In coming commits, the i2400m SDIO driver will not use
i2400m->bus_dev_stop().
Thus changed to check before calling, as an empty stub has more
overhead than a call to check if the function pointer is non-NULL.
Signed-off-by: Inaky Perez-Gonzalez <inaky at linux.intel.com>
---
drivers/net/wimax/i2400m/driver.c | 14 +++++++++-----
drivers/net/wimax/i2400m/i2400m.h | 14 +++++++-------
2 files changed, 16 insertions(+), 12 deletions(-)
diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c
index cc900b9..cc58a86 100644
--- a/drivers/net/wimax/i2400m/driver.c
+++ b/drivers/net/wimax/i2400m/driver.c
@@ -384,9 +384,11 @@ retry:
dev_err(dev, "cannot create workqueue\n");
goto error_create_workqueue;
}
- result = i2400m->bus_dev_start(i2400m);
- if (result < 0)
- goto error_bus_dev_start;
+ if (i2400m->bus_dev_start) {
+ result = i2400m->bus_dev_start(i2400m);
+ if (result < 0)
+ goto error_bus_dev_start;
+ }
i2400m->ready = 1;
wmb(); /* see i2400m->ready's documentation */
/* process pending reports from the device */
@@ -413,7 +415,8 @@ error_check_mac_addr:
wmb(); /* see i2400m->ready's documentation */
flush_workqueue(i2400m->work_queue);
error_fw_check:
- i2400m->bus_dev_stop(i2400m);
+ if (i2400m->bus_dev_stop)
+ i2400m->bus_dev_stop(i2400m);
error_bus_dev_start:
destroy_workqueue(i2400m->work_queue);
error_create_workqueue:
@@ -480,7 +483,8 @@ void __i2400m_dev_stop(struct i2400m *i2400m)
wmb(); /* see i2400m->ready's documentation */
flush_workqueue(i2400m->work_queue);
- i2400m->bus_dev_stop(i2400m);
+ if (i2400m->bus_dev_stop)
+ i2400m->bus_dev_stop(i2400m);
destroy_workqueue(i2400m->work_queue);
i2400m_rx_release(i2400m);
i2400m_tx_release(i2400m);
diff --git a/drivers/net/wimax/i2400m/i2400m.h b/drivers/net/wimax/i2400m/i2400m.h
index 55bca43..5eee985 100644
--- a/drivers/net/wimax/i2400m/i2400m.h
+++ b/drivers/net/wimax/i2400m/i2400m.h
@@ -245,19 +245,19 @@ struct i2400m_barker_db;
* all the host resources created to handle communication with
* the device.
*
- * @bus_dev_start: [fill] Function called by the bus-generic code
- * [i2400m_dev_start()] to setup the bus-specific communications
- * to the the device. See LIFE CYCLE above.
+ * @bus_dev_start: [optional fill] Function called by the bus-generic
+ * code [i2400m_dev_start()] to do things needed to start the
+ * device. See LIFE CYCLE above.
*
* NOTE: Doesn't need to upload the firmware, as that is taken
* care of by the bus-generic code.
*
- * @bus_dev_stop: [fill] Function called by the bus-generic code
- * [i2400m_dev_stop()] to shutdown the bus-specific communications
- * to the the device. See LIFE CYCLE above.
+ * @bus_dev_stop: [optional fill] Function called by the bus-generic
+ * code [i2400m_dev_stop()] to do things needed for stopping the
+ * device. See LIFE CYCLE above.
*
* This function does not need to reset the device, just tear down
- * all the host resources created to handle communication with
+ * all the host resources created to handle communication with
* the device.
*
* @bus_tx_kick: [fill] Function called by the bus-generic code to let
--
1.6.2.5
