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authorHans de Goede <hdegoede@redhat.com>2018-01-26 18:02:57 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-02-04 11:11:56 +0300
commitb0fd6772cfe10cd1edd65a376522e430e5f1bc58 (patch)
tree70a3526f6aee75b5789d3d6be96a43e4e8b139e2 /drivers/pci
parent5a98231f554779fb1649f477b70bed1fd17222f2 (diff)
downloadlinux-b0fd6772cfe10cd1edd65a376522e430e5f1bc58.tar.xz
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.c5
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, &current_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",