[PATCH 1/3] libertas: fix interrupt issue

[Dan Williams]

On Thu, 2008-06-05 at 13:06 +0200, Holger Schurig wrote:
> This helps against lost interrupts and aids in debugging this.
> 
> Signed-off-by: Holger Schurig <hs4233 at mail.mn-solutions.de>

Acked-by: Dan Williams <dcbw at redhat.com>

> Index: wireless-testing/drivers/net/wireless/libertas/if_cs.c
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/libertas/if_cs.c	2008-05-30 11:26:35.000000000 +0200
> +++ wireless-testing/drivers/net/wireless/libertas/if_cs.c	2008-05-30 11:30:09.000000000 +0200
> @@ -379,6 +379,8 @@ static irqreturn_t if_cs_interrupt(int i
>  
>  	/* Ask card interrupt cause register if there is something for us */
>  	cause = if_cs_read16(card, IF_CS_CARD_INT_CAUSE);
> +	lbs_deb_cs("cause 0x%04x\n", cause);
> +
>  	if (cause == 0) {
>  		/* Not for us */
>  		return IRQ_NONE;
> @@ -390,10 +392,6 @@ static irqreturn_t if_cs_interrupt(int i
>  		return IRQ_HANDLED;
>  	}
>  
> -	/* Clear interrupt cause */
> -	if_cs_write16(card, IF_CS_CARD_INT_CAUSE, cause & IF_CS_BIT_MASK);
> -	lbs_deb_cs("cause 0x%04x\n", cause);
> -
>  	if (cause & IF_CS_BIT_RX) {
>  		struct sk_buff *skb;
>  		lbs_deb_cs("rx packet\n");
> @@ -434,6 +432,9 @@ static irqreturn_t if_cs_interrupt(int i
>  		lbs_queue_event(priv, event >> 8 & 0xff);
>  	}
>  
> +	/* Clear interrupt cause */
> +	if_cs_write16(card, IF_CS_CARD_INT_CAUSE, cause & IF_CS_BIT_MASK);
> +
>  	lbs_deb_leave(LBS_DEB_CS);
>  	return IRQ_HANDLED;
>  }
> --
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