linux-kernel - Re: [PATCH 04/29] drivers: base: add notifier for failed driver bind

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Date:	Mon, 25 Aug 2014 23:18:23 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	Marek Szyprowski <m.szyprowski@...sung.com>
Cc:	iommu@...ts.linux-foundation.org,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linaro-mm-sig@...ts.linaro.org, Arnd Bergmann <arnd@...db.de>,
	Shaik Ameer Basha <shaik.ameer@...sung.com>,
	Cho KyongHo <pullip.cho@...sung.com>,
	Thierry Reding <treding@...dia.com>,
	Olof Johansson <olof@...om.net>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Rob Herring <robh@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Inki Dae <inki.dae@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [PATCH 04/29] drivers: base: add notifier for failed driver bind

On Tue, Aug 05, 2014 at 12:47:32PM +0200, Marek Szyprowski wrote:
> +	if (failed && dev->bus)
> +		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
> +					     BUS_NOTIFY_DRVBIND_FAILED, dev);
> +

Why can't you just use the notifier for BUS_NOTIFY_UNBIND_DRIVER or
BUS_NOTIFY_UNBOUND_DRIVER when something goes wrong in driver
initialization?


	Joerg

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