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rt2x00: Move start() and stop() handlers into rt2x00lib.c

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suspend & resume was broken since it called rt2x00mac_start()
and rt2x00mac_stop() which would fail to execute because the
DEVICE_PRESENT flag was not set.

Move the start and stop handlers into rt2x00lib.c which are called
from rt2x00mac_start() and rt2x00mac_stop() after they have checked
the DEVICE_PRESENT flag, while suspend and resume handlers can
directly call those functions.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn 2008-01-06 23:40:07 +01:00 committed by David S. Miller
parent 042671040d
commit e37ea2135b
3 changed files with 66 additions and 46 deletions
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66
drivers/net/wireless/rt2x00/rt2x00dev.c
View file

@ -1046,7 +1046,7 @@ static void rt2x00lib_free_ring_entries(struct rt2x00_dev *rt2x00dev)
}
}
void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
{
if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
return;
@ -1067,7 +1067,7 @@ void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
rt2x00lib_free_ring_entries(rt2x00dev);
}
int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
{
int status;
@ -1110,6 +1110,58 @@ exit:
return status;
}
int rt2x00lib_start(struct rt2x00_dev *rt2x00dev)
{
int retval;
if (test_bit(DEVICE_STARTED, &rt2x00dev->flags))
return 0;
/*
* If this is the first interface which is added,
* we should load the firmware now.
*/
if (test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags)) {
retval = rt2x00lib_load_firmware(rt2x00dev);
if (retval)
return retval;
}
/*
* Initialize the device.
*/
retval = rt2x00lib_initialize(rt2x00dev);
if (retval)
return retval;
/*
* Enable radio.
*/
retval = rt2x00lib_enable_radio(rt2x00dev);
if (retval) {
rt2x00lib_uninitialize(rt2x00dev);
return retval;
}
__set_bit(DEVICE_STARTED, &rt2x00dev->flags);
return 0;
}
void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev)
{
if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
return;
/*
* Perhaps we can add something smarter here,
* but for now just disabling the radio should do.
*/
rt2x00lib_disable_radio(rt2x00dev);
__clear_bit(DEVICE_STARTED, &rt2x00dev->flags);
}
/*
* driver allocation handlers.
*/
@ -1295,7 +1347,7 @@ int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
* Disable radio and unitialize all items
* that must be recreated on resume.
*/
rt2x00mac_stop(rt2x00dev->hw);
rt2x00lib_stop(rt2x00dev);
rt2x00lib_uninitialize(rt2x00dev);
rt2x00debug_deregister(rt2x00dev);
@ -1317,7 +1369,6 @@ int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
int retval;
NOTICE(rt2x00dev, "Waking up.\n");
__set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
/*
* Open the debugfs entry.
@ -1333,7 +1384,7 @@ int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
/*
* Reinitialize device and all active interfaces.
*/
retval = rt2x00mac_start(rt2x00dev->hw);
retval = rt2x00lib_start(rt2x00dev);
if (retval)
goto exit;
@ -1348,6 +1399,11 @@ int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
rt2x00lib_config_bssid(rt2x00dev, intf->bssid);
rt2x00lib_config_type(rt2x00dev, intf->type);
/*
* We are ready again to receive requests from mac80211.
*/
__set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
/*
* It is possible that during that mac80211 has attempted
* to send frames while we were suspending or resuming.

4
drivers/net/wireless/rt2x00/rt2x00lib.h
View file

@ -44,8 +44,8 @@ void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev);
/*
* Initialization handlers.
*/
int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev);
void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev);
int rt2x00lib_start(struct rt2x00_dev *rt2x00dev);
void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev);
/*
* Configuration handlers.

42
drivers/net/wireless/rt2x00/rt2x00mac.c
View file

@ -139,41 +139,11 @@ EXPORT_SYMBOL_GPL(rt2x00mac_tx);
int rt2x00mac_start(struct ieee80211_hw *hw)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
int status;
if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) ||
test_bit(DEVICE_STARTED, &rt2x00dev->flags))
if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags))
return 0;
/*
* If this is the first interface which is added,
* we should load the firmware now.
*/
if (test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags)) {
status = rt2x00lib_load_firmware(rt2x00dev);
if (status)
return status;
}
/*
* Initialize the device.
*/
status = rt2x00lib_initialize(rt2x00dev);
if (status)
return status;
/*
* Enable radio.
*/
status = rt2x00lib_enable_radio(rt2x00dev);
if (status) {
rt2x00lib_uninitialize(rt2x00dev);
return status;
}
__set_bit(DEVICE_STARTED, &rt2x00dev->flags);
return 0;
return rt2x00lib_start(rt2x00dev);
}
EXPORT_SYMBOL_GPL(rt2x00mac_start);
@ -184,13 +154,7 @@ void rt2x00mac_stop(struct ieee80211_hw *hw)
if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags))
return;
/*
* Perhaps we can add something smarter here,
* but for now just disabling the radio should do.
*/
rt2x00lib_disable_radio(rt2x00dev);
__clear_bit(DEVICE_STARTED, &rt2x00dev->flags);
rt2x00lib_stop(rt2x00dev);
}
EXPORT_SYMBOL_GPL(rt2x00mac_stop);