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authorGeert Uytterhoeven <geert+renesas@glider.be>2015-01-06 14:39:10 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-01-27 07:52:33 -0800
commit77287a2cabfcd06af888ae22623b5c92ffcafdfb (patch)
tree37be27f563f2c43a137eb1d7bf66f47a7005ce99 /arch
parent974b23880256ddd7a0baa03ffd7f7729535589c0 (diff)
downloadlinux-linaro-stable-77287a2cabfcd06af888ae22623b5c92ffcafdfb.tar.gz
ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances
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 <laurent.pinchart+renesas@ideasonboard.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Fixes: 341eb5465f67437a ("ARM: shmobile: INTC External IRQ pin driver on sh73a0") Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-shmobile/setup-sh73a0.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c
index 9696f3646864..ea788c8e32e8 100644
--- 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_device = {
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_device = {
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_device = {
static struct renesas_intc_irqpin_config irqpin3_platform_data = {
.irq_base = irq_pin(24), /* IRQ24 -> IRQ31 */
+ .control_parent = true,
};
static struct resource irqpin3_resources[] = {