linux-kernel - Re: [resend PATCH 1/3] ACPI / platform: provide default DMA mask

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Message-ID: <54465C0E.50801@intel.com>
Date:	Tue, 21 Oct 2014 16:13:50 +0300
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
CC:	Felipe Balbi <balbi@...com>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	linux-usb@...r.kernel.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [resend PATCH 1/3] ACPI / platform: provide default DMA mask

On 21/10/14 16:08, Rafael J. Wysocki wrote:
> On Tuesday, October 21, 2014 03:27:45 PM Adrian Hunter wrote:
>> On 24/09/14 16:49, Rafael J. Wysocki wrote:
>>> On Wednesday, September 24, 2014 11:00:37 AM Heikki Krogerus wrote:
>>>> Most devices are configured for 32-bit DMA addresses.
>>>> Setting the mask to 32-bit here removes the need for the
>>>> drivers to do it separately.
>>>>
>>>> Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
>>>> Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
>>>
>>> ACK
>>
>> Hi
>>
>> I need this for another driver.  Did this patch go anywhere?
> 
> It's not in 3.18-rc1 as far as I can say.
> 
>> Note Heikki is away at the moment.
> 
> That's OK.  I guess I can queue up this one for you.
> 
> When do you need this to get into the Linus' tree?

My patches are aiming for 3.19

> 
> 
>>>> ---
>>>>  drivers/acpi/acpi_platform.c | 2 ++
>>>>  1 file changed, 2 insertions(+)
>>>>
>>>> diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
>>>> index 2bf9082..8d099e6 100644
>>>> --- a/drivers/acpi/acpi_platform.c
>>>> +++ b/drivers/acpi/acpi_platform.c
>>>> @@ -16,6 +16,7 @@
>>>>  #include <linux/err.h>
>>>>  #include <linux/kernel.h>
>>>>  #include <linux/module.h>
>>>> +#include <linux/dma-mapping.h>
>>>>  #include <linux/platform_device.h>
>>>>  
>>>>  #include "internal.h"
>>>> @@ -102,6 +103,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev)
>>>>  	pdevinfo.res = resources;
>>>>  	pdevinfo.num_res = count;
>>>>  	pdevinfo.acpi_node.companion = adev;
>>>> +	pdevinfo.dma_mask = DMA_BIT_MASK(32);
>>>>  	pdev = platform_device_register_full(&pdevinfo);
>>>>  	if (IS_ERR(pdev))
>>>>  		dev_err(&adev->dev, "platform device creation failed: %ld\n",
>>>>
>>>
>>
> 

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