Message-ID: <1434512299.2689.62.camel@perches.com>
Subject: Re: [PATCH V2 1/6] SLIMbus: Device management on SLIMbus
From: Joe Perches <joe@perches.com>
To: Sagar Dharia <sdharia@codeaurora.org>
Cc: gregkh@linuxfoundation.org, bp@suse.de, poeschel@lemonage.de,
        treding@nvidia.com, broonie@kernel.org, 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, davem@davemloft.net,
        james.hogan@imgtec.com, michael.opdenacker@free-electrons.com,
        daniel.thompson@linaro.org, linux-kernel@vger.kernel.org,
        nkaje@codeaurora.org, kheitke@audience.com, mlocke@codeaurora.org,
        agross@codeaurora.org, linux-arm-msm@vger.kernel.org
Date: Tue, 16 Jun 2015 20:38:19 -0700
In-Reply-To: <1434505564-14333-2-git-send-email-sdharia@codeaurora.org>
References: <1434505564-14333-1-git-send-email-sdharia@codeaurora.org>
	 <1434505564-14333-2-git-send-email-sdharia@codeaurora.org>
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On Tue, 2015-06-16 at 19:45 -0600, Sagar Dharia wrote:
> SLIMbus (Serial Low Power Interchip Media Bus) is a specification
> developed by MIPI (Mobile Industry Processor Interface) alliance.
> SLIMbus is a 2-wire implementation, which is used to communicate with
> peripheral components like audio-codec.
[]
> diff --git a/drivers/slimbus/slimbus.c b/drivers/slimbus/slimbus.c
[]
> +static bool slim_eaddr_equal(struct slim_eaddr *a, struct slim_eaddr *b)
> +{
> +	return (a->manf_id == b->manf_id &&
> +		a->prod_code == b->prod_code &&
> +		a->dev_index == b->dev_index &&
> +		a->instance == b->instance);
> +}
> +
> +static const struct slim_device_id *
> +slim_match(const struct slim_device_id *id, const struct slim_device *slim_dev)
> +{
> +	while (id->manf_id != 0 || id->prod_code != 0) {
> +		if (id->manf_id == slim_dev->e_addr.manf_id &&
> +		    id->prod_code == slim_dev->e_addr.prod_code &&
> +		    id->dev_index == slim_dev->e_addr.dev_index)
> +			return id;
> +		id++;
> +	}
> +	return NULL;
> +}
> +
> +static int slim_device_match(struct device *dev, struct device_driver *driver)
> +{
> +	struct slim_device *slim_dev;
> +	struct slim_driver *drv = to_slim_driver(driver);
> +
> +	if (dev->type != &slim_dev_type)
> +		return 0;
> +
> +	slim_dev = to_slim_device(dev);
> +	if (drv->id_table)
> +		return slim_match(drv->id_table, slim_dev) != NULL;
> +	return 0;
> +}

This should probably be a bool function return.

Maybe this:

static bool slim_device_match(struct device *dev, struct device_driver *driver)
{
	struct slim_driver *drv = to_slim_driver(driver);

	if (dev->type != &slim_dev_type || !drv->id_table)
		return false;

	return slim_match(drv->id_table, to_slim_device(dev));
}


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