From 3073556171f1cf2044ff38c1fc3b9f6c805f0873 Mon Sep 17 00:00:00 2001
From: Holger Schurig <hs4233@mail.mn-solutions.de>
Date: Thu, 5 Jun 2008 13:06:15 +0200
Subject: [PATCH] libertas: fix interrupt issue
This helps against lost interrupts and aids in debugging this.
Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/libertas/if_cs.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c
index 873ab10a0786..b5d0cd4c411a 100644
--- a/drivers/net/wireless/libertas/if_cs.c
+++ b/drivers/net/wireless/libertas/if_cs.c
@@ -379,6 +379,8 @@ static irqreturn_t if_cs_interrupt(int irq, void *data)
/* 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 irq, void *data)
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 irq, void *data)
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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