linux-kernel - Re: [PATCH net-next 1/2] soc: qcom: ipa: Constify static qmi structs

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Message-ID: <ee9dfc18-092e-6a5c-d310-d4ce52db6042@ieee.org>
Date:   Wed, 25 Nov 2020 15:45:05 -0600
From:   Alex Elder <elder@...e.org>
To:     Rikard Falkeborn <rikard.falkeborn@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Alex Elder <elder@...nel.org>, Kalle Valo <kvalo@...eaurora.org>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org
Subject: Re: [PATCH net-next 1/2] soc: qcom: ipa: Constify static qmi structs

On 11/22/20 5:40 PM, Rikard Falkeborn wrote:
> These are only used as input arguments to qmi_handle_init() which
> accepts const pointers to both qmi_ops and qmi_msg_handler. Make them
> const to allow the compiler to put them in read-only memory.
> 
> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>

Good idea.  Thanks a lot.

Acked-by: Alex Elder <elder@...aro.org>

> ---
>   drivers/net/ipa/ipa_qmi.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ipa/ipa_qmi.c b/drivers/net/ipa/ipa_qmi.c
> index 5090f0f923ad..d2c3f273c233 100644
> --- a/drivers/net/ipa/ipa_qmi.c
> +++ b/drivers/net/ipa/ipa_qmi.c
> @@ -168,7 +168,7 @@ static void ipa_server_bye(struct qmi_handle *qmi, unsigned int node)
>   	ipa_qmi->indication_sent = false;
>   }
>   
> -static struct qmi_ops ipa_server_ops = {
> +static const struct qmi_ops ipa_server_ops = {
>   	.bye		= ipa_server_bye,
>   };
>   
> @@ -234,7 +234,7 @@ static void ipa_server_driver_init_complete(struct qmi_handle *qmi,
>   }
>   
>   /* The server handles two request message types sent by the modem. */
> -static struct qmi_msg_handler ipa_server_msg_handlers[] = {
> +static const struct qmi_msg_handler ipa_server_msg_handlers[] = {
>   	{
>   		.type		= QMI_REQUEST,
>   		.msg_id		= IPA_QMI_INDICATION_REGISTER,
> @@ -261,7 +261,7 @@ static void ipa_client_init_driver(struct qmi_handle *qmi,
>   }
>   
>   /* The client handles one response message type sent by the modem. */
> -static struct qmi_msg_handler ipa_client_msg_handlers[] = {
> +static const struct qmi_msg_handler ipa_client_msg_handlers[] = {
>   	{
>   		.type		= QMI_RESPONSE,
>   		.msg_id		= IPA_QMI_INIT_DRIVER,
> @@ -463,7 +463,7 @@ ipa_client_new_server(struct qmi_handle *qmi, struct qmi_service *svc)
>   	return 0;
>   }
>   
> -static struct qmi_ops ipa_client_ops = {
> +static const struct qmi_ops ipa_client_ops = {
>   	.new_server	= ipa_client_new_server,
>   };
>   
>