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SubjectRe: [RFC PATCH 04/40] soundwire: intel: add debugfs register dump
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On 2019-07-26 01:39, Pierre-Louis Bossart wrote:
> +static void intel_debugfs_init(struct sdw_intel *sdw)
> +{
> + struct dentry *root = sdw->cdns.bus.debugfs;
> +
> + if (!root)
> + return;
> +
> + sdw->fs = debugfs_create_dir("intel-sdw", root);
> + if (IS_ERR_OR_NULL(sdw->fs)) {
> + dev_err(sdw->cdns.dev, "debugfs root creation failed\n");
> + sdw->fs = NULL;
> + return;
> + }
> +
> + debugfs_create_file("intel-registers", 0400, sdw->fs, sdw,
> + &intel_reg_fops);
> +
> + sdw_cdns_debugfs_init(&sdw->cdns, sdw->fs);
> +}

I believe there should be dummy equivalent of _init and _exit if debugfs
is not enabled (if these are defined already and I've missed it, please
ignore).

> +static void intel_debugfs_exit(struct sdw_intel *sdw)
> +{
> + debugfs_remove_recursive(sdw->fs);
> +}

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