From 9c5ad36d987a1b06f6b0b9dc7bc61a45d277455d Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 28 Nov 2013 23:58:28 +0100 Subject: ACPI / bind: Redefine acpi_preset_companion() 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 Reviewed-by: Aaron Lu Tested-by: Aaron Lu # for ATA binding diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 12b2acb..c0d18b2 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -149,6 +149,7 @@ struct acpi_device *acpi_find_child_device(struct acpi_device *parent, } return ret; } +EXPORT_SYMBOL_GPL(acpi_find_child_device); acpi_handle acpi_get_child(acpi_handle handle, u64 addr) { @@ -298,15 +299,6 @@ int acpi_unbind_one(struct device *dev) } EXPORT_SYMBOL_GPL(acpi_unbind_one); -void acpi_preset_companion(struct device *dev, acpi_handle parent, u64 addr) -{ - struct acpi_device *adev; - - if (!acpi_bus_get_device(acpi_get_child(parent, addr), &adev)) - ACPI_COMPANION_SET(dev, adev); -} -EXPORT_SYMBOL_GPL(acpi_preset_companion); - static int acpi_platform_notify(struct device *dev) { struct acpi_bus_type *type = acpi_get_bus_type(dev); diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 8e22d97..9e69a53 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -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); diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 157b570..92d1ba8 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -308,7 +308,7 @@ static void sdio_acpi_set_handle(struct sdio_func *func) struct mmc_host *host = func->card->host; u64 addr = (host->slotno << 16) | func->num; - acpi_preset_companion(&func->dev, ACPI_HANDLE(host->parent), addr); + acpi_preset_companion(&func->dev, ACPI_COMPANION(host->parent), addr); } #else static inline void sdio_acpi_set_handle(struct sdio_func *func) {} diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index a1a48f2..918eaab 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -435,7 +435,6 @@ struct acpi_pci_root { struct acpi_device *acpi_find_child_device(struct acpi_device *parent, u64 address, bool check_children); acpi_handle acpi_get_child(acpi_handle handle, u64 addr); -void acpi_preset_companion(struct device *dev, acpi_handle parent, u64 addr); int acpi_is_root_bridge(acpi_handle); struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); diff --git a/include/linux/acpi.h b/include/linux/acpi.h index d9099b1..115c610 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -53,6 +53,12 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev) #define ACPI_COMPANION_SET(dev, adev) ACPI_COMPANION(dev) = (adev) #define ACPI_HANDLE(dev) acpi_device_handle(ACPI_COMPANION(dev)) +static inline void acpi_preset_companion(struct device *dev, + struct acpi_device *parent, u64 addr) +{ + ACPI_COMPANION_SET(dev, acpi_find_child_device(parent, addr, NULL)); +} + static inline const char *acpi_dev_name(struct acpi_device *adev) { return dev_name(&adev->dev); -- cgit v0.10.2