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authorInaky Perez-Gonzalez <inaky@linux.intel.com>2009-05-08 13:02:41 -0700
committerInaky Perez-Gonzalez <inaky@linux.intel.com>2009-06-11 03:30:18 -0700
commite9a6b45be580d648ed2f21646214733504bd4d6f (patch)
treee8dccd2ef276a4725ee9f1bfaad8b3ce5d0f6cf1 /drivers
parentfff1068559a2ae00a036b80c5df3c564fc6c6305 (diff)
wimax/i2400m: i2400m's work queue should be initialized before RX support
RX support is the only user of the work-queue, to process reports/notifications from the device. Thus, it needs the work queue to be initialized first. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wimax/i2400m/driver.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c
index 86dd18a48358..006eb1233a8b 100644
--- a/drivers/net/wimax/i2400m/driver.c
+++ b/drivers/net/wimax/i2400m/driver.c
@@ -385,6 +385,11 @@ error:
* Uploads firmware and brings up all the resources needed to be able
* to communicate with the device.
*
+ * The workqueue has to be setup early, at least before RX handling
+ * (it's only real user for now) so it can process reports as they
+ * arrive. We also want to destroy it if we retry, to make sure it is
+ * flushed...easier like this.
+ *
* TX needs to be setup before the bus-specific code (otherwise on
* shutdown, the bus-tx code could try to access it).
*/
@@ -410,15 +415,15 @@ retry:
result = i2400m_rx_setup(i2400m);
if (result < 0)
goto error_rx_setup;
- result = i2400m->bus_dev_start(i2400m);
- if (result < 0)
- goto error_bus_dev_start;
i2400m->work_queue = create_singlethread_workqueue(wimax_dev->name);
if (i2400m->work_queue == NULL) {
result = -ENOMEM;
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;
result = i2400m_firmware_check(i2400m); /* fw versions ok? */
if (result < 0)
goto error_fw_check;
@@ -440,10 +445,10 @@ retry:
error_dev_initialize:
error_check_mac_addr:
error_fw_check:
- destroy_workqueue(i2400m->work_queue);
-error_create_workqueue:
i2400m->bus_dev_stop(i2400m);
error_bus_dev_start:
+ destroy_workqueue(i2400m->work_queue);
+error_create_workqueue:
i2400m_rx_release(i2400m);
error_rx_setup:
i2400m_tx_release(i2400m);
@@ -479,7 +484,9 @@ int i2400m_dev_start(struct i2400m *i2400m, enum i2400m_bri bm_flags)
*
* Returns: 0 if ok, < 0 errno code on error.
*
- * Releases all the resources allocated to communicate with the device.
+ * Releases all the resources allocated to communicate with the
+ * device. Note we cannot destroy the workqueue earlier as until RX is
+ * fully destroyed, it could still try to schedule jobs.
*/
static
void __i2400m_dev_stop(struct i2400m *i2400m)
@@ -491,8 +498,8 @@ void __i2400m_dev_stop(struct i2400m *i2400m)
wimax_state_change(wimax_dev, __WIMAX_ST_QUIESCING);
i2400m_dev_shutdown(i2400m);
i2400m->ready = 0;
- destroy_workqueue(i2400m->work_queue);
i2400m->bus_dev_stop(i2400m);
+ destroy_workqueue(i2400m->work_queue);
i2400m_rx_release(i2400m);
i2400m_tx_release(i2400m);
wimax_state_change(wimax_dev, WIMAX_ST_DOWN);