From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
Cc: jroedel-l3A5Bk7waGM@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org,
Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org,
dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [RFC PATCH v2 6/7] arm: call iommu_init before of_platform_populate
Date: Tue, 02 Sep 2014 20:13:46 +0200 [thread overview]
Message-ID: <6406734.5D2q2gd403@wuerfel> (raw)
In-Reply-To: <1409680587-29818-7-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
On Tuesday 02 September 2014 18:56:26 Will Deacon wrote:
> @@ -803,9 +804,11 @@ static int __init customize_machine(void)
> if (machine_desc->init_machine)
> machine_desc->init_machine();
> #ifdef CONFIG_OF
> - else
> + else {
> + of_iommu_init();
> of_platform_populate(NULL, of_default_bus_match_table,
> NULL, NULL);
> + }
> #endif
> return 0;
> }
I think it would be better to not have this depend on the presence
of an init_machine callback. Why not move of_iommu_init() in front
of the if()? It shouldn't do anything unless we have an iommu
driver that we should be using.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v2 6/7] arm: call iommu_init before of_platform_populate
Date: Tue, 02 Sep 2014 20:13:46 +0200 [thread overview]
Message-ID: <6406734.5D2q2gd403@wuerfel> (raw)
In-Reply-To: <1409680587-29818-7-git-send-email-will.deacon@arm.com>
On Tuesday 02 September 2014 18:56:26 Will Deacon wrote:
> @@ -803,9 +804,11 @@ static int __init customize_machine(void)
> if (machine_desc->init_machine)
> machine_desc->init_machine();
> #ifdef CONFIG_OF
> - else
> + else {
> + of_iommu_init();
> of_platform_populate(NULL, of_default_bus_match_table,
> NULL, NULL);
> + }
> #endif
> return 0;
> }
I think it would be better to not have this depend on the presence
of an init_machine callback. Why not move of_iommu_init() in front
of the if()? It shouldn't do anything unless we have an iommu
driver that we should be using.
Arnd
next prev parent reply other threads:[~2014-09-02 18:13 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-02 17:56 [RFC PATCH v2 0/7] Introduce automatic DMA configuration for IOMMU masters Will Deacon
2014-09-02 17:56 ` Will Deacon
[not found] ` <1409680587-29818-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-02 17:56 ` [RFC PATCH v2 1/7] iommu: provide early initialisation hook for IOMMU drivers Will Deacon
2014-09-02 17:56 ` Will Deacon
[not found] ` <1409680587-29818-2-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-10 11:29 ` Marek Szyprowski
2014-09-10 11:29 ` Marek Szyprowski
2014-09-02 17:56 ` [RFC PATCH v2 2/7] dma-mapping: replace set_arch_dma_coherent_ops with arch_setup_dma_ops Will Deacon
2014-09-02 17:56 ` Will Deacon
2014-09-05 15:37 ` Grygorii Strashko
2014-09-05 15:37 ` Grygorii Strashko
[not found] ` <5409D8C5.9010804-l0cyMroinI0@public.gmane.org>
2014-09-08 10:31 ` Will Deacon
2014-09-08 10:31 ` Will Deacon
[not found] ` <20140908103129.GC26030-5wv7dgnIgG8@public.gmane.org>
2014-09-09 14:15 ` Grygorii Strashko
2014-09-09 14:15 ` Grygorii Strashko
2014-09-02 17:56 ` [RFC PATCH v2 3/7] iommu: add new iommu_ops callback for adding an OF device Will Deacon
2014-09-02 17:56 ` Will Deacon
[not found] ` <1409680587-29818-4-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-10 11:16 ` Marek Szyprowski
2014-09-10 11:16 ` Marek Szyprowski
[not found] ` <541032F6.1090809-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2014-09-10 11:22 ` Will Deacon
2014-09-10 11:22 ` Will Deacon
[not found] ` <20140910112213.GH28488-5wv7dgnIgG8@public.gmane.org>
2014-09-10 11:33 ` Will Deacon
2014-09-10 11:33 ` Will Deacon
2014-09-02 17:56 ` [RFC PATCH v2 4/7] iommu: provide helper function to configure an IOMMU for an of master Will Deacon
2014-09-02 17:56 ` Will Deacon
[not found] ` <1409680587-29818-5-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-02 19:10 ` Arnd Bergmann
2014-09-02 19:10 ` Arnd Bergmann
2014-09-04 11:26 ` Will Deacon
2014-09-04 11:26 ` Will Deacon
2014-09-04 11:59 ` Arnd Bergmann
2014-09-04 11:59 ` Arnd Bergmann
2014-09-04 12:28 ` Will Deacon
2014-09-04 12:28 ` Will Deacon
2014-09-10 13:01 ` Laurent Pinchart
2014-09-10 13:01 ` Laurent Pinchart
2014-09-10 13:06 ` Will Deacon
2014-09-10 13:06 ` Will Deacon
2014-09-02 17:56 ` [RFC PATCH v2 5/7] dma-mapping: detect and configure IOMMU in of_dma_configure Will Deacon
2014-09-02 17:56 ` Will Deacon
2014-09-02 17:56 ` [RFC PATCH v2 6/7] arm: call iommu_init before of_platform_populate Will Deacon
2014-09-02 17:56 ` Will Deacon
[not found] ` <1409680587-29818-7-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-02 18:13 ` Arnd Bergmann [this message]
2014-09-02 18:13 ` Arnd Bergmann
2014-09-02 17:56 ` [RFC PATCH v2 7/7] arm: dma-mapping: plumb our iommu mapping ops into arch_setup_dma_ops Will Deacon
2014-09-02 17:56 ` Will Deacon
[not found] ` <1409680587-29818-8-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-02 18:14 ` Arnd Bergmann
2014-09-02 18:14 ` Arnd Bergmann
2014-09-02 19:11 ` [RFC PATCH v2 0/7] Introduce automatic DMA configuration for IOMMU masters Arnd Bergmann
2014-09-02 19:11 ` Arnd Bergmann
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