diff mbox

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

Message ID 1434579429-29449-2-git-send-email-honclo@linux.vnet.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Hon Ching (Vicky) Lo June 17, 2015, 10:17 p.m. UTC
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
implemented.

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

Comments

Ashley Lai June 18, 2015, 1:23 p.m. UTC | #1
Looks good.

Reviewed-by: Ashley Lai <ashley@ahsleylai.com>

Ashley Lai


------------------------------------------------------------------------------
Hon Ching (Vicky) Lo June 29, 2015, 6:52 p.m. UTC | #2
Hi Peter,

Please also commit this patch, if you accept it as well.


Thanks,
Vicky

-------- Forwarded Message --------
From: Ashley Lai <ashley@ashleylai.com>
To: Hon Ching(Vicky) Lo <honclo@linux.vnet.ibm.com>
Cc: tpmdd-devel@lists.sourceforge.net, Peter Huewe <PeterHuewe@gmx.de>,
Ashley Lai <ashley@ashleylai.com>, Vicky Lo <honclo2014@gmail.com>,
linux-kernel@vger.kernel.org, Joy Latten <jmlatten@linux.vnet.ibm.com>
>Subject: Re: [PATCH v4 2/2] TPM: remove unnecessary little endian
conversion
> Date: Thu, 18 Jun 2015 08:23:33 -0500 (CDT)

> Looks good.

> Reviewed-by: Ashley Lai <ashley@ahsleylai.com>

> Ashley Lai


On Wed, 2015-06-17 at 18:17 -0400, Hon Ching(Vicky) Lo wrote:
> 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
> implemented.
> 
> Signed-off-by: Hon Ching(Vicky) Lo <honclo@linux.vnet.ibm.com>
> Signed-off-by: Joy Latten <jmlatten@linux.vnet.ibm.com>
> ---
>  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;
> 



------------------------------------------------------------------------------
Don't Limit Your Business. Reach for the Cloud.
GigeNET's Cloud Solutions provide you with the tools and support that
you need to offload your IT needs and focus on growing your business.
Configured For All Businesses. Start Your Cloud Today.
https://www.gigenetcloud.com/
diff mbox

Patch

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;