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Commit 36ad7d2b authored by Sinan Kaya's avatar Sinan Kaya Committed by Rafael J. Wysocki
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ACPI: Move PCI reset to a separate function 



Getting ready to factor out PCI specific code when CONFIG_PCI is unset.
Create a acpi_pci_reset() that kick starts PCI specific reset.

Signed-off-by: default avatarSinan Kaya <okaya@kernel.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 7566ec39

drivers/acpi/reboot.c

+19 −13
Original line number Diff line number Diff line
@@ -4,11 +4,27 @@ 
#include <linux/acpi.h>

#include <acpi/reboot.h>



static void acpi_pci_reboot(struct acpi_generic_address *rr, u8 reset_value)

{

	unsigned int devfn;

	struct pci_bus *bus0;



	/* The reset register can only live on bus 0. */

	bus0 = pci_find_bus(0, 0);

	if (!bus0)

		return;

	/* Form PCI device/function pair. */

	devfn = PCI_DEVFN((rr->address >> 32) & 0xffff,

			  (rr->address >> 16) & 0xffff);

	pr_debug("Resetting with ACPI PCI RESET_REG.\n");

	/* Write the value that resets us. */

	pci_bus_write_config_byte(bus0, devfn,

			(rr->address & 0xffff), reset_value);

}



void acpi_reboot(void)

{

	struct acpi_generic_address *rr;

	struct pci_bus *bus0;

	unsigned int devfn;

	u8 reset_value;



	if (acpi_disabled)
@@ -33,17 +49,7 @@ void acpi_reboot(void) 
	 * on a device on bus 0. */

	switch (rr->space_id) {

	case ACPI_ADR_SPACE_PCI_CONFIG:

		/* The reset register can only live on bus 0. */

		bus0 = pci_find_bus(0, 0);

		if (!bus0)

			return;

		/* Form PCI device/function pair. */

		devfn = PCI_DEVFN((rr->address >> 32) & 0xffff,

				  (rr->address >> 16) & 0xffff);

		printk(KERN_DEBUG "Resetting with ACPI PCI RESET_REG.\n");

		/* Write the value that resets us. */

		pci_bus_write_config_byte(bus0, devfn,

				(rr->address & 0xffff), reset_value);

		acpi_pci_reboot(rr, reset_value);

		break;



	case ACPI_ADR_SPACE_SYSTEM_MEMORY: