From patchwork Fri Mar 18 21:53:58 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Carl Vanderlip X-Patchwork-Id: 645101 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p2ILs4vt027796 for ; Fri, 18 Mar 2011 21:54:04 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932722Ab1CRVyD (ORCPT ); Fri, 18 Mar 2011 17:54:03 -0400 Received: from wolverine01.qualcomm.com ([199.106.114.254]:56623 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932691Ab1CRVyB (ORCPT ); Fri, 18 Mar 2011 17:54:01 -0400 X-IronPort-AV: E=McAfee;i="5400,1158,6289"; a="80848366" Received: from ironmsg04-r.qualcomm.com ([172.30.46.18]) by wolverine01.qualcomm.com with ESMTP; 18 Mar 2011 14:54:01 -0700 X-IronPort-AV: E=Sophos;i="4.63,205,1299484800"; d="scan'208";a="37044643" Received: from carlv-linux.qualcomm.com ([10.52.52.151]) by Ironmsg04-R.qualcomm.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 18 Mar 2011 14:54:01 -0700 Received: from carlv-linux.qualcomm.com (localhost [127.0.0.1]) by carlv-linux.qualcomm.com (8.14.2/8.14.2/1.0) with ESMTP id p2ILs1GJ027040; Fri, 18 Mar 2011 14:54:01 -0700 Received: (from carlv@localhost) by carlv-linux.qualcomm.com (8.14.2/8.12.1/Submit) id p2ILs1HH027039; Fri, 18 Mar 2011 14:54:01 -0700 From: Carl Vanderlip To: David Brown , Daniel Walker , Bryan Huntsman Cc: Brian Swetland , Dima Zavin , Rebecca Schultz Zavin , Colin Cross , linux-fbdev@vger.kernel.org, Carl Vanderlip , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 03/20] video: msm: add locked_enable_mdp_irq function Date: Fri, 18 Mar 2011 14:53:58 -0700 Message-Id: <1300485238-27004-1-git-send-email-carlv@codeaurora.org> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1300484846-26393-1-git-send-email-carlv@codeaurora.org> References: <1300484846-26393-1-git-send-email-carlv@codeaurora.org> Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Fri, 18 Mar 2011 21:54:04 +0000 (UTC) diff --git a/drivers/video/msm/mdp.c b/drivers/video/msm/mdp.c index a078028..9fb9f1a 100644 --- a/drivers/video/msm/mdp.c +++ b/drivers/video/msm/mdp.c @@ -47,14 +47,12 @@ static struct clk *clk; static unsigned int mdp_irq_mask; DEFINE_MUTEX(mdp_mutex); -static int enable_mdp_irq(struct mdp_info *mdp, uint32_t mask) +static int locked_enable_mdp_irq(struct mdp_info *mdp, uint32_t mask) { - unsigned long irq_flags; int ret = 0; BUG_ON(!mask); - spin_lock_irqsave(&mdp->lock, irq_flags); /* if the mask bits are already set return an error, this interrupt * is already enabled */ if (mdp_irq_mask & mask) { @@ -72,7 +70,17 @@ static int enable_mdp_irq(struct mdp_info *mdp, uint32_t mask) /* update the irq mask to reflect the fact that the interrupt is * enabled */ mdp_irq_mask |= mask; - spin_unlock_irqrestore(&mdp->lock, irq_flags); + return 0; +} + +static int enable_mdp_irq(struct mdp_info *mdp, uint32_t mask) +{ + unsigned long flags; + int ret; + + spin_lock_irqsave(&mdp->lock, flags); + ret = locked_enable_mdp_irq(mdp, mask); + spin_unlock_irqrestore(&mdp->lock, flags); return ret; }