linux-kernel - Re: [PATCH v11 3/3] dmaengine: ptdma: Add debugfs entries for PTDMA

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:   Thu, 5 Aug 2021 14:24:26 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Sanjay R Mehta <Sanju.Mehta@....com>
Cc:     vkoul@...nel.org, dan.j.williams@...el.com,
        Thomas.Lendacky@....com, Shyam-sundar.S-k@....com,
        Nehal-bakulchandra.Shah@....com, robh@...nel.org,
        mchehab+samsung@...nel.org, davem@...emloft.net,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org
Subject: Re: [PATCH v11 3/3] dmaengine: ptdma: Add debugfs entries for PTDMA

On Mon, Aug 02, 2021 at 05:32:55AM -0500, Sanjay R Mehta wrote:
> +void ptdma_debugfs_setup(struct pt_device *pt)
> +{
> +	struct pt_cmd_queue *cmd_q;
> +	char name[MAX_NAME_LEN + 1];
> +	struct dentry *debugfs_q_instance;
> +
> +	if (!debugfs_initialized())
> +		return;
> +
> +	debugfs_create_file("info", 0400, pt->dma_dev.dbg_dev_root, pt,
> +			    &pt_debugfs_info_fops);
> +
> +	debugfs_create_file("stats", 0400, pt->dma_dev.dbg_dev_root, pt,
> +			    &pt_debugfs_stats_fops);
> +
> +	cmd_q = &pt->cmd_q;
> +
> +	snprintf(name, MAX_NAME_LEN - 1, "q");

You are calling snprintf() to format a string to be "q"?  Why?  You can
just do:

> +
> +	debugfs_q_instance =
> +		debugfs_create_dir(name, pt->dma_dev.dbg_dev_root);

debugfs_create_dir("q", pt->....)

here instead.

thanks,

greg k-h