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libertas: fix interrupt issue

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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>
This commit is contained in:
Holger Schurig
2008-06-05 13:06:15 +02:00
committed by John W. Linville
parent d2c3cc0070
commit 3073556171
1 changed files with 5 additions and 4 deletions
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9
drivers/net/wireless/libertas/if_cs.c
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@@ -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 */ /* Ask card interrupt cause register if there is something for us */
cause = if_cs_read16(card, IF_CS_CARD_INT_CAUSE); cause = if_cs_read16(card, IF_CS_CARD_INT_CAUSE);
lbs_deb_cs("cause 0x%04x\n", cause);
if (cause == 0) { if (cause == 0) {
/* Not for us */ /* Not for us */
return IRQ_NONE; return IRQ_NONE;
@@ -390,10 +392,6 @@ static irqreturn_t if_cs_interrupt(int irq, void *data)
return IRQ_HANDLED; 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) { if (cause & IF_CS_BIT_RX) {
struct sk_buff *skb; struct sk_buff *skb;
lbs_deb_cs("rx packet\n"); 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); 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); lbs_deb_leave(LBS_DEB_CS);
return IRQ_HANDLED; return IRQ_HANDLED;
} }