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ACPI / bind: Redefine acpi_preset_companion()

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Modify acpi_preset_companion() to take a struct acpi_device pointer
instead of an ACPI handle as its second argument and redefine it as
a static inline wrapper around ACPI_COMPANION_SET() passing the
return value of acpi_find_child_device() directly as the second
argument to it.  Update its users to pass struct acpi_device
pointers instead of ACPI handles to it.

This allows some unnecessary acpi_bus_get_device() calls to be
avoided.

Signed-off-by: Rafael J. Wysocki <[email protected]>
Reviewed-by: Aaron Lu <[email protected]>
Tested-by: Aaron Lu <[email protected]> # for ATA binding
This commit is contained in:
Rafael J. Wysocki 2013-11-28 23:58:28 +01:00
commit 9c5ad36d98
5 changed files with 21 additions and 24 deletions
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26
drivers/ata/libata-acpi.c
View file

@ -178,12 +178,12 @@ static const struct acpi_dock_ops ata_acpi_ap_dock_ops = {
/* bind acpi handle to pata port */
void ata_acpi_bind_port(struct ata_port *ap)
{
acpi_handle host_handle = ACPI_HANDLE(ap->host->dev);
struct acpi_device *host_companion = ACPI_COMPANION(ap->host->dev);
if (libata_noacpi || ap->flags & ATA_FLAG_ACPI_SATA || !host_handle)
if (libata_noacpi || ap->flags & ATA_FLAG_ACPI_SATA || !host_companion)
return;
acpi_preset_companion(&ap->tdev, host_handle, ap->port_no);
acpi_preset_companion(&ap->tdev, host_companion, ap->port_no);
if (ata_acpi_gtm(ap, &ap->__acpi_init_gtm) == 0)
ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
@ -196,17 +196,17 @@ void ata_acpi_bind_port(struct ata_port *ap)
void ata_acpi_bind_dev(struct ata_device *dev)
{
struct ata_port *ap = dev->link->ap;
acpi_handle port_handle = ACPI_HANDLE(&ap->tdev);
acpi_handle host_handle = ACPI_HANDLE(ap->host->dev);
acpi_handle parent_handle;
struct acpi_device *port_companion = ACPI_COMPANION(&ap->tdev);
struct acpi_device *host_companion = ACPI_COMPANION(ap->host->dev);
struct acpi_device *parent;
u64 adr;
/*
* For both sata/pata devices, host handle is required.
* For pata device, port handle is also required.
* For both sata/pata devices, host companion device is required.
* For pata device, port companion device is also required.
*/
if (libata_noacpi || !host_handle ||
(!(ap->flags & ATA_FLAG_ACPI_SATA) && !port_handle))
if (libata_noacpi || !host_companion ||
(!(ap->flags & ATA_FLAG_ACPI_SATA) && !port_companion))
return;
if (ap->flags & ATA_FLAG_ACPI_SATA) {
@ -214,13 +214,13 @@ void ata_acpi_bind_dev(struct ata_device *dev)
adr = SATA_ADR(ap->port_no, NO_PORT_MULT);
else
adr = SATA_ADR(ap->port_no, dev->link->pmp);
parent_handle = host_handle;
parent = host_companion;
} else {
adr = dev->devno;
parent_handle = port_handle;
parent = port_companion;
}
acpi_preset_companion(&dev->tdev, parent_handle, adr);
acpi_preset_companion(&dev->tdev, parent, adr);
register_hotplug_dock_device(ata_dev_acpi_handle(dev),
&ata_acpi_dev_dock_ops, dev, NULL, NULL);