[PATCH 05/10] ARM: imx: mask gpc interrupts initially
From: Shawn Guo <hidden>
Date: 2012-10-23 15:22:54
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Mask gpc interrupts initially to avoid suspicious interrupts. Signed-off-by: Shawn Guo <redacted> --- 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 c75842d..be9a6cb 100644
--- a/arch/arm/mach-imx/gpc.c
+++ b/arch/arm/mach-imx/gpc.c@@ -102,6 +102,7 @@ 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);
@@ -110,6 +111,10 @@ void __init imx_gpc_init(void) /* Initialize cpu power up counters to minimize the latency */ writel_relaxed(0x101, gpc_base + GPC_PGC_CPU_PUPSCR); + /* 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