Re: [PATCH V3 1/6] SLIMbus: Device management on SLIMbus

From: Mark Brown <broonie@kernel.org>
To: Sagar Dharia <sdharia@codeaurora.org>
Cc: gregkh@linuxfoundation.org, bp@suse.de, poeschel@lemonage.de,
	treding@nvidia.com, gong.chen@linux.intel.com,
	andreas.noever@gmail.com, alan@linux.intel.com,
	mathieu.poirier@linaro.org, daniel@ffwll.ch, oded.gabbay@amd.com,
	jkosina@suse.cz, sharon.dvir1@mail.huji.ac.il, joe@perches.com,
	davem@davemloft.net, james.hogan@imgtec.com,
	michael.opdenacker@free-electrons.com,
	daniel.thompson@linaro.org, robh+dt@kernel.org,
	pawel.moll@arm.com, mark.rutland@arm.com,
	ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	kheitke@audience.com, mlocke@codeaurora.org,
	agross@codeaurora.org, linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH V3 1/6] SLIMbus: Device management on SLIMbus
Date: Fri, 14 Aug 2015 19:17:54 +0100	[thread overview]
Message-ID: <20150814181754.GC10748@sirena.org.uk> (raw)
In-Reply-To: <1438585190-11894-2-git-send-email-sdharia@codeaurora.org>

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On Mon, Aug 03, 2015 at 12:59:45AM -0600, Sagar Dharia wrote:

> +	INIT_WORK(&sbw->wd, slim_report);
> +	sbw->sb = sb;
> +	sbw->report = report;
> +	if (!queue_work(ctrl->wq, &sbw->wd))
> +		kfree(sbw);

Should we not complain if we fail to schedule the work?

> +#define slim_device_attr_gr NULL
> +#define slim_device_uevent NULL
> +
> +static struct device_type slim_dev_type = {
> +	.groups		= slim_device_attr_gr,
> +	.uevent		= slim_device_uevent,

Why these NULL defines?  Just add the struct members as definitions are
added.

> +	dev_set_name(&sbdev->dev, "%s", sbdev->name);
> +	mutex_lock(&ctrl->m_ctrl);
> +	list_add_tail(&sbdev->dev_list, &ctrl->devs);
> +	mutex_unlock(&ctrl->m_ctrl);

Doesn't the driver model list of children of the controller give you
a list of devices connected to the controller?

> +	/* Can't register until after driver model init */
> +	if (WARN_ON(!slimbus_type.p)) {
> +		ret = -EAGAIN;
> +		goto out_list;
> +	}

Shouldn't the core code handle this for us?

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