[PATCH v4 2/2] TPM: remove unnecessary little endian conversion

From: Hon Ching(Vicky) Lo
Date: Wed Jun 17 2015 - 18:18:32 EST

The base pointer for the event log is allocated in the local
kernel (in prom_instantiate_sml()), therefore it is already in
the host's endian byte order and requires no conversion.

The content of the 'basep' pointer in read_log() stores the
base address of the log. This patch ensures that it is correctly

Signed-off-by: Hon Ching(Vicky) Lo <honclo@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Joy Latten <jmlatten@xxxxxxxxxxxxxxxxxx>
drivers/char/tpm/tpm_of.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/char/tpm/tpm_of.c b/drivers/char/tpm/tpm_of.c
index c002d1b..62a22ce 100644
--- a/drivers/char/tpm/tpm_of.c
+++ b/drivers/char/tpm/tpm_of.c
@@ -24,7 +24,7 @@ int read_log(struct tpm_bios_log *log)
struct device_node *np;
const u32 *sizep;
- const __be64 *basep;
+ const u64 *basep;

if (log->bios_event_log != NULL) {
pr_err("%s: ERROR - Eventlog already initialized\n", __func__);
@@ -63,7 +63,7 @@ int read_log(struct tpm_bios_log *log)

log->bios_event_log_end = log->bios_event_log + *sizep;

- memcpy(log->bios_event_log, __va(be64_to_cpup(basep)), *sizep);
+ memcpy(log->bios_event_log, __va(*basep), *sizep);

return 0;


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/