From patchwork Mon May 5 14:18:43 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: R Sricharan X-Patchwork-Id: 4115381 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 91189BFF02 for ; Mon, 5 May 2014 14:23:08 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C6F8C20384 for ; Mon, 5 May 2014 14:23:07 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EEDCE20251 for ; Mon, 5 May 2014 14:23:06 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WhJl2-0003CE-90; Mon, 05 May 2014 14:20:40 +0000 Received: from bear.ext.ti.com ([192.94.94.41]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WhJkq-0002s1-7N for linux-arm-kernel@lists.infradead.org; Mon, 05 May 2014 14:20:28 +0000 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id s45EK4Dq002213; Mon, 5 May 2014 09:20:04 -0500 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id s45EK4tW020496; Mon, 5 May 2014 09:20:04 -0500 Received: from dflp32.itg.ti.com (10.64.6.15) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.174.1; Mon, 5 May 2014 09:20:03 -0500 Received: from uda0393807.india.ti.com. (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id s45EJxgT023302; Mon, 5 May 2014 09:20:02 -0500 From: Sricharan R To: , Subject: [PATCH 1/5] irqchip: crossbar: dont use '0' to mark reserved interrupts Date: Mon, 5 May 2014 19:48:43 +0530 Message-ID: <1399299527-10955-2-git-send-email-r.sricharan@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1399299527-10955-1-git-send-email-r.sricharan@ti.com> References: <1399299527-10955-1-git-send-email-r.sricharan@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140505_072028_395159_F5FE7681 X-CRM114-Status: GOOD ( 12.70 ) X-Spam-Score: -5.7 (-----) Cc: nm@ti.com, tony@atomide.com, rnayak@ti.com, santosh.shilimkar@ti.com 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=-2.5 required=5.0 tests=BAYES_00,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 From: Nishanth Menon Today '0' is actually reserved, but may not be the same in the future. So, use a flag to mark the GIC interrupts that are reserved. Signed-off-by: Nishanth Menon Signed-off-by: Sricharan R --- drivers/irqchip/irq-crossbar.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c index 3d15d16..20105bc 100644 --- a/drivers/irqchip/irq-crossbar.c +++ b/drivers/irqchip/irq-crossbar.c @@ -17,6 +17,7 @@ #include #define IRQ_FREE -1 +#define IRQ_RESERVED -2 #define GIC_IRQ_START 32 /* @@ -139,7 +140,7 @@ static int __init crossbar_of_init(struct device_node *node) pr_err("Invalid reserved entry\n"); goto err3; } - cb->irq_map[entry] = 0; + cb->irq_map[entry] = IRQ_RESERVED; } } @@ -170,7 +171,7 @@ static int __init crossbar_of_init(struct device_node *node) * reserved irqs. so find and store the offsets once. */ for (i = 0; i < max; i++) { - if (!cb->irq_map[i]) + if (cb->irq_map[i] == IRQ_RESERVED) continue; cb->register_offsets[i] = reserved;