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From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: "Wang, Annie" <Annie.Wang@amd.com>,
	Vinod Koul <vinod.koul@intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
	"dmaengine@vger.kernel.org" <dmaengine@vger.kernel.org>,
	Borislav Petkov <bp@alien8.de>, "Huang, Ray" <Ray.Huang@amd.com>,
	"Wan, Vincent" <Vincent.Wan@amd.com>,
	"Xue, Ken" <Ken.Xue@amd.com>, Robin Murphy <robin.murphy@arm.com>,
	Graeme Gregory <gg@slimlogic.co.uk>, "Li, Tony" <Tony.Li@amd.com>,
	"Yu, Xiangliang" <Xiangliang.Yu@amd.com>
Subject: Re: [PATCH 3/6] ACPI: add 2 parameters to function acpi dma controller register
Date: Thu, 7 Jan 2016 12:08:50 +0200	[thread overview]
Message-ID: <CAHp75Vd6mWOy4qZk0uqHeurA5Mk4xX1qSSTa-fbWobCSpUo6zw@mail.gmail.com> (raw)
In-Reply-To: <20160107095238.GY1770@lahna.fi.intel.com>

On Thu, Jan 7, 2016 at 11:52 AM, Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
> On Wed, Jan 06, 2016 at 06:46:37AM +0000, Wang, Annie wrote:
>> Acpi_dma_xlate  mainly converts an  acpi_dma  structure into a dma_chan structure.
>> Without proper request line, wrong acpi_dma structure may be get.
>>
>> And as Andy says in http://article.gmane.org/gmane.linux.kernel.iommu/11675
>> How about add a hook into acpi_dma_controller_register?
>
> Hmm, you can pass custom data in acpi_dma_controller_register() which
> will be assigned to adma->data. If you put your request line
> information there, I think your custom acpi_dma_xlate() should be able
> to use that information to find proper channel, no?

I like Mika's idea, so, please, go this way if there is no impediment.

-- 
With Best Regards,
Andy Shevchenko

  reply	other threads:[~2016-01-07 10:08 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-04  5:31 [PATCH 0/6] 8250: AMD Carrizo UART PL300 DMA enablement Wang Hongcheng
2016-01-04  5:31 ` Wang Hongcheng
2016-01-04  5:31 ` [PATCH 1/6] 8250/Kconfig: add config option CONFIG_SERIAL_8250_AMD Wang Hongcheng
2016-01-04  5:31   ` Wang Hongcheng
2016-01-04 14:41   ` Borislav Petkov
2016-01-06  2:08     ` Wang, Annie
2016-01-06  2:08       ` Wang, Annie
2016-01-06 10:46       ` Borislav Petkov
2016-01-11  7:26         ` Wang, Annie
2016-01-11  7:26           ` Wang, Annie
2016-01-11  7:26           ` Wang, Annie
2016-01-04  5:31 ` [PATCH 2/6] ACPI: create setup_quirk in acpi_apd Wang Hongcheng
2016-01-04  5:31   ` Wang Hongcheng
2016-01-04 14:21   ` Andy Shevchenko
2016-01-04  5:31 ` [PATCH 3/6] ACPI: add 2 parameters to function acpi dma controller register Wang Hongcheng
2016-01-04  5:31   ` Wang Hongcheng
2016-01-04 14:36   ` Andy Shevchenko
2016-01-04 14:45   ` Mika Westerberg
2016-01-06  6:46     ` Wang, Annie
2016-01-07  9:52       ` Mika Westerberg
2016-01-07 10:08         ` Andy Shevchenko [this message]
2016-01-04  5:31 ` [PATCH 4/6] dmaengine: pl330: add new items for pl330 private data Wang Hongcheng
2016-01-04  5:31   ` Wang Hongcheng
2016-01-04  5:43   ` kbuild test robot
2016-01-04  5:43     ` kbuild test robot
2016-01-04 14:38   ` Andy Shevchenko
2016-01-04  5:31 ` [PATCH 5/6] dmaengine: pl330: provide ACPI dmaengine interface Wang Hongcheng
2016-01-04  5:31   ` Wang Hongcheng
2016-01-04 14:46   ` Andy Shevchenko
2016-01-04  5:31 ` [PATCH 6/6] Serial:8250: New Port Type PORT_AMD_8250 Wang Hongcheng
2016-01-04  5:31   ` Wang Hongcheng
2016-01-04  5:47   ` kbuild test robot
2016-01-04  5:47     ` kbuild test robot
2016-01-05 12:01   ` Heikki Krogerus
2016-01-14  6:23     ` Wang, Annie

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