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From: holler@ahsoftware.de (Alexander Holler)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 08/16] deps: dts: kirkwood: dockstar: add dependency ehci -> usb power regulator
Date: Wed, 26 Aug 2015 14:28:20 +0200	[thread overview]
Message-ID: <1440592108-3740-9-git-send-email-holler@ahsoftware.de> (raw)
In-Reply-To: <1440592108-3740-1-git-send-email-holler@ahsoftware.de>

This serves as an example how easy it is to fix an initialization order
if the order depends on the DT. No source code changes will be necessary.

If you look at the dependency graph for the dockstar, you will see that
there is no dependency between ehci and the usb power regulator. This
ends up with the fact that the regulator will be initialized after ehci.

Fix this by adding one dependency to the .dts.

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
---
 arch/arm/boot/dts/kirkwood-dockstar.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/kirkwood-dockstar.dts b/arch/arm/boot/dts/kirkwood-dockstar.dts
index 8497363..426d8840 100644
--- a/arch/arm/boot/dts/kirkwood-dockstar.dts
+++ b/arch/arm/boot/dts/kirkwood-dockstar.dts
@@ -107,3 +107,7 @@
 		phy-handle = <&ethphy0>;
 	};
 };
+
+&usb0 {
+	dependencies = <&usb_power>;
+};
-- 
2.1.0

  parent reply	other threads:[~2015-08-26 12:28 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-26 12:28 [PATCH 00/16] deps: deterministic driver initialization order Alexander Holler
2015-08-26 12:28 ` [PATCH 01/16] deps: dtc: Automatically add new property 'dependencies' which contains a list of referenced phandles Alexander Holler
2015-08-26 12:28 ` [PATCH 02/16] deps: dtc: Add option to print initialization order Alexander Holler
2015-08-26 12:28 ` [PATCH 03/16] deps: dtc: Add option to print dependency graph as dot (Graphviz) Alexander Holler
2015-08-26 12:28 ` [PATCH 04/16] deps: dtc: introduce new (virtual) property no-dependencies Alexander Holler
2015-08-26 12:28 ` [PATCH 05/16] deps: introduce initcalls annotated with a struct device_driver Alexander Holler
2015-08-26 12:28 ` [PATCH 06/16] deps: deterministic driver initialization sequence based on dependencies from the DT Alexander Holler
2015-08-26 12:28 ` [PATCH 07/16] deps: add debug configuration options Alexander Holler
2015-08-26 12:28 ` Alexander Holler [this message]
2015-08-26 12:28 ` [PATCH 09/16] deps: dts: imx6q: make some remote-endpoints non-dependencies Alexander Holler
2015-08-26 12:28 ` [PATCH 10/16] deps: dts: omap: beagle: " Alexander Holler
2015-08-26 12:28 ` [PATCH 11/16] deps: WIP: generic: annotate some initcalls Alexander Holler
2015-08-26 12:28 ` [PATCH 12/16] deps: WIP: imx: " Alexander Holler
2015-08-26 12:28 ` [PATCH 13/16] deps: WIP: omap: " Alexander Holler
2015-08-26 12:28 ` [PATCH 14/16] deps: WIP: kirkwood: " Alexander Holler
2015-08-26 12:28 ` [PATCH 15/16] mtd: mtdcore: fix initcall level Alexander Holler
2015-09-01 21:19   ` Brian Norris
2015-09-02  5:34     ` Alexander Holler
2015-09-04  4:00       ` Alexander Holler
2015-09-08 19:36         ` Alexander Holler
2015-08-26 12:28 ` [PATCH 16/16] phy: phy-core: " Alexander Holler
2015-09-18  6:16   ` Kishon Vijay Abraham I
2015-09-18  6:59     ` Alexander Holler
2015-08-27 19:01 ` [PATCH 00/16] deps: deterministic driver initialization order Alexander Holler
2015-08-27 19:15   ` Alexander Holler

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