From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 31 Jan 2022 08:55:40 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nERXI-001TE3-Kx for lore@lore.pengutronix.de; Mon, 31 Jan 2022 08:55:40 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nERXG-0004zl-DC for lore@pengutronix.de; Mon, 31 Jan 2022 08:55:39 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=PDe3QRQujAwDjSynxC0bHF1oD4uP7SI6Bw3oFJ192GU=; b=CErhUnCA+TugOy arGfiMiw8LvLbZup5GdDdRZ55tLPU213aL4Q8EQrM6HNfsr9WTC2x4o4ycnxZcg8MdTvsBYO8/lri YtmDshf6P/6GNTWrI/88zxyge3U8+LzyjICZYVvidHzz4ezqqeTVtwa4CeHgKG6nb8tmmTaHMd143 B1YVOjgBJIPG913SJO2irF8+Zr/9+gkvwyFvjn/KPnyIEr4WXrmQ4mmCihxPfyn0XQ7FgrtbHxw/U rHcZ3U6ImjgF78/zu0rbtN4JCGYiVKD4vQE96NdR/qfzMAZ62qLhGOAjOZNLAzb0p+YTNAU1WPM07 KYow7ALafOKmFnLFIl8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nERVo-008KuO-Ij; Mon, 31 Jan 2022 07:54:08 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nERVZ-008Ks1-Is for barebox@lists.infradead.org; Mon, 31 Jan 2022 07:53:54 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nERVY-0004g7-BW; Mon, 31 Jan 2022 08:53:52 +0100 Received: from afa by dude.hi.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1nERVX-007qMb-TE; Mon, 31 Jan 2022 08:53:51 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 31 Jan 2022 08:53:50 +0100 Message-Id: <20220131075350.1869535-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220130_235353_663135_9983B16B X-CRM114-Status: UNSURE ( 8.62 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH] include: : implement WARN_ON_ONCE X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) We have WARN_ON and WARN_ONCE. Add WARN_ON_ONCE as well to accommodate Linux driver code using it. Signed-off-by: Ahmad Fatoum --- include/asm-generic/bug.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index f20e1b4d65ac..5d0a458eae74 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -50,4 +50,16 @@ } \ unlikely(__ret_warn_once); \ }) + +#define WARN_ON_ONCE(condition) ({ \ + static int __warned; \ + int __ret_warn_once = !!(condition); \ + \ + if (unlikely(__ret_warn_once && !__warned)) { \ + __warned = 1; \ + __WARN(); \ + } \ + unlikely(__ret_warn_once); \ +}) + #endif -- 2.30.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox