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Commit a40695ed authored by Kent Yoder's avatar Kent Yoder Committed by James Morris
Browse files

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: default avatarKent Yoder <key@linux.vnet.ibm.com>
Signed-off-by: default avatarJames Morris <james.l.morris@oracle.com>
parent 9ddf6aa8

drivers/char/tpm/tpm_acpi.c

+2 −2
Original line number Diff line number Diff line
@@ -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;