From: Sepherosa Ziehau <sephe@dragonflybsd.org>
Date: Fri, 22 Jul 2011 02:37:00 +0000 (+0800)
Subject: ioapic: Disable unused GSI instead of leaving it in unknown state
X-Git-Tag: v2.12.0~300
X-Git-Url: https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/289debb868df9aec0bc1ef0b12c879df2aabc1b8

ioapic: Disable unused GSI instead of leaving it in unknown state
---

diff --git a/sys/platform/pc32/apic/ioapic.c b/sys/platform/pc32/apic/ioapic.c
index c3f6316138..a83f670d61 100644
--- a/sys/platform/pc32/apic/ioapic.c
+++ b/sys/platform/pc32/apic/ioapic.c
@@ -374,7 +374,12 @@ ioapic_gsi_setup(int gsi)
 				 * don't do the default configuration.
 				 * The configuration of the target GSI
 				 * will finally setup this IRQ.
+				 *
+				 * This GSI is not used, disable it.
 				 */
+				ioapic_pin_setup(ioapic_gsi_ioaddr(gsi),
+				    ioapic_gsi_pin(gsi), 0,
+				    INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
 				return;
 			}
 			trig = INTR_TRIGGER_EDGE;
diff --git a/sys/platform/pc64/apic/ioapic.c b/sys/platform/pc64/apic/ioapic.c
index ad0dd2c9a7..53adbfaf25 100644
--- a/sys/platform/pc64/apic/ioapic.c
+++ b/sys/platform/pc64/apic/ioapic.c
@@ -371,7 +371,12 @@ ioapic_gsi_setup(int gsi)
 				 * don't do the default configuration.
 				 * The configuration of the target GSI
 				 * will finally setup this IRQ.
+				 *
+				 * This GSI is not used, disable it.
 				 */
+				ioapic_pin_setup(ioapic_gsi_ioaddr(gsi),
+				    ioapic_gsi_pin(gsi), 0,
+				    INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
 				return;
 			}
 			trig = INTR_TRIGGER_EDGE;