From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sricharan R 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> References: <1399299527-10955-1-git-send-email-r.sricharan@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from bear.ext.ti.com ([192.94.94.41]:39947 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932752AbaEEOU3 (ORCPT ); Mon, 5 May 2014 10:20:29 -0400 In-Reply-To: <1399299527-10955-1-git-send-email-r.sricharan@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: nm@ti.com, rnayak@ti.com, santosh.shilimkar@ti.com, tony@atomide.com 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; -- 1.7.9.5