b43: bus: add helpers for checking host type

Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/bus.h

@@ -46,6 +46,17 @@ struct b43_bus_dev {
 	u8 core_rev;
 };
 
+static inline bool b43_bus_host_is_pcmcia(struct b43_bus_dev *dev)
+{
+	return (dev->bus_type == B43_BUS_SSB &&
+		dev->sdev->bus->bustype == SSB_BUSTYPE_PCMCIA);
+}
+static inline bool b43_bus_host_is_sdio(struct b43_bus_dev *dev)
+{
+	return (dev->bus_type == B43_BUS_SSB &&
+		dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO);
+}
+
 struct b43_bus_dev *b43_bus_dev_ssb_init(struct ssb_device *sdev);
 
 #endif /* B43_BUS_H_ */

drivers/net/wireless/b43/main.c

@@ -1645,7 +1645,7 @@ static void b43_beacon_update_trigger_work(struct work_struct *work)
 	mutex_lock(&wl->mutex);
 	dev = wl->current_dev;
 	if (likely(dev && (b43_status(dev) >= B43_STAT_INITIALIZED))) {
-		if (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) {
+		if (b43_bus_host_is_sdio(dev->dev)) {
 			/* wl->mutex is enough. */
 			b43_do_beacon_update_trigger_work(dev);
 			mmiowb();
@@ -3955,7 +3955,7 @@ static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
 
 	/* Disable interrupts on the device. */
 	b43_set_status(dev, B43_STAT_INITIALIZED);
-	if (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) {
+	if (b43_bus_host_is_sdio(dev->dev)) {
 		/* wl->mutex is locked. That is enough. */
 		b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, 0);
 		b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);	/* Flush */
@@ -3968,7 +3968,7 @@ static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
 	/* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */
 	orig_dev = dev;
 	mutex_unlock(&wl->mutex);
-	if (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) {
+	if (b43_bus_host_is_sdio(dev->dev)) {
 		b43_sdio_free_irq(dev);
 	} else {
 		synchronize_irq(dev->dev->irq);
@@ -4005,7 +4005,7 @@ static int b43_wireless_core_start(struct b43_wldev *dev)
 	B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
 
 	drain_txstatus_queue(dev);
-	if (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) {
+	if (b43_bus_host_is_sdio(dev->dev)) {
 		err = b43_sdio_request_irq(dev, b43_sdio_interrupt_handler);
 		if (err) {
 			b43err(dev->wl, "Cannot request SDIO IRQ\n");
@@ -4405,8 +4405,8 @@ static int b43_wireless_core_init(struct b43_wldev *dev)
 	/* Maximum Contention Window */
 	b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
 
-	if ((dev->sdev->bus->bustype == SSB_BUSTYPE_PCMCIA) ||
-	    (dev->sdev->bus->bustype == SSB_BUSTYPE_SDIO) ||
+	if (b43_bus_host_is_pcmcia(dev->dev) ||
+	    b43_bus_host_is_sdio(dev->dev) ||
 	    dev->use_pio) {
 		dev->__using_pio_transfers = 1;
 		err = b43_pio_init(dev);