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Subject[GIT pull] irq updates for 3.18
Linus,

please pull the latest irq-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq-urgent-for-linus

Two fixlets for the armada SoC interrupt controller.

Thanks,

tglx

------------------>
Grzegorz Jaszczyk (2):
irqchip: armada-370-xp: Fix MSI interrupt handling
irqchip: armada-370-xp: Fix MPIC interrupt handling


drivers/irqchip/irq-armada-370-xp.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 3e238cd049e6..6a2e168c3ab0 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -43,6 +43,7 @@
#define ARMADA_370_XP_INT_CLEAR_ENABLE_OFFS (0x34)
#define ARMADA_370_XP_INT_SOURCE_CTL(irq) (0x100 + irq*4)
#define ARMADA_370_XP_INT_SOURCE_CPU_MASK 0xF
+#define ARMADA_370_XP_INT_IRQ_FIQ_MASK(cpuid) ((BIT(0) | BIT(8)) << cpuid)

#define ARMADA_370_XP_CPU_INTACK_OFFS (0x44)
#define ARMADA_375_PPI_CAUSE (0x10)
@@ -406,19 +407,29 @@ static void armada_370_xp_mpic_handle_cascade_irq(unsigned int irq,
struct irq_desc *desc)
{
struct irq_chip *chip = irq_get_chip(irq);
- unsigned long irqmap, irqn;
+ unsigned long irqmap, irqn, irqsrc, cpuid;
unsigned int cascade_irq;

chained_irq_enter(chip, desc);

irqmap = readl_relaxed(per_cpu_int_base + ARMADA_375_PPI_CAUSE);
-
- if (irqmap & BIT(0)) {
- armada_370_xp_handle_msi_irq(NULL, true);
- irqmap &= ~BIT(0);
- }
+ cpuid = cpu_logical_map(smp_processor_id());

for_each_set_bit(irqn, &irqmap, BITS_PER_LONG) {
+ irqsrc = readl_relaxed(main_int_base +
+ ARMADA_370_XP_INT_SOURCE_CTL(irqn));
+
+ /* Check if the interrupt is not masked on current CPU.
+ * Test IRQ (0-1) and FIQ (8-9) mask bits.
+ */
+ if (!(irqsrc & ARMADA_370_XP_INT_IRQ_FIQ_MASK(cpuid)))
+ continue;
+
+ if (irqn == 1) {
+ armada_370_xp_handle_msi_irq(NULL, true);
+ continue;
+ }
+
cascade_irq = irq_find_mapping(armada_370_xp_mpic_domain, irqn);
generic_handle_irq(cascade_irq);
}

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