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authorGeert Uytterhoeven <geert+renesas@glider.be>2015-01-06 13:39:10 (GMT)
committerSimon Horman <horms+renesas@verge.net.au>2015-01-08 00:15:16 (GMT)
commitb0ddb319db3d7a1943445f0de0a45c07a7f3457a (patch)
treeddb9e6f65fd820f96507a2002d34da34cd5eb465 /arch
parentd034f53cc6c5c09a4e10cb9716986f3844c58514 (diff)
downloadlinux-b0ddb319db3d7a1943445f0de0a45c07a7f3457a.tar.xz
ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances
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>
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 fa7cab8..b5d0cf5 100644
--- a/arch/arm/mach-shmobile/setup-sh73a0.c
+++ b/arch/arm/mach-shmobile/setup-sh73a0.c
@@ -579,6 +579,7 @@ 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[] = {
@@ -640,6 +641,7 @@ 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[] = {
@@ -670,6 +672,7 @@ 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[] = {