This is a note to let you know that I've just added the patch titled
ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-shmobile-sh73a0-legacy-set-.control_parent-for-all-irqpin-instances.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From b0ddb319db3d7a1943445f0de0a45c07a7f3457a Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven <[email protected]>
Date: Tue, 6 Jan 2015 14:39:10 +0100
Subject: ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin
instances
From: Geert Uytterhoeven <[email protected]>
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 <[email protected]>.
Signed-off-by: Geert Uytterhoeven <[email protected]>
Fixes: 341eb5465f67437a ("ARM: shmobile: INTC External IRQ pin driver on
sh73a0")
Signed-off-by: Simon Horman <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
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
@@ -598,6 +598,7 @@ 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[] = {
@@ -659,6 +660,7 @@ 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[] = {
@@ -689,6 +691,7 @@ 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[] = {
Patches currently in stable-queue which might be from [email protected]
are
queue-3.18/arm-shmobile-sh73a0-legacy-set-.control_parent-for-all-irqpin-instances.patch
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