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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2015-01-06 14:39:10 +0100 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2015-01-08 09:15:16 +0900 |
| commit | b0ddb319db3d7a1943445f0de0a45c07a7f3457a (patch) | |
| tree | ddb9e6f65fd820f96507a2002d34da34cd5eb465 | |
| parent | d034f53cc6c5c09a4e10cb9716986f3844c58514 (diff) | |
| download | linux-b0ddb319db3d7a1943445f0de0a45c07a7f3457a.tar.bz2 | |
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>
| -rw-r--r-- | arch/arm/mach-shmobile/setup-sh73a0.c | 3 |
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 fa7cab820ab9..b5d0cf579c61 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[] = { |