From patchwork Tue Oct 23 15:22:54 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [05/10] ARM: imx: mask gpc interrupts initially Date: Tue, 23 Oct 2012 05:22:54 -0000 From: Shawn Guo X-Patchwork-Id: 193510 Message-Id: <1351005779-30347-6-git-send-email-shawn.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org Cc: Sascha Hauer , Shawn Guo , Robert Lee Mask gpc interrupts initially to avoid suspicious interrupts. Signed-off-by: Shawn Guo --- 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;