linux-kernel - Re: [PATCH 0/5] Input: serio_raw - add monitor/replay debugging interface

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Message-ID: <CAGS+omDWrSyLtDYWAubyc5F=BUqKOnKmCnyWPn5nNcoREar_aw@mail.gmail.com>
Date:	Tue, 14 Feb 2012 11:18:38 +0800
From:	Daniel Kurtz <djkurtz@...gle.com>
To:	Che-Liang Chiou <clchiou@...omium.org>
Cc:	linux-kernel@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org
Subject: Re: [PATCH 0/5] Input: serio_raw - add monitor/replay debugging interface

On Wed, Feb 8, 2012 at 11:24 AM, Che-Liang Chiou <clchiou@...omium.org> wrote:
>
> The serio_raw driver is designed to provide "raw access" to mice, keyboards
> etc; thus, a driver accessing serio_raw may live entirely in userland.
>
> However, serio_raw lacks testability.  It is practically impossible to do
> regression tests on changes to a serio_raw -based userland driver.  On the other
> hand, the kernel's input subsystem has good testability support.  With the help
> of tools like utouch-evemu, we may capture and replay input events for evdev
> drivers in regression tests.
>
> This patchset contains extensions to the serio_raw driver which add debugfs
> entries for monitoring and replaying byte sequence between a userland driver
> and device.  These byte sequences can be used in regression tests of the
> userland driver.  This patchset closes the gap between serio_raw and the input
> subsystem regarding testability.
>
> This patchset is successfully applied on kernel version 3.3-rc2.
>
> Che-Liang Chiou (5):
>  Input: serio_raw - return proper result when serio_raw_read fails
>  Input: serio_raw - extract queue interface
>  Input: serio_raw - factor out common pattern of write
>  Input: serio_raw - add debugfs interface
>  Input: serio_raw - implement debugfs interface

For patches 3-5:
Reviewed-by: Daniel Kurtz <djkurtz@...gle.com>

For patch 1 (and its implication on queue_read() in patch 2, I'd
prefer to hear feedback from the list.

-Daniel

>
>  drivers/input/serio/serio_raw.c |  394 +++++++++++++++++++++++++++++++++------
>  1 files changed, 337 insertions(+), 57 deletions(-)
>
> --
> 1.7.7.3
>
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Daniel Kurtz | Software Engineer | djkurtz@...gle.com | 650.204.0722
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