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libertas: fix GSPI card event handling

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The GPSI interface driver does not re-enable the Card Event Interrupt, which
causes problems after a card event (for example: link-loss) comes in.  This
can lead, for example, to the card failing to re-associate.  This patch
ensures that we re-enable the Card Event Interrupt when we handle card events.

Signed-off-by: Andrey Yurovsky <andrey@cozybit.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
andrey@cozybit.com 2009-05-19 17:20:13 -07:00 committed by John W. Linville
parent 4ef699fb77
commit ea2d06395b
1 changed files with 7 additions and 0 deletions
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7
drivers/net/wireless/libertas/if_spi.c
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@ -814,6 +814,13 @@ static void if_spi_e2h(struct if_spi_card *card)
if (err)
goto out;
/* re-enable the card event interrupt */
spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG,
~IF_SPI_HICU_CARD_EVENT);
/* generate a card interrupt */
spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG, IF_SPI_CIC_HOST_EVENT);
spin_lock_irqsave(&priv->driver_lock, flags);
lbs_queue_event(priv, cause & 0xff);
spin_unlock_irqrestore(&priv->driver_lock, flags);