[PATCH v2 2/4] ARM: imx: mask gpc interrupts initially
Shawn Guo
shawn.guo at linaro.org
Tue Dec 4 09:55:13 EST 2012
Mask gpc interrupts initially to avoid suspicious interrupts.
Signed-off-by: Shawn Guo <shawn.guo at linaro.org>
---
arch/arm/mach-imx/gpc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
index e1537f9..722e5df 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;
--
1.7.9.5
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