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MPSAFE locking

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* Serialize calls to acpi_pcib_route_interrupt().
* Note that acpi_pcib_attach() should not be called concurrently.
This commit is contained in:
Nate Lawson 2004-08-13 06:22:07 +00:00
parent 86b697a70b
commit bbf7c27a9c
1 changed files with 9 additions and 0 deletions
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9
sys/dev/acpica/acpi_pcib.c
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@ -45,6 +45,12 @@ __FBSDID("$FreeBSD$");
#define _COMPONENT ACPI_BUS
ACPI_MODULE_NAME("PCI")
ACPI_SERIAL_DECL(pcib, "ACPI PCI bus methods");
/*
* For locking, we assume the caller is not concurrent since this is
* triggered by newbus methods.
*/
int
acpi_pcib_attach(device_t dev, ACPI_BUFFER *prt, int busno)
{
@ -114,6 +120,8 @@ acpi_pcib_route_interrupt(device_t pcib, device_t dev, int pin)
/* ACPI numbers pins 0-3, not 1-4 like the BIOS. */
pin--;
ACPI_SERIAL_BEGIN(pcib);
/* Look up the PRT entry for this device. */
entry = acpi_pci_find_prt(pcib, dev, pin);
if (entry == NULL) {
@ -190,6 +198,7 @@ acpi_pcib_route_interrupt(device_t pcib, device_t dev, int pin)
acpi_name(entry->prt_source));
out:
ACPI_SERIAL_END(pcib);
return_VALUE (interrupt);
}