4 files changed, 28 insertions, 2 deletions

diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 1feb9551ef8f..7126506611c1 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -30,6 +30,7 @@
 #include <linux/vmalloc.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
+#include <linux/wl12xx.h>
 
 #include "wl12xx.h"
 #include "wl12xx_80211.h"
@@ -719,6 +720,13 @@ irqreturn_t wl1271_irq(int irq, void *cookie)
         set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
         cancel_work_sync(&wl->tx_work);
 
+        /*
+         * In case edge triggered interrupt must be used, we cannot iterate
+         * more than once without introducing race conditions with the hardirq.
+         */
+        if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
+                loopcount = 1;
+
         mutex_lock(&wl->mutex);
 
         wl1271_debug(DEBUG_IRQ, "IRQ work");
@@ -3648,6 +3656,7 @@ struct ieee80211_hw *wl1271_alloc_hw(void)
         wl->ap_ps_map = 0;
         wl->ap_fw_ps_map = 0;
         wl->quirks = 0;
+        wl->platform_quirks = 0;
 
         memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c
index 8246e9de4306..bcd4ad7ba90d 100644
--- a/drivers/net/wireless/wl12xx/sdio.c
+++ b/drivers/net/wireless/wl12xx/sdio.c
@@ -220,6 +220,7 @@ static int __devinit wl1271_probe(struct sdio_func *func,
         struct ieee80211_hw *hw;
         const struct wl12xx_platform_data *wlan_data;
         struct wl1271 *wl;
+        unsigned long irqflags;
         int ret;
 
         /* We are only able to handle the wlan function */
@@ -251,9 +252,15 @@ static int __devinit wl1271_probe(struct sdio_func *func,
         wl->irq = wlan_data->irq;
         wl->ref_clock = wlan_data->board_ref_clock;
         wl->tcxo_clock = wlan_data->board_tcxo_clock;
+        wl->platform_quirks = wlan_data->platform_quirks;
+
+        if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
+                irqflags = IRQF_TRIGGER_RISING;
+        else
+                irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
 
         ret = request_threaded_irq(wl->irq, wl1271_hardirq, wl1271_irq,
-                                   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+                                   irqflags,
                                    DRIVER_NAME, wl);
         if (ret < 0) {
                 wl1271_error("request_irq() failed: %d", ret);
diff --git a/drivers/net/wireless/wl12xx/spi.c b/drivers/net/wireless/wl12xx/spi.c
index 7b82b5f0e490..51662bb68019 100644
--- a/drivers/net/wireless/wl12xx/spi.c
+++ b/drivers/net/wireless/wl12xx/spi.c
@@ -364,6 +364,7 @@ static int __devinit wl1271_probe(struct spi_device *spi)
         struct wl12xx_platform_data *pdata;
         struct ieee80211_hw *hw;
         struct wl1271 *wl;
+        unsigned long irqflags;
         int ret;
 
         pdata = spi->dev.platform_data;
@@ -402,6 +403,12 @@ static int __devinit wl1271_probe(struct spi_device *spi)
 
         wl->ref_clock = pdata->board_ref_clock;
         wl->tcxo_clock = pdata->board_tcxo_clock;
+        wl->platform_quirks = pdata->platform_quirks;
+
+        if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
+                irqflags = IRQF_TRIGGER_RISING;
+        else
+                irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
 
         wl->irq = spi->irq;
         if (wl->irq < 0) {
@@ -411,7 +418,7 @@ static int __devinit wl1271_probe(struct spi_device *spi)
         }
 
         ret = request_threaded_irq(wl->irq, wl1271_hardirq, wl1271_irq,
-                                   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+                                   irqflags,
                                    DRIVER_NAME, wl);
         if (ret < 0) {
                 wl1271_error("request_irq() failed: %d", ret);
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index 9ccbcfdd0802..fb2b79fa42b4 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -579,6 +579,9 @@ struct wl1271 {
 
         /* Quirks of specific hardware revisions */
         unsigned int quirks;
+
+        /* Platform limitations */
+        unsigned int platform_quirks;
 };
 
 struct wl1271_station {