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| author |   Hans de Goede <hdegoede@redhat.com> | 2018-01-26 16:02:57 +0100 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-02-04 09:11:56 +0100 |
| commit | b0fd6772cfe10cd1edd65a376522e430e5f1bc58 (patch) | |
| tree | 70a3526f6aee75b5789d3d6be96a43e4e8b139e2 /drivers/pci | |
| parent | ACPI: export acpi_bus_get_status_handle() (diff) | |
| download | linux-dev-b0fd6772cfe10cd1edd65a376522e430e5f1bc58.tar.xz linux-dev-b0fd6772cfe10cd1edd65a376522e430e5f1bc58.zip | |
PCI: acpiphp_ibm: prepare for acpi_get_object_info() no longer returning status
acpi_get_object_info() is intended for early probe usage and as such should
not call any methods which may rely on OpRegions, but it used to also call
_STA to get the status, which on some systems does rely on OpRegions, this
behavior and the acpi_device_info.current_status member are being removed.
This commit prepares the acpiphp_ibm code for this by having it get the
status itself using acpi_bus_get_status_handle(). Note no error handling is
necessary on any errors acpi_bus_get_status_handle() leaves the value of
the passed in current_status at its 0 initialization value.
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_ibm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c index 984c7e8cec5a..8472c4a27f70 100644 --- a/drivers/pci/hotplug/acpiphp_ibm.c +++ b/drivers/pci/hotplug/acpiphp_ibm.c @@ -399,6 +399,7 @@ static acpi_status __init ibm_find_acpi_device(acpi_handle handle, u32 lvl, void *context, void **rv) { acpi_handle *phandle = (acpi_handle *)context; + unsigned long long current_status = 0; acpi_status status; struct acpi_device_info *info; int retval = 0; @@ -410,7 +411,9 @@ static acpi_status __init ibm_find_acpi_device(acpi_handle handle, return retval; } - if (info->current_status && (info->valid & ACPI_VALID_HID) && + acpi_bus_get_status_handle(handle, ¤t_status); + + if (current_status && (info->valid & ACPI_VALID_HID) && (!strcmp(info->hardware_id.string, IBM_HARDWARE_ID1) || !strcmp(info->hardware_id.string, IBM_HARDWARE_ID2))) { pr_debug("found hardware: %s, handle: %p\n", |