linux-kernel - Re: [PATCH v6 2/2] usb: typec: ucsi_glink: Increase buffer size to support UCSI v2

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Message-ID: <f2y4aposu5ddpwgue5gskumo5mjwkrod32ecbvveodgxrysg6u@zsq6ftoy4yqg>
Date: Thu, 23 Oct 2025 14:34:54 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Anjelique Melendez <anjelique.melendez@....qualcomm.com>
Cc: heikki.krogerus@...ux.intel.com, gregkh@...uxfoundation.org,
        lumag@...nel.org, neil.armstrong@...aro.org, johan+linaro@...nel.org,
        quic_bjorande@...cinc.com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v6 2/2] usb: typec: ucsi_glink: Increase buffer size to
 support UCSI v2

On Tue, Oct 21, 2025 at 05:45:54PM -0700, Anjelique Melendez wrote:
> UCSI v2 specification has increased the MSG_IN and MSG_OUT size from
> 16 bytes to 256 bytes each for the message exchange between OPM and PPM
> This makes the total buffer size increase from 48 bytes to 528 bytes.
> Update the buffer size to support this increase.
> 
> Signed-off-by: Anjelique Melendez <anjelique.melendez@....qualcomm.com>
> ---
>  drivers/usb/typec/ucsi/ucsi_glink.c | 80 +++++++++++++++++++++++++----
>  1 file changed, 70 insertions(+), 10 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry