From: Aili Yao <yaoaili@xxxxxxxxxxxx>
>From commit 6915564dc5a8 ("ACPI: OSL: Change the type of
acpi_os_map_generic_address() return value"),acpi_os_map_generic_address
will return logical address or NULL for error, but
pre_map_gar_callback and related apei_map_generic_address ,for
ACPI_ADR_SPACE_SYSTEM_IO case, it should be also return 0,as it's a
normal case, but now it will return -ENXIO. so check it out for such
case to avoid einj module initialization fail.
Tested-by: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: James Morse <james.morse@xxxxxxx>
Signed-off-by: Aili Yao <yaoaili@xxxxxxxxxxxx>
---
drivers/acpi/apei/apei-base.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c
index 552fd9ffaca4..3294cc8dc073 100644
--- a/drivers/acpi/apei/apei-base.c
+++ b/drivers/acpi/apei/apei-base.c
@@ -633,6 +633,10 @@ int apei_map_generic_address(struct acpi_generic_address *reg)
if (rc)
return rc;
+ /* IO space doesn't need mapping */
+ if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+ return 0;
+
if (!acpi_os_map_generic_address(reg))
return -ENXIO;
--
2.18.4
