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rt2x00: Fix failed SLEEP->AWAKE and AWAKE->SLEEP transitions. 

(Based on a patch created by Ondrej Zary)

In some circumstances the Ralink devices do not properly go to sleep
or wake up, with timeouts occurring.
Fix this by retrying telling the device that it has to wake up or
sleep.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gertjan van Wingerde 2010-05-13 21:16:03 +02:00 committed by John W. Linville
parent 3dc3fc52ea
commit 9655a6ec19
4 changed files with 18 additions and 14 deletions
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9
drivers/net/wireless/rt2x00/rt2400pci.c
View File

@ -926,7 +926,7 @@ static void rt2400pci_disable_radio(struct rt2x00_dev *rt2x00dev)
static int rt2400pci_set_state(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
u32 reg;
u32 reg, reg2;
unsigned int i;
char put_to_sleep;
char bbp_state;
@ -947,11 +947,12 @@ static int rt2400pci_set_state(struct rt2x00_dev *rt2x00dev,
* device has entered the correct state.
*/
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg2);
bbp_state = rt2x00_get_field32(reg2, PWRCSR1_BBP_CURR_STATE);
rf_state = rt2x00_get_field32(reg2, PWRCSR1_RF_CURR_STATE);
if (bbp_state == state && rf_state == state)
return 0;
rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
msleep(10);
}

9
drivers/net/wireless/rt2x00/rt2500pci.c
View File

@ -1084,7 +1084,7 @@ static void rt2500pci_disable_radio(struct rt2x00_dev *rt2x00dev)
static int rt2500pci_set_state(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
u32 reg;
u32 reg, reg2;
unsigned int i;
char put_to_sleep;
char bbp_state;
@ -1105,11 +1105,12 @@ static int rt2500pci_set_state(struct rt2x00_dev *rt2x00dev,
* device has entered the correct state.
*/
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg2);
bbp_state = rt2x00_get_field32(reg2, PWRCSR1_BBP_CURR_STATE);
rf_state = rt2x00_get_field32(reg2, PWRCSR1_RF_CURR_STATE);
if (bbp_state == state && rf_state == state)
return 0;
rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
msleep(10);
}

7
drivers/net/wireless/rt2x00/rt61pci.c
View File

@ -1689,7 +1689,7 @@ static void rt61pci_disable_radio(struct rt2x00_dev *rt2x00dev)
static int rt61pci_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
{
u32 reg;
u32 reg, reg2;
unsigned int i;
char put_to_sleep;
@ -1706,10 +1706,11 @@ static int rt61pci_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
* device has entered the correct state.
*/
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00pci_register_read(rt2x00dev, MAC_CSR12, &reg);
state = rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE);
rt2x00pci_register_read(rt2x00dev, MAC_CSR12, &reg2);
state = rt2x00_get_field32(reg2, MAC_CSR12_BBP_CURRENT_STATE);
if (state == !put_to_sleep)
return 0;
rt2x00pci_register_write(rt2x00dev, MAC_CSR12, reg);
msleep(10);
}

7
drivers/net/wireless/rt2x00/rt73usb.c
View File

@ -1366,7 +1366,7 @@ static void rt73usb_disable_radio(struct rt2x00_dev *rt2x00dev)
static int rt73usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
{
u32 reg;
u32 reg, reg2;
unsigned int i;
char put_to_sleep;
@ -1383,10 +1383,11 @@ static int rt73usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
* device has entered the correct state.
*/
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00usb_register_read(rt2x00dev, MAC_CSR12, &reg);
state = rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE);
rt2x00usb_register_read(rt2x00dev, MAC_CSR12, &reg2);
state = rt2x00_get_field32(reg2, MAC_CSR12_BBP_CURRENT_STATE);
if (state == !put_to_sleep)
return 0;
rt2x00usb_register_write(rt2x00dev, MAC_CSR12, reg);
msleep(10);
}