From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754192AbbCKPd4 (ORCPT ); Wed, 11 Mar 2015 11:33:56 -0400 Received: from gabe.freedesktop.org ([131.252.210.177]:52447 "EHLO gabe.freedesktop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753555AbbCKPdx (ORCPT ); Wed, 11 Mar 2015 11:33:53 -0400 X-Greylist: delayed 383 seconds by postgrey-1.27 at vger.kernel.org; Wed, 11 Mar 2015 11:33:53 EDT From: Eric Anholt To: linux-kernel@vger.kernel.org Cc: Tomasz Figa , "Rafael J. Wysocki" , Greg Kroah-Hartman , Eric Anholt Subject: [PATCH] PM / Domains: If an OF node is found but no device probed yet, defer. Date: Wed, 11 Mar 2015 08:27:28 -0700 Message-Id: <1426087648-3862-1-git-send-email-eric@anholt.net> X-Mailer: git-send-email 2.1.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If we've declared a power domain in the OF, and the OF node is found but the requested domain hasn't been registered on it yet, then we probably have just tried to probe before the power domain driver has. Defer our device's probe until it shows up. Signed-off-by: Eric Anholt --- I ran into this when turning my ad-hoc code for BCM2835 (Raspberry Pi) USB poweron support in the DWC2 controller to an OF-based power domain declaration. drivers/base/power/domain.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index ba4abbe..2b93c98 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2064,7 +2064,7 @@ EXPORT_SYMBOL_GPL(of_genpd_del_provider); struct generic_pm_domain *of_genpd_get_from_provider( struct of_phandle_args *genpdspec) { - struct generic_pm_domain *genpd = ERR_PTR(-ENOENT); + struct generic_pm_domain *genpd = ERR_PTR(-EPROBE_DEFER); struct of_genpd_provider *provider; mutex_lock(&of_genpd_mutex); -- 2.1.4