linux-kernel - Re: [PATCH v2] zd1211rw: replace ZD_ASSERT with lockdep_assert

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Message-ID: <1410430345.22863.0.camel@jlt4.sipsolutions.net>
Date:	Thu, 11 Sep 2014 12:12:25 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Sanjeev Sharma <sanjeev_sharma@...tor.com>
Cc:	dsd@...too.org, kune@...ne-taler.de,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH v2] zd1211rw: replace ZD_ASSERT with
 lockdep_assert_held()

On Thu, 2014-09-11 at 15:39 +0530, Sanjeev Sharma wrote:
> on some architecture spin_is_locked() always return false in
> uniprocessor configuration and therefore it would be advise
> to replace with lockdep_assert_held().
> 
> Signed-off-by: Sanjeev Sharma <Sanjeev_Sharma@...tor.com>
> ---
> Changes in v2:
>   - corrected the typo

Now it compiles, but you got the logic wrong.

> +++ b/drivers/net/wireless/zd1211rw/zd_mac.c
> @@ -235,7 +235,7 @@ void zd_mac_clear(struct zd_mac *mac)
>  {
>  	flush_workqueue(zd_workqueue);
>  	zd_chip_clear(&mac->chip);
> -	ZD_ASSERT(!spin_is_locked(&mac->lock));
> +	lockdep_assert_held(&mac->lock);
>  	ZD_MEMCLEAR(mac, sizeof(struct zd_mac));
>  }

Look closely at this again.

johannes

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