From patchwork Tue Oct 22 07:27:37 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 3081301 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id E93059F2B7 for ; Tue, 22 Oct 2013 07:43:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D3EF42045E for ; Tue, 22 Oct 2013 07:43:55 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9A06220459 for ; Tue, 22 Oct 2013 07:43:54 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VYWd4-0007wU-Pa; Tue, 22 Oct 2013 07:43:50 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VYWd2-0004aO-An; Tue, 22 Oct 2013 07:43:48 +0000 Received: from co9ehsobe005.messaging.microsoft.com ([207.46.163.28] helo=co9outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VYWcz-0004Zg-04 for linux-arm-kernel@lists.infradead.org; Tue, 22 Oct 2013 07:43:45 +0000 Received: from mail91-co9-R.bigfish.com (10.236.132.230) by CO9EHSOBE018.bigfish.com (10.236.130.81) with Microsoft SMTP Server id 14.1.225.22; Tue, 22 Oct 2013 07:43:23 +0000 Received: from mail91-co9 (localhost [127.0.0.1]) by mail91-co9-R.bigfish.com (Postfix) with ESMTP id 3967D3C00C5; Tue, 22 Oct 2013 07:43:23 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hzz1de098h1de097h8275bhz2dh2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh1fb3h1d0ch1d2eh1d3fh1dc1h1dfeh1dffh1e23h1fe8h1ff5h1155h) Received: from mail91-co9 (localhost.localdomain [127.0.0.1]) by mail91-co9 (MessageSwitch) id 1382427801691972_32321; Tue, 22 Oct 2013 07:43:21 +0000 (UTC) Received: from CO9EHSMHS011.bigfish.com (unknown [10.236.132.230]) by mail91-co9.bigfish.com (Postfix) with ESMTP id A5079B80057; Tue, 22 Oct 2013 07:43:21 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CO9EHSMHS011.bigfish.com (10.236.130.21) with Microsoft SMTP Server (TLS) id 14.16.227.3; Tue, 22 Oct 2013 07:43:21 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-005.039d.mgd.msft.net (10.84.1.17) with Microsoft SMTP Server (TLS) id 14.3.158.2; Tue, 22 Oct 2013 07:43:20 +0000 Received: from shlinux1.ap.freescale.net (shlinux1.ap.freescale.net [10.192.225.216]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id r9M7hHXv019020; Tue, 22 Oct 2013 00:43:18 -0700 From: Peter Chen To: , Subject: [PATCH 1/1] mfd: syscon: return -ENXIO if CONFIG_MFD_SYSCON is not enabled Date: Tue, 22 Oct 2013 15:27:37 +0800 Message-ID: <1382426857-31975-1-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.1 MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131022_034345_184493_32FD175A X-CRM114-Status: UNSURE ( 9.16 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -4.2 (----) Cc: shawn.guo@linaro.org, b29396@freescale.com, peter.chen@freescale.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some platforms may not define CONFIG_MFD_SYSCON (or haven't syscon), it can fix build error for those platforms. Signed-off-by: Peter Chen --- include/linux/mfd/syscon.h | 24 ++++++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-) diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h index b473577..60bf0fb 100644 --- a/include/linux/mfd/syscon.h +++ b/include/linux/mfd/syscon.h @@ -17,10 +17,34 @@ struct device_node; +#if IS_ENABLED(CONFIG_MFD_SYSCON) extern struct regmap *syscon_node_to_regmap(struct device_node *np); extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s); extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s); extern struct regmap *syscon_regmap_lookup_by_phandle( struct device_node *np, const char *property); +#else +static inline struct regmap *syscon_node_to_regmap(struct device_node *np) +{ + return ERR_PTR(-ENXIO); +} + +static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s) +{ + return ERR_PTR(-ENXIO); +} + +static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s) +{ + return ERR_PTR(-ENXIO); +} +static inline struct regmap *syscon_regmap_lookup_by_phandle( + struct device_node *np, + const char *property) +{ + return ERR_PTR(-ENXIO); +} +#endif + #endif /* __LINUX_MFD_SYSCON_H__ */