linux-kernel - Re: [PATCH] OMAP: Keypad driver

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Message-Id: <20060722023935.aab52bd2.akpm@osdl.org>
Date:	Sat, 22 Jul 2006 02:39:35 -0700
From:	Andrew Morton <akpm@...l.org>
To:	"Komal Shah" <komal_shah802003@...oo.com>
Cc:	linux-input@...ey.karlin.mff.cuni.cz, dtor_core@...ritech.net,
	tony@...mide.com, ext-timo.teras@...ia.com,
	juha.yrjola@...idboot.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] OMAP: Keypad driver

On Sat, 22 Jul 2006 01:26:14 -0700
"Komal Shah" <komal_shah802003@...oo.com> wrote:

> Please review the attached TI OMAP Keypad driver patch
> and consider it for -mm submission.

The code looks clean.

- Could use setup_timer().

- Check the return value from device_create_file() (and any and all such
  similar functions), handle failure appropriately.

- I don't think the tasklet stopping code is correct.  tasklet_disable()
  will prevent the callback from being called.  The del_timer_sync() will
  kill off the timer.  But the just-killed timer handler might have left
  the tasklet scheduled, and although it will not call the handler, the
  high-level tasklet code can still execute, and will then start playing
  with now-freed data.  A final tasklet_kill() should fix that up.

- Perhaps the probe function is requesting the IRQ too early?  The IRQ
  handler can perhaps be called while the hardware is still being set up. 

- Use INTF_TRIGGER_FALLING (etc), not the now-deprecated SA_TRIGGER_FALLING.

- The changelog needs work.  What's an OMAP? ;)

- Finally, by what authority does random_person@...oo.com submit Nokia
  and TI's code??  Please review Section 11 of
  Documentation/SubmittingPatches, seek and obtain signoffs from the other
  authors and then add your own, thanks.

-
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