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authorKent Yoder <key@linux.vnet.ibm.com>2012-09-04 11:18:21 -0500
committerJames Morris <james.l.morris@oracle.com>2012-09-12 13:18:31 +1000
commita40695edad6a69561b299272028c172e2d981666 (patch)
tree6712703f4f6c89fc47b42bf7fcf6a672810b1603 /drivers/char/tpm
parent9ddf6aa8cbc07764c7fe33cfdb8644ca5e828252 (diff)
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>
Diffstat (limited to 'drivers/char/tpm')
-rw-r--r--drivers/char/tpm/tpm_acpi.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/tpm/tpm_acpi.c b/drivers/char/tpm/tpm_acpi.c
index fe3fa9431dc..56051d0c97a 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;