Author: mav
Date: Tue Jun 22 16:10:48 2010
New Revision: 209431
URL: http://svn.freebsd.org/changeset/base/209431
Log:
Do not set level-triggered interrupt mode if we are not going to use it.
This fixes QEMU crash due to unsupported level-triggered HPET interrupts.
Reported by: kib@
Modified:
head/sys/dev/acpica/acpi_hpet.c
Modified: head/sys/dev/acpica/acpi_hpet.c
==============================================================================
--- head/sys/dev/acpica/acpi_hpet.c Tue Jun 22 15:01:23 2010
(r209430)
+++ head/sys/dev/acpica/acpi_hpet.c Tue Jun 22 16:10:48 2010
(r209431)
@@ -526,6 +526,7 @@ hpet_attach(device_t dev)
t->irq = -2;
} else
#endif
+ if (sc->irq >= 0 && (t->vectors & (1 << sc->irq)))
t->caps |= (sc->irq << 9) | HPET_TCNF_INT_TYPE;
bus_write_4(sc->mem_res, HPET_TIMER_CAP_CNF(i), t->caps);
/* Skip event timers without set up IRQ. */
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