wl1271: Implement looped IRQ handling

This patch implements looped IRQ handling. In essence, if a new interrupt is
asserted by the FW while the host is processing the previous one, the host
will directly proceed processing the new IRQ without leaving the handling
function.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c
index 7d7c85041859..1f204db30c27 100644
--- a/drivers/net/wireless/wl12xx/wl1271_sdio.c
+++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c
@@ -75,7 +75,9 @@ static irqreturn_t wl1271_irq(int irq, void *cookie)
                 wl->elp_compl = NULL;
         }
 
-        ieee80211_queue_work(wl->hw, &wl->irq_work);
+        if (!test_and_set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
+                ieee80211_queue_work(wl->hw, &wl->irq_work);
+        set_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
         spin_unlock_irqrestore(&wl->wl_lock, flags);
 
         return IRQ_HANDLED;