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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>
This commit is contained in:
Kent Yoder 2012-09-04 11:18:21 -05:00 committed by James Morris
parent 9ddf6aa8cb
commit a40695edad
1 changed files with 2 additions and 2 deletions
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4
drivers/char/tpm/tpm_acpi.c
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@ -49,7 +49,7 @@ int read_log(struct tpm_bios_log *log)
{ {
struct acpi_tcpa *buff; struct acpi_tcpa *buff;
acpi_status status; acpi_status status;
struct acpi_table_header *virt; void __iomem *virt;
u64 len, start; u64 len, start;
if (log->bios_event_log != NULL) { if (log->bios_event_log != NULL) {
@ -102,7 +102,7 @@ int read_log(struct tpm_bios_log *log)
return -EIO; return -EIO;
} }
memcpy(log->bios_event_log, virt, len); memcpy_fromio(log->bios_event_log, virt, len);
acpi_os_unmap_memory(virt, len); acpi_os_unmap_memory(virt, len);
return 0; return 0;