From: Ian Abbott <abbotti@mev.co.uk>
To: Chase Southwood <chase.southwood@yahoo.com>, gregkh@linuxfoundation.org
Cc: hsweeten@visionengravers.com, devel@driverdev.osuosl.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 1/2] Staging: comedi: convert while loops to timeouts in s626.c
Date: Tue, 11 Mar 2014 14:26:32 +0000 [thread overview]
Message-ID: <531F1D18.4060109@mev.co.uk> (raw)
In-Reply-To: <1394337654-27379-1-git-send-email-chase.southwood@yahoo.com>
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@yahoo.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@mev.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
--
-=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@mev.co.uk> )=-
-=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
next prev parent reply other threads:[~2014-03-11 14:26 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-28 7:35 [PATCH] Staging: comedi: add timeouts to while loops " Chase Southwood
2014-02-28 17:18 ` Ian Abbott
2014-03-01 5:48 ` Chase Southwood
2014-03-02 4:13 ` Chase Southwood
2014-03-03 14:13 ` Ian Abbott
2014-03-04 4:06 ` Chase Southwood
2014-03-03 14:05 ` Ian Abbott
2014-03-04 8:43 ` [PATCH v2 1/2] Staging: comedi: convert while loops to timeouts " Chase Southwood
2014-03-05 12:09 ` Ian Abbott
2014-03-06 8:13 ` Chase Southwood
2014-03-08 1:43 ` [PATCH v3 1/2] Staging: comedi: convert while loops to timeouts in Chase Southwood
2014-03-09 3:00 ` Greg KH
2014-03-09 3:55 ` Chase Southwood
2014-03-09 4:00 ` [PATCH v3 1/2] Staging: comedi: convert while loops to timeouts in s626.c Chase Southwood
2014-03-11 14:26 ` Ian Abbott [this message]
2014-03-15 1:43 ` Chase Southwood
2014-03-15 5:26 ` gregkh
2014-03-15 7:18 ` Chase Southwood
2014-03-08 1:43 ` [PATCH v3 2/2] Staging: comedi: propagate timeout errors " Chase Southwood
2014-03-11 14:27 ` Ian Abbott
2014-03-04 8:44 ` [PATCH v2 " Chase Southwood
2014-03-05 12:11 ` Ian Abbott
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