From patchwork Mon Feb 8 22:38:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 378791 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25022C433E6 for ; Mon, 8 Feb 2021 22:39:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DE06864E56 for ; Mon, 8 Feb 2021 22:39:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230035AbhBHWjD (ORCPT ); Mon, 8 Feb 2021 17:39:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229927AbhBHWjB (ORCPT ); Mon, 8 Feb 2021 17:39:01 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A87B1C061786; Mon, 8 Feb 2021 14:38:21 -0800 (PST) From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1612823899; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Z3Vm5cN5ZRUgTJMYYFZ2xGq76D9G/sCK8skQRU1NGXs=; b=zdkkD1GHAcXiTl5Xp5WBjkMHpvlCx8N1EMZZ0J5omzWl5zGMWQHcfr2leKqZ2OuFdFoxzo LDNYCWrbNxQVyWVzbJZX40rmBncOwnx+IlIA/uWBNHfku+mwB5EF5GFyP6tSxz3SWjy06I 2vRBMefxXCJrCqlO3/xUg9aW21005IA0v8xkGMYSv1fGS7EUfolXQ0fNcBN1I2aGJLb1jM vmGB6hTk034GoKkwiQwEBfai9G6Zi7jmYQrm+4bobOJYsU629npnlIduQTlvDVb5i06C/4 Ldr8LxS4CiXN7kcPb1E6TGdMyOwP2WiiuW3G9Gg8yKwfWwZuii+KTvk/zv1ayA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1612823899; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Z3Vm5cN5ZRUgTJMYYFZ2xGq76D9G/sCK8skQRU1NGXs=; b=KYB6Smx+kX0Y4v7x1cybAQtIzFv1RIr5biZy0O2ij6xXZJDo1M0tA6FUs+Iwi0KZrgY8UL 8QHHojAdWC4YLZCA== To: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org, Russell King , linux-omap@vger.kernel.org, Thomas Gleixner , Greg Kroah-Hartman , "Ahmed S. Darwish" , Sebastian Andrzej Siewior Subject: [PATCH 2/3] video: omapfb: Remove WARN_ON(in_interrupt()). Date: Mon, 8 Feb 2021 23:38:09 +0100 Message-Id: <20210208223810.388502-3-bigeasy@linutronix.de> In-Reply-To: <20210208223810.388502-1-bigeasy@linutronix.de> References: <20210208223810.388502-1-bigeasy@linutronix.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org From: "Ahmed S. Darwish" dsi_sync_vc() uses in_interrupt() to create a warning if the function is used in non-preemptible context. The usage of in_interrupt() in drivers is phased out and Linus clearly requested that code which changes behaviour depending on context should either be separated or the context be conveyed in an argument passed by the caller, which usually knows the context. The wait_for_completion() function (used in dsi_sync_vc_vp() and dsi_sync_vc_l4() has already a check if it is invoked from proper context. Remove WARN_ON(in_interrupt()) from the driver. Cc: linux-omap@vger.kernel.org Signed-off-by: Ahmed S. Darwish Signed-off-by: Sebastian Andrzej Siewior --- drivers/video/fbdev/omap2/omapfb/dss/dsi.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dsi.c b/drivers/video/fbdev/omap2/omapfb/dss/dsi.c index dc34bb04b865c..df90091de75f8 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/dsi.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/dsi.c @@ -2373,8 +2373,6 @@ static int dsi_sync_vc(struct platform_device *dsidev, int channel) WARN_ON_ONCE(!dsi_bus_is_locked(dsidev)); - WARN_ON(in_interrupt()); - if (!dsi_vc_is_enabled(dsidev, channel)) return 0;