Re: [PATCH] staging: panel: remove duplicate code
From: Dan Carpenter
Date: Tue Apr 07 2015 - 04:49:59 EST
On Tue, Apr 07, 2015 at 01:55:01PM +0530, Sudip Mukherjee wrote:
> both the misc_deregister(), parport_release() and
> parport_unregister_device() is there in the module_exit function also.
> detach is called from parport_unregister_driver() and by the time
> detach executes misc_deregister(), parport_release() and
> parport_unregister_device() has already executed marking
> keypad_initialized and lcd.initialized as false. so this part of the
> code will never execute.
>
> Signed-off-by: Sudip Mukherjee <sudip@xxxxxxxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
A better subject might have been "remove dead code" but that was
explained pretty well in the patch desription.
I hadn't looked at this driver much before. It sucks that
parport_driver ->attach() functions can't fail... I think we don't
need the "keypad_initialized" and "lcd.initialized" variables because
"if (pprt)" is enough to tell us whether or not the attach function
succeeded.
TODO: Staging: panel: remove some redundent variables.
regards,
dan carpenter
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/