linux-kernel - Re: [PATCH 4/8] usb: typec: ucsi: glink: use le32 for message data

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Date: Tue, 16 Apr 2024 19:28:38 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 4/8] usb: typec: ucsi: glink: use le32 for message data

On 16/04/2024 04:20, Dmitry Baryshkov wrote:
> The message structures as transferred by the PMIC_GLINK use le32 for
> data encoding. Correct struct accessors to follow the lead of the main
> pmic_glink.c driver.
> 
> Fixes: 62b5412b1f4a ("usb: typec: ucsi: add PMIC Glink UCSI driver")
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>   drivers/usb/typec/ucsi/ucsi_glink.c | 10 +++++-----
>   1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c
> index 6be9d89d4a28..d029cc9d82e3 100644
> --- a/drivers/usb/typec/ucsi/ucsi_glink.c
> +++ b/drivers/usb/typec/ucsi/ucsi_glink.c
> @@ -33,7 +33,7 @@ struct ucsi_read_buf_req_msg {
>   struct ucsi_read_buf_resp_msg {
>   	struct pmic_glink_hdr   hdr;
>   	u8                      buf[UCSI_BUF_SIZE];
> -	u32                     ret_code;
> +	__le32                  ret_code;
>   };
>   
>   struct ucsi_write_buf_req_msg {
> @@ -44,13 +44,13 @@ struct ucsi_write_buf_req_msg {
>   
>   struct ucsi_write_buf_resp_msg {
>   	struct pmic_glink_hdr   hdr;
> -	u32                     ret_code;
> +	__le32                  ret_code;
>   };
>   
>   struct ucsi_notify_ind_msg {
>   	struct pmic_glink_hdr   hdr;
> -	u32                     notification;
> -	u32                     receiver;
> +	__le32                  notification;
> +	__le32                  receiver;
>   	u32                     reserved;
>   };
>   
> @@ -255,7 +255,7 @@ static void pmic_glink_ucsi_write_ack(struct pmic_glink_ucsi *ucsi, const void *
>   	if (resp->ret_code)
>   		return;
>   
> -	ucsi->sync_val = resp->ret_code;
> +	ucsi->sync_val = le32_to_cpu(resp->ret_code);
>   	complete(&ucsi->write_ack);
>   }
>   
> 

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>