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Date: Thu, 17 Dec 2015 12:07:12 -0500
From: Matthew Wilcox <willy@linux.intel.com>
Subject: Re: -next regression: "driver cohandle -EPROBE_DEFER from
 bus_type.match()"
Message-ID: <20151217170712.GE2457@linux.intel.com>
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To: Dan Williams <dan.j.williams@intel.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>, Stephen Rothwell <sfr@canb.auug.org.au>, tomeu.vizoso@collabora.com, "linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, m.szyprowski@samsung.com
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On Thu, Dec 17, 2015 at 08:48:09AM -0800, Dan Williams wrote:
> On Thu, Dec 17, 2015 at 7:51 AM, Dan Williams <dan.j.williams@intel.com> wrote:
> How about just checking for EPROBE_DEFER, every other non-zero value is success.

How about using IS_ERR_VALUE()?  If it's good enough for IS_ERR(),
it's good enough for this case.