linux-kernel - Re: [PATCH 1/1] iio: fix config watermark initial value

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Date:	Thu, 16 Jun 2016 17:16:17 +0100
From:	Jonathan Cameron <jic23@...23.retrosnub.co.uk>
To:	Daniel Baluta <daniel.baluta@...il.com>,
	Jonathan Cameron <jic23@...nel.org>, laurentiu.palcu@...el.com
CC:	Lars-Peter Clausen <lars@...afoo.de>,
	Irina Tirdea <irina.tirdea@...el.com>,
	"linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Hartmut Knaack <knaack.h@....de>,
	Peter Meerwald <pmeerw@...erw.net>,
	Octavian Purdila <octavian.purdila@...el.com>
Subject: Re: [PATCH 1/1] iio: fix config watermark initial value



On 16 June 2016 12:56:11 BST, Daniel Baluta <daniel.baluta@...il.com> wrote:
>On Mon, Mar 28, 2016 at 1:02 PM, Jonathan Cameron <jic23@...nel.org>
>wrote:
>> On 24/03/16 09:23, Lars-Peter Clausen wrote:
>>> On 03/24/2016 10:09 AM, Irina Tirdea wrote:
>>>> config structure is set to 0 when updating the buffers, so by
>>>> default config->watermark will be 0. When computing the minimum
>>>> between config->watermark and the buffer->watermark or
>>>> insert_buffer-watermark, this will always be 0 regardless of the
>>>> value set by the user for the buffer.
>>>>
>>>> Set as initial value for config->watermark the maximum allowed
>>>> value so that the minimum value will always be set from one of the
>>>> buffers.
>>>>
>>>> Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
>>>
>>> Looks good. This bug was my fault, sorry.
>>>
>>> Fixes: f0566c0c405d ("iio: Set device watermark based on watermark
>of all
>>> attached buffers")
>> Applied to the fixes-togreg-post-rc1 branch of iio.git and marked for
>stable.
>>
>> Thanks,
>>
>> Jonathan
>>>
>>>> ---
>>>>  drivers/iio/industrialio-buffer.c | 1 +
>>>>  1 file changed, 1 insertion(+)
>>>>
>>>> diff --git a/drivers/iio/industrialio-buffer.c
>b/drivers/iio/industrialio-buffer.c
>>>> index b976332..90462fc 100644
>>>> --- a/drivers/iio/industrialio-buffer.c
>>>> +++ b/drivers/iio/industrialio-buffer.c
>>>> @@ -653,6 +653,7 @@ static int iio_verify_update(struct iio_dev
>*indio_dev,
>>>>      unsigned int modes;
>>>>
>>>>      memset(config, 0, sizeof(*config));
>>>> +    config->watermark = ~0;
>>>>
>>>>      /*
>>>>       * If there is just one buffer and we are removing it there is
>nothing
>>>>
>>>
>>
>> --
>
>
>Hi Jonathan,
>
>After a discussion with Laurentiu (Cc'ed), we noticed that this patch
>is not in the latest IIO (testing, togreg) tree.
>
>What is the path of an IIO fixes patch?
>
>thanks,
>Daniel.
Should be fixes-togreg then staging-linus then mainline.

I probably messed up. Will check.

Jonathan

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