linux-kernel - Re: [PATCH] Enable Dell All-In-One volume up/down keys

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Message-ID: <1297968249.2234.60.camel@lenovo>
Date:	Thu, 17 Feb 2011 18:44:09 +0000
From:	Colin Ian King <colin.king@...onical.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	platform-driver-x86@...r.kernel.org,
	Matthew Garrett <mjg59@...f.ucam.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Enable Dell All-In-One volume up/down keys

On Thu, 2011-02-17 at 09:21 -0800, Dmitry Torokhov wrote:
> On Thu, Feb 17, 2011 at 11:10:11AM +0000, Colin Ian King wrote:
> > Thanks for your feedback Dmitry,
> > 
[ snip ]
> Looks much better, but I just noticed that we are missing calls to
> sparse_keymap_free(dell_wmi_aio_input_dev) in both probe error handling
> path and in remove method (they shoudl be called before unregistering
> the device).
> 
Indeed. Thanks for spotting that.  I've also incorporated your
suggestions below too.  Much appreciated.

Attached is the re-worked patch.

Colin

> Also, can we have probe routine more streamlined, like this:
> 
> static int __init dell_wmi_aio_init(void)
> {
> 	int err;
> 	char *guid;
> 
> 	guid = dell_wmi_aio_find();
> 	if (!guid) {
> 		pr_error("No known WMI GUID found\n");
> 		return -ENXIO;
> 	}
> 
> 	err = dell_wmi_aio_input_setup();
> 	if (err)
> 		return err;
> 
> 	err = wmi_install_notify_handler(guid, dell_wmi_aio_notify, NULL);
> 	if (err) {
> 		pr_err("Unable to register notify handler - %d\n", err);
> 		sparse_keymap_free(dell_wmi_aio_input_dev);
> 		input_unregister_device(dell_wmi_aio_input_dev);
> 		return err;
> 	}
> 
> 	return 0;
> }
> 
> Thanks.
> 


View attachment "0001-Enable-Dell-All-In-One-volume-up-down-keys.patch" of type "text/x-patch" (6928 bytes)