diff mbox series

[v2,09/15] misc/mei/hdcp: Fix AUTH_STREAM_REQ cmd buffer len

Message ID 20201020133906.23710-10-anshuman.gupta@intel.com
State New, archived
Headers show
Series HDCP 2.2 DP MST Support | expand

Commit Message

Anshuman Gupta Oct. 20, 2020, 1:39 p.m. UTC
Fix the size of WIRED_REPEATER_AUTH_STREAM_REQ cmd buffer size.
It is based upon the actual number of MST streams and size
of wired_cmd_repeater_auth_stream_req_in.
Excluding the size of hdcp_cmd_header.

Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
---
 drivers/misc/mei/hdcp/mei_hdcp.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Jani Nikula Oct. 20, 2020, 6:32 p.m. UTC | #1
On Tue, 20 Oct 2020, Anshuman Gupta <anshuman.gupta@intel.com> wrote:
> Fix the size of WIRED_REPEATER_AUTH_STREAM_REQ cmd buffer size.
> It is based upon the actual number of MST streams and size
> of wired_cmd_repeater_auth_stream_req_in.
> Excluding the size of hdcp_cmd_header.
>
> Cc: Tomas Winkler <tomas.winkler@intel.com>
> Cc: Ramalingam C <ramalingam.c@intel.com>
> Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>

Tomas, ack to merge this via drm-intel?

Thanks,
Jani.

> ---
>  drivers/misc/mei/hdcp/mei_hdcp.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
> index 9ae9669e46ea..b10d266fb60a 100644
> --- a/drivers/misc/mei/hdcp/mei_hdcp.c
> +++ b/drivers/misc/mei/hdcp/mei_hdcp.c
> @@ -569,8 +569,7 @@ static int mei_hdcp_verify_mprime(struct device *dev,
>  	verify_mprime_in->header.api_version = HDCP_API_VERSION;
>  	verify_mprime_in->header.command_id = WIRED_REPEATER_AUTH_STREAM_REQ;
>  	verify_mprime_in->header.status = ME_HDCP_STATUS_SUCCESS;
> -	verify_mprime_in->header.buffer_len =
> -			WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN;
> +	verify_mprime_in->header.buffer_len = cmd_size  - sizeof(struct hdcp_cmd_header);
>  
>  	verify_mprime_in->port.integrated_port_type = data->port_type;
>  	verify_mprime_in->port.physical_port = (u8)data->fw_ddi;
Winkler, Tomas Oct. 21, 2020, 4:30 p.m. UTC | #2
> 
> On Tue, 20 Oct 2020, Anshuman Gupta <anshuman.gupta@intel.com> wrote:
> > Fix the size of WIRED_REPEATER_AUTH_STREAM_REQ cmd buffer size.
> > It is based upon the actual number of MST streams and size of
> > wired_cmd_repeater_auth_stream_req_in.
> > Excluding the size of hdcp_cmd_header.
> >
> > Cc: Tomas Winkler <tomas.winkler@intel.com>
> > Cc: Ramalingam C <ramalingam.c@intel.com>
> > Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
> 
> Tomas, ack to merge this via drm-intel?

I have no problem with merging it via drm-intel,  just see a little nitpick bellow:
> Thanks,
> Jani.
> 
> > ---
> >  drivers/misc/mei/hdcp/mei_hdcp.c | 3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c
> > b/drivers/misc/mei/hdcp/mei_hdcp.c
> > index 9ae9669e46ea..b10d266fb60a 100644
> > --- a/drivers/misc/mei/hdcp/mei_hdcp.c
> > +++ b//
> > @@ -569,8 +569,7 @@ static int mei_hdcp_verify_mprime(struct device
> *dev,
> >  	verify_mprime_in->header.api_version = HDCP_API_VERSION;
> >  	verify_mprime_in->header.command_id =
> WIRED_REPEATER_AUTH_STREAM_REQ;
> >  	verify_mprime_in->header.status = ME_HDCP_STATUS_SUCCESS;
> > -	verify_mprime_in->header.buffer_len =
> > -
> 	WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN;
> > +	verify_mprime_in->header.buffer_len = cmd_size  - sizeof(struct
> > +hdcp_cmd_header);

 I believe the following annotation would be  preferable: 
	cmd_size - sizeof(verify_mprime_in->header)

> >
> >  	verify_mprime_in->port.integrated_port_type = data->port_type;
> >  	verify_mprime_in->port.physical_port = (u8)data->fw_ddi;
> 
> --
> Jani Nikula, Intel Open Source Graphics Center
diff mbox series

Patch

diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
index 9ae9669e46ea..b10d266fb60a 100644
--- a/drivers/misc/mei/hdcp/mei_hdcp.c
+++ b/drivers/misc/mei/hdcp/mei_hdcp.c
@@ -569,8 +569,7 @@  static int mei_hdcp_verify_mprime(struct device *dev,
 	verify_mprime_in->header.api_version = HDCP_API_VERSION;
 	verify_mprime_in->header.command_id = WIRED_REPEATER_AUTH_STREAM_REQ;
 	verify_mprime_in->header.status = ME_HDCP_STATUS_SUCCESS;
-	verify_mprime_in->header.buffer_len =
-			WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN;
+	verify_mprime_in->header.buffer_len = cmd_size  - sizeof(struct hdcp_cmd_header);
 
 	verify_mprime_in->port.integrated_port_type = data->port_type;
 	verify_mprime_in->port.physical_port = (u8)data->fw_ddi;