lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 13 Aug 2015 11:27:46 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH 2/5] net: rfkill: add rfkill_find_type function

On Wed, 2015-08-05 at 16:39 +0300, Heikki Krogerus wrote:
> 
> +static const char *rfkill_types[NUM_RFKILL_TYPES] = {
> +	[RFKILL_TYPE_WLAN]	= "wlan",
> +	[RFKILL_TYPE_BLUETOOTH]	= "bluetooth",
> +	[RFKILL_TYPE_UWB]	= "ultrawideband",
> +	[RFKILL_TYPE_WIMAX]	= "wimax",
> +	[RFKILL_TYPE_WWAN]	= "wwan",
> +	[RFKILL_TYPE_GPS]	= "gps",
> +	[RFKILL_TYPE_FM]	= "fm",
> +	[RFKILL_TYPE_NFC]	= "nfc",
> +};
> +
> +enum rfkill_type rfkill_find_type(const char *name)
> +{
> +	int i;
> +
> +	BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_NFC + 1);
> 
That BUILD_BUG_ON() is now less useful - previously it pointed to the
code that needed to change, now you're left wondering if you don't look
up since it isn't quite that obvious from the code what this does.

Something like

	BUILD_BUG_ON(rfkill_types[NUM_RFKILL_TYPES - 1] == NULL);

would be better. As we only add here, that would be safe enough - I've
done something similar in the past that a bit more complicated.

With that and the static inline fixed (which maybe you could even
remove) I'm fine with all these rfkill patches, but I'm not sure how to
merge them since they affect all kinds of other trees. If desired, I
can apply them, but an ACK from the tegra maintainer would be good :)

johannes
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists