mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-12 05:48:40 +00:00
Code Issues Releases Wiki Activity

irqchip: armada-370-xp: Fix MSI interrupt handling

Browse source 
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@semihalf.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Fixes: bc69b8adfe ("irqchip: armada-370-xp: Setup a chained handler for the MPIC")
Cc: <stable@vger.kernel.org> # v3.15+
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Link: https://lkml.kernel.org/r/1411643839-64925-2-git-send-email-jaz@semihalf.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Grzegorz Jaszczyk 2014-09-25 13:17:18 +02:00 committed by Jason Cooper
parent f114040e3e
commit 298dcb2dd0
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/irqchip/irq-armada-370-xp.c
View file

@ -413,9 +413,9 @@ 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) {