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path: root/drivers/net/wimax/i2400m/driver.c
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Diffstat (limited to 'drivers/net/wimax/i2400m/driver.c')
-rw-r--r--drivers/net/wimax/i2400m/driver.c45
1 files changed, 30 insertions, 15 deletions
diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c
index 07a54bad237b..304f0443ca4b 100644
--- a/drivers/net/wimax/i2400m/driver.c
+++ b/drivers/net/wimax/i2400m/driver.c
@@ -62,6 +62,7 @@
* unregister_netdev()
*/
#include "i2400m.h"
+#include <linux/etherdevice.h>
#include <linux/wimax/i2400m.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
@@ -81,6 +82,14 @@ module_param_named(rx_reorder_disabled, i2400m_rx_reorder_disabled, int, 0644);
MODULE_PARM_DESC(rx_reorder_disabled,
"If true, RX reordering will be disabled.");
+int i2400m_power_save_disabled; /* 0 (power saving enabled) by default */
+module_param_named(power_save_disabled, i2400m_power_save_disabled, int, 0644);
+MODULE_PARM_DESC(power_save_disabled,
+ "If true, the driver will not tell the device to enter "
+ "power saving mode when it reports it is ready for it. "
+ "False by default (so the device is told to do power "
+ "saving).");
+
/**
* i2400m_queue_work - schedule work on a i2400m's queue
*
@@ -171,7 +180,6 @@ int i2400m_schedule_work(struct i2400m *i2400m,
int result;
struct i2400m_work *iw;
- BUG_ON(i2400m->work_queue == NULL);
result = -ENOMEM;
iw = kzalloc(sizeof(*iw), gfp_flags);
if (iw == NULL)
@@ -234,9 +242,6 @@ int i2400m_op_msg_from_user(struct wimax_dev *wimax_dev,
result = PTR_ERR(ack_skb);
if (IS_ERR(ack_skb))
goto error_msg_to_dev;
- if (unlikely(i2400m->trace_msg_from_user))
- wimax_msg(&i2400m->wimax_dev, "trace",
- msg_buf, msg_len, GFP_KERNEL);
result = wimax_msg_send(&i2400m->wimax_dev, ack_skb);
error_msg_to_dev:
d_fnend(4, dev, "(wimax_dev %p [i2400m %p] msg_buf %p msg_len %zu "
@@ -379,6 +384,11 @@ 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).
*/
@@ -389,7 +399,7 @@ int __i2400m_dev_start(struct i2400m *i2400m, enum i2400m_bri flags)
struct wimax_dev *wimax_dev = &i2400m->wimax_dev;
struct net_device *net_dev = wimax_dev->net_dev;
struct device *dev = i2400m_dev(i2400m);
- int times = 3;
+ int times = i2400m->bus_bm_retries;
d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
retry:
@@ -404,15 +414,15 @@ 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;
@@ -434,17 +444,17 @@ 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);
error_tx_setup:
error_bootstrap:
- if (result == -ERESTARTSYS && times-- > 0) {
- flags = I2400M_BRI_SOFT;
+ if (result == -EL3RST && times-- > 0) {
+ flags = I2400M_BRI_SOFT|I2400M_BRI_MAC_REINIT;
goto retry;
}
d_fnend(3, dev, "(net_dev %p [i2400m %p]) = %d\n",
@@ -473,7 +483,9 @@ 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)
@@ -485,8 +497,8 @@ 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);
@@ -548,7 +560,7 @@ void __i2400m_dev_reset_handle(struct work_struct *ws)
* i2400m_dev_stop() [we are shutting down anyway, so
* ignore it] or we are resetting somewhere else. */
dev_err(dev, "device rebooted\n");
- i2400m_msg_to_dev_cancel_wait(i2400m, -ERESTARTSYS);
+ i2400m_msg_to_dev_cancel_wait(i2400m, -EL3RST);
complete(&i2400m->msg_completion);
goto out;
}
@@ -598,6 +610,8 @@ out:
*/
int i2400m_dev_reset_handle(struct i2400m *i2400m)
{
+ i2400m->boot_mode = 1;
+ wmb(); /* Make sure i2400m_msg_to_dev() sees boot_mode */
return i2400m_schedule_work(i2400m, __i2400m_dev_reset_handle,
GFP_ATOMIC);
}
@@ -650,6 +664,7 @@ int i2400m_setup(struct i2400m *i2400m, enum i2400m_bri bm_flags)
result = i2400m_read_mac_addr(i2400m);
if (result < 0)
goto error_read_mac_addr;
+ random_ether_addr(i2400m->src_mac_addr);
result = register_netdev(net_dev); /* Okey dokey, bring it up */
if (result < 0) {