diff options
Diffstat (limited to 'drivers/usb/core/usb-acpi.c')
| -rw-r--r-- | drivers/usb/core/usb-acpi.c | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index 4e243c37f17f..5ca4070b1f38 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -16,7 +16,6 @@ #include <linux/acpi.h> #include <linux/pci.h> #include <linux/usb/hcd.h> -#include <acpi/acpi_bus.h> #include "usb.h" @@ -92,7 +91,7 @@ static int usb_acpi_check_port_connect_type(struct usb_device *hdev, int ret = 0; /* - * Accoding to ACPI Spec 9.13. PLD indicates whether usb port is + * According to ACPI Spec 9.13. PLD indicates whether usb port is * user visible and _UPC indicates whether it is connectable. If * the port was visible and connectable, it could be freely connected * and disconnected with USB devices. If no visible and connectable, @@ -127,7 +126,7 @@ out: return ret; } -static int usb_acpi_find_device(struct device *dev, acpi_handle *handle) +static struct acpi_device *usb_acpi_find_companion(struct device *dev) { struct usb_device *udev; acpi_handle *parent_handle; @@ -169,16 +168,15 @@ static int usb_acpi_find_device(struct device *dev, acpi_handle *handle) break; } - return -ENODEV; + return NULL; } /* root hub's parent is the usb hcd. */ - parent_handle = ACPI_HANDLE(dev->parent); - *handle = acpi_get_child(parent_handle, udev->portnum); - if (!*handle) - return -ENODEV; - return 0; + return acpi_find_child_device(ACPI_COMPANION(dev->parent), + udev->portnum, false); } else if (is_usb_port(dev)) { + struct acpi_device *adev = NULL; + sscanf(dev_name(dev), "port%d", &port_num); /* Get the struct usb_device point of port's hub */ udev = to_usb_device(dev->parent->parent); @@ -194,26 +192,27 @@ static int usb_acpi_find_device(struct device *dev, acpi_handle *handle) raw_port_num = usb_hcd_find_raw_port_number(hcd, port_num); - *handle = acpi_get_child(ACPI_HANDLE(&udev->dev), - raw_port_num); - if (!*handle) - return -ENODEV; + adev = acpi_find_child_device(ACPI_COMPANION(&udev->dev), + raw_port_num, false); + if (!adev) + return NULL; } else { parent_handle = usb_get_hub_port_acpi_handle(udev->parent, udev->portnum); if (!parent_handle) - return -ENODEV; + return NULL; - *handle = acpi_get_child(parent_handle, port_num); - if (!*handle) - return -ENODEV; + acpi_bus_get_device(parent_handle, &adev); + adev = acpi_find_child_device(adev, port_num, false); + if (!adev) + return NULL; } - usb_acpi_check_port_connect_type(udev, *handle, port_num); - } else - return -ENODEV; + usb_acpi_check_port_connect_type(udev, adev->handle, port_num); + return adev; + } - return 0; + return NULL; } static bool usb_acpi_bus_match(struct device *dev) @@ -224,7 +223,7 @@ static bool usb_acpi_bus_match(struct device *dev) static struct acpi_bus_type usb_acpi_bus = { .name = "USB", .match = usb_acpi_bus_match, - .find_device = usb_acpi_find_device, + .find_companion = usb_acpi_find_companion, }; int usb_acpi_register(void) |