[PATCH] libertas: before sleeping, check for a command result

[Johan Adolfsson]

> -----Original Message-----
> From: libertas-dev-bounces at lists.infradead.org 
> [mailto:libertas-dev-bounces at lists.infradead.org] On Behalf 
> Of Holger Schurig
> Sent: den 23 maj 2008 16:04
> To: libertas-dev at lists.infradead.org; Dan Williams; 
> linux-wireless at vger.kernel.org; John W. Linville
> Subject: [PATCH] libertas: before sleeping, check for a command result
> 
> 
> If we don't check for a command response early, but rather sleep,
> then we might sleep despite an already-received command response.
> This will lead to a command-timeout.
> 
> Signed-off-by: Holger Schurig <hs4233 at mail.mn-solutions.de>
> 
> Index: wireless-testing/drivers/net/wireless/libertas/main.c
> ===================================================================
> --- 
> wireless-testing.orig/drivers/net/wireless/libertas/main.c	
> 2008-05-23 14:25:16.000000000 +0200
> +++ wireless-testing/drivers/net/wireless/libertas/main.c	
> 2008-05-23 14:25:51.000000000 +0200
> @@ -722,14 +722,14 @@ static int lbs_thread(void *data)
>  			shouldsleep = 1;	/* Something is 
> en route to the device already */
>  		else if (priv->tx_pending_len > 0)
>  			shouldsleep = 0;	/* We've a 
> packet to send */
> +		else if (priv->resp_len[priv->resp_idx])
> +			shouldsleep = 0;	/* We have a 
> command response */
>  		else if (priv->cur_cmd)
>  			shouldsleep = 1;	/* Can't send a 
> command; one already running */
>  		else if (!list_empty(&priv->cmdpendingq))
>  			shouldsleep = 0;	/* We have a 
> command to send */
>  		else if (__kfifo_len(priv->event_fifo))
>  			shouldsleep = 0;	/* We have an 
> event to process */


Hi,
I have experience a couple of timeout and resends and after 
sending another commands I get the response from the previous one, 
and the patch seems to solve a couple of those for me - 
still se some problem fetching packet from  firmware with ret = -22 though.
And it could be dependant on how much debug I have turned on..

But, shouldn't the above priv->event_fifo check move before
cur_cmd  as well?

I have no clue what kind of events we are talking about here and
if those can be processed independent of if a cmd is running or not,
just trigged on the comment.

Best regards
/Johan