linux-kernel - Re: [RESEND PATCH] wcn36xx: Allow firmware name to be overridden by DT

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]

Message-ID: <87fsuv59sf.fsf@codeaurora.org>
Date:   Fri, 27 Aug 2021 15:53:04 +0300
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, wcn36xx@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Stephan Gerhold <stephan@...hold.net>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Aníbal Limón 
        <anibal.limon@...aro.org>
Subject: Re: [RESEND PATCH] wcn36xx: Allow firmware name to be overridden by DT

Bjorn Andersson <bjorn.andersson@...aro.org> writes:

> The WLAN NV firmware blob differs between platforms, and possibly
> devices, so add support in the wcn36xx driver for reading the path of
> this file from DT in order to allow these files to live in a generic
> file system (or linux-firmware).
>
> For some reason the parent (wcnss_ctrl) also needs to upload this blob,
> so rather than specifying the same information in both nodes wcn36xx
> reads the string from the parent's of_node.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Tested-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> Tested-by: Aníbal Limón <anibal.limon@...aro.org>

[...]

> --- a/drivers/net/wireless/ath/wcn36xx/main.c
> +++ b/drivers/net/wireless/ath/wcn36xx/main.c
> @@ -1500,6 +1500,13 @@ static int wcn36xx_probe(struct platform_device *pdev)
>  		goto out_wq;
>  	}
>  
> +	wcn->nv_file = WLAN_NV_FILE;
> +	ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file);
> +	if (ret < 0 && ret != -EINVAL) {
> +		wcn36xx_err("failed to read \"firmware-name\" property\n");

I included the value of ret to the error print to ease debugging.
Modified patch is soon in the pending branch, please take a look.

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches