efi: initialize efi.runtime_version to make query_variable_info/update_capsule workable

Seiji Aguchi · Matt Fleming · commit d6cf86d8f232 · 2012-09-17T13:29:22.000+01:00
A value of efi.runtime_version is checked before calling
update_capsule()/query_variable_info() as follows.
But it isn't initialized anywhere.

&lt;snip&gt;
static efi_status_t virt_efi_query_variable_info(u32 attr,
                                                 u64 *storage_space,
                                                 u64 *remaining_space,
                                                 u64 *max_variable_size)
{
        if (efi.runtime_version &lt; EFI_2_00_SYSTEM_TABLE_REVISION)
                return EFI_UNSUPPORTED;
&lt;snip&gt;

This patch initializes a value of efi.runtime_version at boot time.

Signed-off-by: Seiji Aguchi &lt;seiji.aguchi@hds.com&gt;
Acked-by: Matthew Garrett &lt;mjg@redhat.com&gt;
Signed-off-by: Matt Fleming &lt;matt.fleming@intel.com&gt;
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
@@ -890,6 +890,7 @@ void __init efi_enter_virtual_mode(void)
 	 *
 	 * Call EFI services through wrapper functions.
 	 */
+	efi.runtime_version = efi_systab.fw_revision;
 	efi.get_time = virt_efi_get_time;
 	efi.set_time = virt_efi_set_time;
 	efi.get_wakeup_time = virt_efi_get_wakeup_time;

Original file line number	Diff line number	Diff line change
`@@ -890,6 +890,7 @@ void __init efi_enter_virtual_mode(void)`
`890`	`890`	`*`
`891`	`891`	`* Call EFI services through wrapper functions.`
`892`	`892`	`*/`
	`893`	`+ efi.runtime_version = efi_systab.fw_revision;`
`893`	`894`	`efi.get_time = virt_efi_get_time;`
`894`	`895`	`efi.set_time = virt_efi_set_time;`
`895`	`896`	`efi.get_wakeup_time = virt_efi_get_wakeup_time;`