNi kiznUaxb7ZHDWrS5UX00CSIbD6EnL3jFAdkDE0psmtkymiQ604hPi5TcvEoP92eAk8Ka 0kDKZqxqipYNJ9a1y4xbXwPVwMpnJIgHK26zCDK1x5ZtgHNNZt0YxO1Vj7C9uFBBW4hJ NUawmoOxTL0I6lLjVRVw+wi0bK/p4n87lTX5cYo04FwqgxpETrCaEmHneXxvDb45NVWU OMIS9YvKSZD01sLdneWGcbV3Z1m6PoYouDPwvvfuOEc19FLvPRczGH7WqRi/UcCG/Nyx +nNQ== X-Gm-Message-State: AOJu0YwIlKrbUTynf3+u3WoCO3SYWPqS1ViW3L2N2CwkKlPmdiwS8T83 D4fjbbzXrXFoPkjmkhewJ9qwBBFQU9o9qEiP1XY3dJHOv6Md8XX7vg2aXK8/sbnJHNs= X-Gm-Gg: AR+sD11TdSqeoYMdUt2Zl+psiPygXaVYxsmjRI3+SAavT+GkQ9CnrTuo2R7pLxLxH6Q zipS4GMFLoqX+BOQRADJSq8AJUiySRX4y322VtMhfpsuaYsb4sFf1i7GZIjdoteiy0A9Ru+Vrcm sCk5joTs+gopGYqUxXvCdxwLW525pBhLuIyvQqK5XYEKZ0htlZccIELHlRZNFPt21Yu0Tu8D3p6 YIusEWtHtUyqGaJpMmaBJcpMaYomRCBfZzNXbFNbRphC43lzQ9PO4vN1UcsYt+ekfsA5If7c9fD bAWxf8BoQuZ2D3Iq3Nn0zUzBykl4ujs8VRT+JKSUv7JfZbQx0fQ8G867nvMGc57Pkq83iUS/Phm /WVUM+KSPweJxnOuc93CTYiqgwZ9B94sbfX/MftyThg6SUSCLKQ+Q+d5V64oe2ZcMTFvACsB+EO vlra3h1hJOZSKvZIeKN81Krs0tbxwAdQThuS4OSrG/0NbqR/JJtryVbFBnHfczPaAYfY+NqbrPs kv5+b4Gnk3qxejb0h500B9fHF49aG9OWeazqKmw5OiYfFwR5mg= X-Received: by 2002:a05:600c:b85:b0:498:2b1f:e0c6 with SMTP id 5b1f17b1804b1-4997c12caffmr92430045e9.18.1786552202335; Wed, 12 Aug 2026 09:30:02 -0700 (PDT) Received: from localhost (p200300f65f017104d14d09407ec2ee4e.dip0.t-ipconnect.de. [2003:f6:5f01:7104:d14d:940:7ec2:ee4e]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-49981aba3e3sm4063945e9.0.2026.08.12.09.30.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2026 09:30:01 -0700 (PDT) Date: Wed, 12 Aug 2026 18:30:00 +0200 From: Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= To: "M, Krishnamoorthi" Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, broonie@kernel.org, linux-spi@vger.kernel.org, akshata.mukundshetty@amd.com, bleung@chromium.org, groeck@chromium.org, chrome-platform@lists.linux.dev, corbet@lwn.net, linux-doc@vger.kernel.org, skhan@linuxfoundation.org, andrew@codeconstruct.com.au, linux-aspeed@lists.ozlabs.org, openbmc@lists.ozlabs.org Subject: Re: [RFC PATCH 1/4] espi: add core bus framework Message-ID: References: <20260804115259.4065638-1-krishnamoorthi.m@amd.com> <20260804115259.4065638-2-krishnamoorthi.m@amd.com> <0f7469b8-8275-4061-b336-97cbce41ff82@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="2paxlrpjxbcfpa7x" Content-Disposition: inline In-Reply-To: <0f7469b8-8275-4061-b336-97cbce41ff82@amd.com> --2paxlrpjxbcfpa7x Content-Type: text/plain; protected-headers=v1; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [RFC PATCH 1/4] espi: add core bus framework MIME-Version: 1.0 Hello, On Wed, Aug 12, 2026 at 06:20:29PM +0530, M, Krishnamoorthi wrote: > On 8/6/2026 7:01 PM, Uwe Kleine-K=F6nig wrote: > > On Tue, Aug 04, 2026 at 05:22:56PM +0530, Krishnamoorthi M wrote: > > > [...] > > > +const struct bus_type espi_bus_type =3D { > > > + .name =3D "espi", > > > + .match =3D espi_bus_match, > > > + .uevent =3D espi_bus_uevent, > > > + .probe =3D espi_bus_probe, > > > + .remove =3D espi_bus_remove, > > > +}; > > > +EXPORT_SYMBOL_GPL(espi_bus_type); > >=20 > > Do you really need this exported? >=20 > Yes, it is required. Controller and slave drivers built as modules refere= nce > espi_bus_type directly when registering devices. Without the export they > fail to link. I would have expected that drv->driver.bus =3D &espi_bus_type; in __espi_register_driver() is enough for drivers to not have to use that symbol directly? Best regards Uwe --2paxlrpjxbcfpa7x Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEP4GsaTp6HlmJrf7Tj4D7WH0S/k4FAmp8n4YACgkQj4D7WH0S /k4Ymwf+OtbJNAPe3Ou/27KwbxJa7KENRUomWmPpgocqBVTa4ITzi7yNWHl4gAqS n5Xc9dI8tHJ49x6eepGWEp56WN4iknHSvv4VfsYY1q3IiP0BA7wHPGNtXoWIHOAa 4o7paa8rCqvUEEnsWHx6t7NgF4d9H3ByZLukSoHjbEaMGXR8k4sAoIZl6OP1zHLL sDcIp43PhG5JIYLJA+zNDa/GcsWt7GAOI61w0iEk642G+3Sp4LU4Aeml8sLnCZwv z5mEpWndwlZQ5q6u+eQBlADmahJtNTb4U9cwNydL7sdyQFKIWhpQEIlpaBbpzcKH rwtLLuNJ9v2D8mdQKMK2Yod5Qp7vCg== =HyN7 -----END PGP SIGNATURE----- --2paxlrpjxbcfpa7x--