linux-kernel - Re: [PATCH v6 1/4] mailbox: qcom-apcs-ipc: make regmap max

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 13 Jul 2022 15:43:37 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Robert Marko <robimarko@...il.com>
Cc:     agross@...nel.org, konrad.dybcio@...ainline.org,
        jassisinghbrar@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        dmitry.baryshkov@...aro.org
Subject: Re: [PATCH v6 1/4] mailbox: qcom-apcs-ipc: make regmap max_register
 configurable

On Thu 07 Jul 12:37 CDT 2022, Robert Marko wrote:

> APCS register space in IPQ8074 is 0x6000 so regmap max_register needs to
> be 0x5ffc.
> 
> Instead of making it global, make max_register configurable via match data.
> 
> Signed-off-by: Robert Marko <robimarko@...il.com>

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Regards,
Bjorn

> ---
>  drivers/mailbox/qcom-apcs-ipc-mailbox.c | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/mailbox/qcom-apcs-ipc-mailbox.c b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> index 80a54d81412e..c05f3276d02c 100644
> --- a/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> +++ b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
> @@ -27,6 +27,7 @@ struct qcom_apcs_ipc {
>  struct qcom_apcs_ipc_data {
>  	int offset;
>  	char *clk_name;
> +	unsigned int max_register;
>  };
>  
>  static const struct qcom_apcs_ipc_data ipq6018_apcs_data = {
> @@ -53,7 +54,7 @@ static const struct qcom_apcs_ipc_data sdx55_apcs_data = {
>  	.offset = 0x1008, .clk_name = "qcom-sdx55-acps-clk"
>  };
>  
> -static const struct regmap_config apcs_regmap_config = {
> +static struct regmap_config apcs_regmap_config = {
>  	.reg_bits = 32,
>  	.reg_stride = 4,
>  	.val_bits = 32,
> @@ -91,12 +92,17 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev)
>  	if (IS_ERR(base))
>  		return PTR_ERR(base);
>  
> +	apcs_data = of_device_get_match_data(&pdev->dev);
> +	if (!apcs_data)
> +		return -ENODATA;
> +
> +	if (apcs_data->max_register)
> +		apcs_regmap_config.max_register = apcs_data->max_register;
> +
>  	regmap = devm_regmap_init_mmio(&pdev->dev, base, &apcs_regmap_config);
>  	if (IS_ERR(regmap))
>  		return PTR_ERR(regmap);
>  
> -	apcs_data = of_device_get_match_data(&pdev->dev);
> -
>  	apcs->regmap = regmap;
>  	apcs->offset = apcs_data->offset;
>  
> -- 
> 2.36.1
>