RE: [PATCH v2] zd1211rw: replace ZD_ASSERT with lockdep_assert_held()

From: Sharma, Sanjeev
Date: Thu Sep 11 2014 - 06:36:49 EST


-----Original Message-----
From: Johannes Berg [mailto:johannes@xxxxxxxxxxxxxxxx]
Sent: Thursday, September 11, 2014 3:42 PM
To: Sharma, Sanjeev
Cc: dsd@xxxxxxxxxx; kune@xxxxxxxxxxxxxx; linux-wireless@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx
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@xxxxxxxxxx>
> ---
> 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.

I didn't understand where I put wrong logic ?

Regards
Sanjeev Sharma