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| author |   Inaky Perez-Gonzalez <inaky@linux.intel.com> | 2009-10-08 12:33:50 +0900 |
|---|---|---|
| committer | Inaky Perez-Gonzalez <inaky@linux.intel.com> | 2009-10-19 15:56:23 +0900 |
| commit | 097acbeff98178e01c2f6adb2259ab4d811340cc (patch) | |
| tree | 72546c92d9438b1cad4dd7b37a3298a0763ff9fa /drivers/net/wimax | |
| parent | wimax/i2400m: fix oops caused by race condition when exiting USB kthreads (diff) | |
| download | linux-dev-097acbeff98178e01c2f6adb2259ab4d811340cc.tar.xz linux-dev-097acbeff98178e01c2f6adb2259ab4d811340cc.zip | |
wimax/i2400m: make i2400m->bus_dev_{stop,start}() optional
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@linux.intel.com>
Diffstat (limited to 'drivers/net/wimax')
| -rw-r--r-- | drivers/net/wimax/i2400m/driver.c | 14 | ||||
| -rw-r--r-- | 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 cc900b99e60a..cc58a864bd06 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 55bca430c69b..5eee985f2926 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 |