diff options
author | Stefan Agner <stefan.agner@toradex.com> | 2017-09-26 16:04:08 +0200 |
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committer | Stefan Agner <stefan.agner@toradex.com> | 2017-09-26 18:11:18 +0200 |
commit | 1f4d46cea2bc1886a13ae9adfcd9e4243eed6a4c (patch) | |
tree | 2001999c70f8e46b192fc552590810aab35710e3 /drivers/usb/core/usb-acpi.c | |
parent | d152ae9d4704d8c7b3775e3b1a20e62aa3b1eed8 (diff) | |
parent | b52c9082f2eb3a6f7fbbc86fad3eaa2a1725da66 (diff) |
Merge tag 'v4.4.88' into toradex_vf_4.4-next
This is the 4.4.88 stable release
Diffstat (limited to 'drivers/usb/core/usb-acpi.c')
-rw-r--r-- | drivers/usb/core/usb-acpi.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index 2776cfe64c09..ef9cf4a21afe 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -127,6 +127,22 @@ out: */ #define USB_ACPI_LOCATION_VALID (1 << 31) +static struct acpi_device *usb_acpi_find_port(struct acpi_device *parent, + int raw) +{ + struct acpi_device *adev; + + if (!parent) + return NULL; + + list_for_each_entry(adev, &parent->children, node) { + if (acpi_device_adr(adev) == raw) + return adev; + } + + return acpi_find_child_device(parent, raw, false); +} + static struct acpi_device *usb_acpi_find_companion(struct device *dev) { struct usb_device *udev; @@ -174,8 +190,10 @@ static struct acpi_device *usb_acpi_find_companion(struct device *dev) int raw; raw = usb_hcd_find_raw_port_number(hcd, port1); - adev = acpi_find_child_device(ACPI_COMPANION(&udev->dev), - raw, false); + + adev = usb_acpi_find_port(ACPI_COMPANION(&udev->dev), + raw); + if (!adev) return NULL; } else { @@ -186,7 +204,9 @@ static struct acpi_device *usb_acpi_find_companion(struct device *dev) return NULL; acpi_bus_get_device(parent_handle, &adev); - adev = acpi_find_child_device(adev, port1, false); + + adev = usb_acpi_find_port(adev, port1); + if (!adev) return NULL; } |