tpm: fix tpm_acpi sparse warning on different address spaces

acpi_os_map_memory expects its return value to be in the __iomem address
space. Tag the variable we're using as such and use memcpy_fromio to
avoid further sparse warnings.

Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/char/tpm/tpm_acpi.c b/drivers/char/tpm/tpm_acpi.c
index fe3fa9431dc9..56051d0c97a2 100644
--- a/drivers/char/tpm/tpm_acpi.c
+++ b/drivers/char/tpm/tpm_acpi.c
@@ -49,7 +49,7 @@ int read_log(struct tpm_bios_log *log)
 {
         struct acpi_tcpa *buff;
         acpi_status status;
-        struct acpi_table_header *virt;
+        void __iomem *virt;
         u64 len, start;
 
         if (log->bios_event_log != NULL) {
@@ -102,7 +102,7 @@ int read_log(struct tpm_bios_log *log)
                 return -EIO;
         }
 
-        memcpy(log->bios_event_log, virt, len);
+        memcpy_fromio(log->bios_event_log, virt, len);
 
         acpi_os_unmap_memory(virt, len);
         return 0;