linux-kernel - Re: [PATCH v3 1/2] Staging: comedi: convert while loops to timeouts in s626.c

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Date:	Fri, 14 Mar 2014 18:43:37 -0700 (PDT)
From:	Chase Southwood <chase.southwood@...oo.com>
To:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Cc:	"hsweeten@...ionengravers.com" <hsweeten@...ionengravers.com>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ian Abbott <abbotti@....co.uk>
Subject: Re: [PATCH v3 1/2] Staging: comedi: convert while loops to timeouts in s626.c

>On Tuesday, March 11, 2014 9:26 AM, Ian Abbott <abbotti@....co.uk> wrote:

>>On 2014-03-09 04:00, Chase Southwood wrote:
>> This patch changes a handful of while loops to timeouts to prevent
>> infinite looping on hardware failure. A couple such loops are in a
>> function (s626_debi_transfer()) which is called from critical sections,
>> so comedi_timeout() is unusable for them, and an iterative timeout is
>> used instead. For the while loops in a context where comedi_timeout() is
>> allowed, a new callback function, s626_send_dac_eoc(), has been defined
>> to evaluate the conditions that the while loops are testing.  The new
>> callback employs a switch statement based on a simple new enum so that
>> it is usable for all of the different conditions tested in while loops
>> in s626_send_dac().  The proper comedi_timeout() calls are then used.
>>
>> Signed-off-by: Chase Southwood <chase.southwood@...oo.com>
>> ---
>> Ian, here is a version of this patchset employing the enum you recommended.
>> The second patch has been rebased on top of this one.
>>
>> 2: Used comedi_timeout() where appropriate, introduce callback function
>>
>> 3: Updated callback to switch on new enum.>
>
>Reviewed-by: Ian Abbott <abbotti@....co.uk>
>
>For future reference, for patches affecting a single comedi driver, we 
>usually title the patches like this:
>
>staging: comedi: name_of_driver: summary of patch
>


Hi Greg!

I was just writing to inquire whether you were able to add this patch as well as
PATCH 2/2 Propagate timeout errors in s626.c, to your queue in their current state.
I had to resend this patch to you about a week ago because the subject line got
a little messed up, which might have lead to a bit of confusion regarding the 2
patch series, and I wanted to check in to see whether you need me to do anything
further.

Thanks,
Chase
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