From: Shawn Guo <shawn.guo@linaro.org>
Date: Tue, 4 Dec 2012 14:55:13 +0000 (+0800)
Subject: ARM: imx: mask gpc interrupts initially
X-Git-Tag: next-20130218~18^2~50^2^2~2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=485863b8fa02d515e48ce6b59f01d62172d2fe0d;p=karo-tx-linux.git

ARM: imx: mask gpc interrupts initially

Mask gpc interrupts initially to avoid suspicious interrupts.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---

diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
index e1537f9e45b8..722e5df7e44e 100644
--- a/arch/arm/mach-imx/gpc.c
+++ b/arch/arm/mach-imx/gpc.c
@@ -101,11 +101,16 @@ static void imx_gpc_irq_mask(struct irq_data *d)
 void __init imx_gpc_init(void)
 {
 	struct device_node *np;
+	int i;
 
 	np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-gpc");
 	gpc_base = of_iomap(np, 0);
 	WARN_ON(!gpc_base);
 
+	/* Initially mask all interrupts */
+	for (i = 0; i < IMR_NUM; i++)
+		writel_relaxed(~0, gpc_base + GPC_IMR1 + i * 4);
+
 	/* Register GPC as the secondary interrupt controller behind GIC */
 	gic_arch_extn.irq_mask = imx_gpc_irq_mask;
 	gic_arch_extn.irq_unmask = imx_gpc_irq_unmask;