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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 10/21] soc: imx: gpcv2: fix regulator deferred probe
Date: Thu, 10 Jan 2019 08:37:14 +0100	[thread overview]
Message-ID: <20190110073714.effcrzo3b32hyydc@pengutronix.de> (raw)
In-Reply-To: <20190109071210.18896-11-andrew.smirnov@gmail.com>

On Tue, Jan 08, 2019 at 11:11:59PM -0800, Andrey Smirnov wrote:
> Port of a Linux commit 9e01e2d56db23485a75864b6aeee8e443f024ddb
> 
>   If a regulator requests a deferred probe, the power domain gets
>   initialized twice. This leads to a list double add (without
>   list debugging the kernel hangs due to the double add later):
> 
>     WARNING: CPU: 0 PID: 19 at lib/list_debug.c:31 __list_add_valid+0xbc/0xc4
>     list_add double add: new=c1229754, prev=c12383b4, next=c1229754.
> 
>   Initialize the power domain after we get the regulator. Also do
>   not print an error in case the regulator defers probing.
> 
>   Cc: Fabio Estevam <fabio.estevam@nxp.com>
>   Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
>   Cc: linux-arm-kernel@lists.infradead.org
>   Cc: linux-kernel@vger.kernel.org
>   Fixes: 03aa12629fc4 ("soc: imx: Add GPCv2 power gating driver")
>   Signed-off-by: Stefan Agner <stefan@agner.ch>
>   Acked-by: Andrey Smirnov <andrew.smirnov@gmail.com>
>   Tested-by: Andrey Smirnov <andrew.smirnov@gmail.com>
>   Signed-off-by: Shawn Guo <shawnguo@kernel.org>
> 
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> ---
>  drivers/soc/imx/gpcv2.c | 15 ++++++++-------
>  1 file changed, 8 insertions(+), 7 deletions(-)

This file has been added in the last patch. Please squash this patch and
the next one into it.

Sascha

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  reply	other threads:[~2019-01-10  7:37 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-09  7:11 [PATCH 00/21] PCIe support for i.MX7 Andrey Smirnov
2019-01-09  7:11 ` [PATCH 01/21] regulator: Convert drivers to use struct regulator_desc Andrey Smirnov
2019-01-09  7:11 ` [PATCH 02/21] regulator: Port basic regmap regulator functions Andrey Smirnov
2019-01-09  7:11 ` [PATCH 03/21] regulator: Add support for setting regulator's voltage Andrey Smirnov
2019-01-09  7:11 ` [PATCH 04/21] base: driver: Drop redundant list_empty() check Andrey Smirnov
2019-01-09  7:11 ` [PATCH 05/21] base: Port driver_deferred_probe_check_state() from Linux Andrey Smirnov
2019-01-09  7:11 ` [PATCH 06/21] regulator: Add primitive support for deferred probe Andrey Smirnov
2019-01-09  7:11 ` [PATCH 07/21] regulator: Port ANATOP driver from Linux Andrey Smirnov
2019-01-09  7:11 ` [PATCH 08/21] drivers: base: Port power management code " Andrey Smirnov
2019-01-09  7:11 ` [PATCH 09/21] soc: imx: Add GPCv2 power gating driver Andrey Smirnov
2019-01-09  7:11 ` [PATCH 10/21] soc: imx: gpcv2: fix regulator deferred probe Andrey Smirnov
2019-01-10  7:37   ` Sascha Hauer [this message]
2019-01-10 19:20     ` Andrey Smirnov
2019-01-09  7:12 ` [PATCH 11/21] soc: imx: gpcv2: correct PGC offset Andrey Smirnov
2019-01-09  7:12 ` [PATCH 12/21] reset: Add i.MX7 SRC reset driver Andrey Smirnov
2019-01-09  7:12 ` [PATCH 13/21] reset: imx7: Fix always writing bits as 0 Andrey Smirnov
2019-01-10  7:38   ` Sascha Hauer
2019-01-09  7:12 ` [PATCH 14/21] reset: Mark local functions as static Andrey Smirnov
2019-01-09  7:12 ` [PATCH 15/21] PCI: imx6: Add code to support i.MX7D Andrey Smirnov
2019-01-09  7:12 ` [PATCH 16/21] PCI: imx6: Allow probe deferral by reset GPIO Andrey Smirnov
2019-01-10  8:05   ` Sascha Hauer
2019-01-12  4:24     ` Andrey Smirnov
2019-01-09  7:12 ` [PATCH 17/21] PCI: imx6: Do not wait for speed change on i.MX7 Andrey Smirnov
2019-01-09  7:12 ` [PATCH 18/21] PCI: imx6: Do not switch speed if Gen2 is disabled Andrey Smirnov
2019-01-09  7:12 ` [PATCH 19/21] PCI: imx6: Fix spelling mistake: "contol" -> "control" Andrey Smirnov
2019-01-09  7:12 ` [PATCH 20/21] PCI: imx6: Drop unnecessary root_bus_nr setting Andrey Smirnov
2019-01-09  7:12 ` [PATCH 21/21] PCI: imx6: Port imx6_pcie_ltssm_enable() Andrey Smirnov

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