linux-kernel - Re: [PATCH v5 3/5] driver core: handle -EPROBE_DEFER from bus

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Date:	Mon, 4 Jan 2016 16:31:00 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Marek Szyprowski <m.szyprowski@...sung.com>
Cc:	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Dan Williams <dan.j.williams@...el.com>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH v5 3/5] driver core: handle -EPROBE_DEFER from
 bus_type.match()

On Wed, Dec 23, 2015 at 11:59:26AM +0100, Marek Szyprowski wrote:
> From: Tomeu Vizoso <tomeu.vizoso@...labora.com>
> 
> Allow implementations of the match() callback in struct bus_type to
> return errors and if it's -EPROBE_DEFER then queue the device for
> deferred probing.
> 
> This is useful to buses such as AMBA in which devices are registered
> before their matching information can be retrieved from the HW
> (typically because a clock driver hasn't probed yet).
> 
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
> [changed if-else code structure, adjusted documentation to match the code,
> extended comments]
> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
> Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>

This patch _really_ needs an ack from Greg before I can merge it.

DRIVER CORE, KOBJECTS, DEBUGFS, KERNFS AND SYSFS
M:      Greg Kroah-Hartman <gregkh@...uxfoundation.org>
T:      git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.gitS:      Supported
F:      Documentation/kobject.txt
F:      drivers/base/

alternatively, the whole series should be taken by Greg, with my ack
for the amba and ARM bits.

Given that Greg is unlikely to respond this close to the merge window
(he's not responded to my messages about the amba-pl011 driver having
been messed up by the wrong patch set being taken...) I think this has
basically missed the 4.5 merge window.  Sorry.

-- 
RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/
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