From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Geert Uytterhoeven , Simon Horman Subject: [PATCH 3.10 41/50] ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances Date: Sun, 25 Jan 2015 10:07:31 -0800 Message-Id: <20150125180704.946070019@linuxfoundation.org> In-Reply-To: <20150125180702.521559311@linuxfoundation.org> References: <20150125180702.521559311@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Geert Uytterhoeven commit b0ddb319db3d7a1943445f0de0a45c07a7f3457a upstream. The sh73a0 INTC can't mask interrupts properly most likely due to a hardware bug. Set the .control_parent flag to delegate masking to the parent interrupt controller, like was already done for irqpin1. Without this, accessing the three-axis digital accelerometer ADXL345 on kzm9g through /dev/input/event1 causes an interrupt storm, which requires a power-cycle to recover from. This was inspired by a patch for arch/arm/boot/dts/sh73a0.dtsi from Laurent Pinchart . Signed-off-by: Geert Uytterhoeven Fixes: 341eb5465f67437a ("ARM: shmobile: INTC External IRQ pin driver on sh73a0") Signed-off-by: Simon Horman Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-shmobile/setup-sh73a0.c | 3 +++ 1 file changed, 3 insertions(+) --- a/arch/arm/mach-shmobile/setup-sh73a0.c +++ b/arch/arm/mach-shmobile/setup-sh73a0.c @@ -814,6 +814,7 @@ static struct platform_device ipmmu_devi static struct renesas_intc_irqpin_config irqpin0_platform_data = { .irq_base = irq_pin(0), /* IRQ0 -> IRQ7 */ + .control_parent = true, }; static struct resource irqpin0_resources[] = { @@ -875,6 +876,7 @@ static struct platform_device irqpin1_de static struct renesas_intc_irqpin_config irqpin2_platform_data = { .irq_base = irq_pin(16), /* IRQ16 -> IRQ23 */ + .control_parent = true, }; static struct resource irqpin2_resources[] = { @@ -905,6 +907,7 @@ static struct platform_device irqpin2_de static struct renesas_intc_irqpin_config irqpin3_platform_data = { .irq_base = irq_pin(24), /* IRQ24 -> IRQ31 */ + .control_parent = true, }; static struct resource irqpin3_resources[] = {