linux-kernel - Re: [linux-dvb] [PATCH] dvb-core: Handle failures to create devices

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Message-ID: <Pine.LNX.4.58.0705011418130.309@shell2.speakeasy.net>
Date:	Tue, 1 May 2007 14:21:19 -0700 (PDT)
From:	Trent Piepho <xyzzy@...akeasy.org>
To:	Simon Arlott <simon@...e.lp0.eu>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux DVB <linux-dvb@...uxtv.org>
Subject: Re: [linux-dvb] [PATCH] dvb-core: Handle failures to create devices

On Tue, 1 May 2007, Simon Arlott wrote:
> dvb-core is not started early enough when device drivers that use dvb are
> compiled in so device_register_device fails (silently) since dvb_class is
> NULL, this runs dvb_init using subsys_initclass instead of module_init.
>
> dvb_register_device will now check the return value of class_device_create.

Good catch.

> +		printk("%s: failed to create device dvb%d.%s%d (%ld)\n", __FUNCTION__,
> +			adap->num, dnames[type], id, PTR_ERR(clsdev));
> +		return PTR_ERR(clsdev);

printk(KERN_ERR "...."

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