[SRU][F/H][PATCH 1/1] Revert "ACPI: resources: Add checks for ACPI IRQ override"

Kelsey Skunberg kelsey.skunberg at canonical.com
Wed Aug 25 22:15:21 UTC 2021


From: Hui Wang <hui.wang at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/1941657

The commit 0ec4e55e9f57 ("ACPI: resources: Add checks for ACPI IRQ
override") introduces regression on some platforms, at least it makes
the UART can't get correct irq setting on two different platforms,
and it makes the kernel can't bootup on these two platforms.

This reverts commit 0ec4e55e9f571f08970ed115ec0addc691eda613.

Regression-discuss: https://bugzilla.kernel.org/show_bug.cgi?id=213031
Reported-by: PGNd <pgnet.dev at gmail.com>
Cc: 5.4+ <stable at vger.kernel.org> # 5.4+
Signed-off-by: Hui Wang <hui.wang at canonical.com>
Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
(cherry picked from commit e0eef3690dc66b3ecc6e0f1267f332403eb22bea)
Signed-off-by: Kelsey Skunberg <kelsey.skunberg at canonical.com>
---
 drivers/acpi/resource.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index f0b2c3791253..20a7892c6d3f 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -423,13 +423,6 @@ static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
 	}
 }
 
-static bool irq_is_legacy(struct acpi_resource_irq *irq)
-{
-	return irq->triggering == ACPI_EDGE_SENSITIVE &&
-		irq->polarity == ACPI_ACTIVE_HIGH &&
-		irq->shareable == ACPI_EXCLUSIVE;
-}
-
 /**
  * acpi_dev_resource_interrupt - Extract ACPI interrupt resource information.
  * @ares: Input ACPI resource object.
@@ -468,7 +461,7 @@ bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
 		}
 		acpi_dev_get_irqresource(res, irq->interrupts[index],
 					 irq->triggering, irq->polarity,
-					 irq->shareable, irq_is_legacy(irq));
+					 irq->shareable, true);
 		break;
 	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 		ext_irq = &ares->data.extended_irq;
-- 
2.25.1




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