Message-ID: <1d3c1df9-42b8-e451-f622-32d8c1e6d1b5@linux.intel.com>
Date:   Wed, 29 Dec 2021 15:49:29 +0200
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Subject: Re: [PATCH v2 13/23] counter: Provide alternative counter
 registration functions
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To:     Jonathan Cameron <jic23@kernel.org>,
        =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= <u.kleine-koenig@pengutronix.de>
Cc:     William Breathitt Gray <vilhelm.gray@gmail.com>,
        Lars-Peter Clausen <lars@metafoo.de>, kernel@pengutronix.de,
        Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        linux-iio@vger.kernel.org,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-kernel@vger.kernel.org
References: <20211227094526.698714-1-u.kleine-koenig@pengutronix.de>
 <20211227094526.698714-14-u.kleine-koenig@pengutronix.de>
 <20211228180017.37c2703d@jic23-huawei>
From:   Jarkko Nikula <jarkko.nikula@linux.intel.com>
In-Reply-To: <20211228180017.37c2703d@jic23-huawei>
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On 12/28/21 20:00, Jonathan Cameron wrote:
> On Mon, 27 Dec 2021 10:45:16 +0100
> Uwe Kleine-König         <u.kleine-koenig@pengutronix.de> wrote:
>> +	if (err < 0)
>> +		goto err_chrdev_add;
>> +
>> +	device_initialize(dev);
>> +	/* Configure device structure for Counter */
>> +	dev->type = &counter_device_type;
>> +	dev->bus = &counter_bus_type;
>> +	dev->devt = MKDEV(MAJOR(counter_devt), id);
> 
> As 0-day pointed out id not initialized.
> 
This was the reason why second counter instance initialization failed 
for me when testing the patch 17. I fixed it locally by changing the 
line a few rows above the MKDEV():

-	dev->id = err;
+	dev->id = id = err;