diff options
| author | Mario Limonciello <mario.limonciello@dell.com> | 2017-11-16 22:13:12 -0600 |
|---|---|---|
| committer | Darren Hart (VMware) <dvhart@infradead.org> | 2017-11-20 12:38:43 -0800 |
| commit | 4255c30fe88ee3cc99bbeac7974db27e4217a497 (patch) | |
| tree | 4950a7b7da05a1b76e52ba02278fab796faf302b /drivers/platform/x86/dell-wmi-descriptor.h | |
| parent | aaa40965d2342137d756121993c395e2a7463a8d (diff) | |
| download | linux-4255c30fe88ee3cc99bbeac7974db27e4217a497.tar.bz2 | |
platform/x86: dell-smbios-wmi: Disable userspace interface if missing hotfix
The Dell SMBIOS WMI interface will fail for some more complex calls unless
a WMI hotfix has been included. Most platforms have this fix available in
a maintenance BIOS release. In the case the driver is loaded on a
platform without this fix, disable the userspace interface.
A hotfix indicator is present in the dell-wmi-descriptor that represents
whether or not more complex calls will work properly.
"Simple" calls such as those used by dell-laptop and dell-wmi will continue
to work properly so dell-smbios-wmi should not be blocked from binding and
being used as the dell-smbios dispatcher.
Suggested-by: Girish Prakash <girish.prakash@dell.com>
Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Diffstat (limited to 'drivers/platform/x86/dell-wmi-descriptor.h')
| -rw-r--r-- | drivers/platform/x86/dell-wmi-descriptor.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/platform/x86/dell-wmi-descriptor.h b/drivers/platform/x86/dell-wmi-descriptor.h index 1e8cb96ffd78..a6123a4d06a7 100644 --- a/drivers/platform/x86/dell-wmi-descriptor.h +++ b/drivers/platform/x86/dell-wmi-descriptor.h @@ -23,5 +23,6 @@ int dell_wmi_get_descriptor_valid(void); bool dell_wmi_get_interface_version(u32 *version); bool dell_wmi_get_size(u32 *size); +bool dell_wmi_get_hotfix(u32 *hotfix); #endif |