[PATCH 3.16.y-ckt 010/254] irqchip: armada-370-xp: Fix MSI interrupt handling
Luis Henriques
luis.henriques at canonical.com
Tue Nov 25 10:36:00 UTC 2014
3.16.7-ckt2 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Grzegorz Jaszczyk <jaz at semihalf.com>
commit 298dcb2dd0267d51e4f7c94a628cd0765a50ad75 upstream.
The MSI interrupts use the 16 high doorbells, which are notified by using IRQ1
of the main interrupt controller.
The MSI interrupts were handled correctly for Armada-XP and Armada-370 but not
for Armada-375 and Armada-38x, which use chained handler for the MPIC.
This commit fixes that by checking proper interrupt number in chained handler
for the MPIC.
Signed-off-by: Grzegorz Jaszczyk <jaz at semihalf.com>
Reviewed-by: Gregory CLEMENT <gregory.clement at free-electrons.com>
Fixes: bc69b8adfe22 ("irqchip: armada-370-xp: Setup a chained handler for the MPIC")
Acked-by: Ezequiel Garcia <ezequiel.garcia at free-electrons.com>
Link: https://lkml.kernel.org/r/1411643839-64925-2-git-send-email-jaz@semihalf.com
Signed-off-by: Jason Cooper <jason at lakedaemon.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
drivers/irqchip/irq-armada-370-xp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 574aba0eba4e..91424c481782 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -417,9 +417,9 @@ static void armada_370_xp_mpic_handle_cascade_irq(unsigned int irq,
irqmap = readl_relaxed(per_cpu_int_base + ARMADA_375_PPI_CAUSE);
- if (irqmap & BIT(0)) {
+ if (irqmap & BIT(1)) {
armada_370_xp_handle_msi_irq(NULL, true);
- irqmap &= ~BIT(0);
+ irqmap &= ~BIT(1);
}
for_each_set_bit(irqn, &irqmap, BITS_PER_LONG) {
--
2.1.0
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