From: frowand.list@gmail.com (Frank Rowand)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/8] driver core: make deferring probe after init optional
Date: Mon, 28 May 2018 22:12:14 -0700 [thread overview]
Message-ID: <1765be22-4bd7-c870-926c-2956e46df1d9@gmail.com> (raw)
In-Reply-To: <20180524181834.GF4828@sirena.org.uk>
On 05/24/18 11:18, Mark Brown wrote:
> On Thu, May 24, 2018 at 12:50:17PM -0500, Rob Herring wrote:
>
>> Subsystems or drivers may opt-in to this behavior by calling
>> driver_deferred_probe_check_init_done() instead of just returning
>> -EPROBE_DEFER. They may use additional information from DT or kernel's
>> config to decide whether to continue to defer probe or not.
>
> Should userspace have some involvement in this decision? It knows if
> it's got any intention of loading modules for example. Kernel config
> checks might be good enough, though it's going to be a pain to work out
> if the relevant driver is built as a module for example.
>
A parallel issue is that loading an overlay could provide the resource
that will allow the deferred probe to complete. (That is, once we
finish implementing the run time overlays feature.)
-Frank
next prev parent reply other threads:[~2018-05-29 5:12 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-24 17:50 [PATCH v2 0/8] Make deferring probe forever optional Rob Herring
2018-05-24 17:50 ` [PATCH v2 1/8] driver core: make deferring probe after init optional Rob Herring
2018-05-24 18:18 ` Mark Brown
2018-05-24 20:25 ` Rob Herring
2018-05-25 11:47 ` Robin Murphy
2018-05-29 5:12 ` Frank Rowand [this message]
2018-05-29 14:46 ` Rob Herring
2018-05-24 18:56 ` Greg Kroah-Hartman
2018-05-24 19:42 ` Rob Herring
2018-05-24 19:00 ` Greg Kroah-Hartman
2018-05-24 20:57 ` Rob Herring
2018-05-25 12:20 ` Robin Murphy
2018-05-25 17:35 ` Rob Herring
2018-05-24 22:28 ` Bjorn Andersson
2018-05-24 23:47 ` Rob Herring
2018-05-24 17:50 ` [PATCH v2 2/8] driver core: add a deferred probe timeout Rob Herring
2018-05-24 19:01 ` Greg Kroah-Hartman
2018-05-24 19:45 ` Rob Herring
2018-05-24 19:51 ` Greg Kroah-Hartman
2018-05-24 17:50 ` [PATCH v2 3/8] dt-bindings: pinctrl: add a 'pinctrl-use-default' property Rob Herring
2018-05-24 17:50 ` [PATCH v2 4/8] arm: dts: bcm283x: mark the UART pin muxing nodes with pinctrl-use-default Rob Herring
2018-05-24 17:50 ` [PATCH v2 5/8] pinctrl: optionally stop deferring probe at end of initcalls Rob Herring
2018-05-30 7:00 ` Linus Walleij
2018-05-24 17:50 ` [PATCH v2 6/8] iommu: Stop " Rob Herring
2018-05-24 17:50 ` [PATCH v2 7/8] iommu: Remove IOMMU_OF_DECLARE Rob Herring
2018-05-25 11:31 ` Will Deacon
2018-05-28 6:53 ` Marek Szyprowski
2018-05-24 17:50 ` [PATCH v2 8/8] PM / Domains: Stop deferring probe at the end of initcall Rob Herring
2018-05-29 11:48 ` [PATCH v2 0/8] Make deferring probe forever optional Joerg Roedel
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