From 1276ece32c5d18790e8bcff89e692fd3c1790bab Mon Sep 17 00:00:00 2001
From: Eric Auger <eric.auger@linaro.org>
Date: Wed, 14 Oct 2015 15:32:56 +0000
Subject: [PATCH] VFIO: platform: clear IRQ_NOAUTOEN when de-assigning the IRQ
The vfio platform driver currently sets the IRQ_NOAUTOEN before
doing the request_irq to properly handle the user masking. However
it does not clear it when de-assigning the IRQ. This brings issues
when loading the native driver again which may not explicitly enable
the IRQ. This problem was observed with xgbe driver.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---
drivers/vfio/platform/vfio_platform_irq.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c
index 88bba57b30a8..46d4750f43a8 100644
--- a/drivers/vfio/platform/vfio_platform_irq.c
+++ b/drivers/vfio/platform/vfio_platform_irq.c
@@ -185,6 +185,7 @@ static int vfio_set_trigger(struct vfio_platform_device *vdev, int index,
int ret;
if (irq->trigger) {
+ irq_clear_status_flags(irq->hwirq, IRQ_NOAUTOEN);
free_irq(irq->hwirq, irq);
kfree(irq->name);
eventfd_ctx_put(irq->trigger);
--
2.34.1