wl1251: Fix regression in IRQ loop handling

In some cases, the IRQ loop handler could acknowledge an interrupt to
the chipset, but not service it.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Janne Ylalehto <janne.ylalehto@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c
index dad010d114f8..2e1c10f9670a 100644
--- a/drivers/net/wireless/wl12xx/wl1251_main.c
+++ b/drivers/net/wireless/wl12xx/wl1251_main.c
@@ -308,9 +308,11 @@ static void wl1251_irq_work(struct work_struct *work)
                         wl1251_debug(DEBUG_IRQ,
                                      "WL1251_ACX_INTR_INIT_COMPLETE");
 
-                intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
+                if (--ctr == 0)
+                        break;
 
-        } while (intr && --ctr);
+                intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
+        } while (intr);
 
 out_sleep:
         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));