From 9655a6ec19ca656af246fb80817aa337892aefbf Mon Sep 17 00:00:00 2001 From: Gertjan van Wingerde Date: Thu, 13 May 2010 21:16:03 +0200 Subject: 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 Acked-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2400pci.c | 9 +++++---- drivers/net/wireless/rt2x00/rt2500pci.c | 9 +++++---- drivers/net/wireless/rt2x00/rt61pci.c | 7 ++++--- drivers/net/wireless/rt2x00/rt73usb.c | 7 ++++--- 4 files changed, 18 insertions(+), 14 deletions(-) (limited to 'drivers/net/wireless') diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c index 4ba7b038928..ad2c98af7e9 100644 --- a/drivers/net/wireless/rt2x00/rt2400pci.c +++ b/drivers/net/wireless/rt2x00/rt2400pci.c @@ -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, ®); - 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, ®2); + 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); } diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c index 89d132d4af1..41da3d218c6 100644 --- a/drivers/net/wireless/rt2x00/rt2500pci.c +++ b/drivers/net/wireless/rt2x00/rt2500pci.c @@ -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, ®); - 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, ®2); + 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); } diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 2e3076f6753..6a74baf4e93 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -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, ®); - state = rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE); + rt2x00pci_register_read(rt2x00dev, MAC_CSR12, ®2); + 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); } diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c index e35bd19c3c5..6e0d82efe92 100644 --- a/drivers/net/wireless/rt2x00/rt73usb.c +++ b/drivers/net/wireless/rt2x00/rt73usb.c @@ -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, ®); - state = rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE); + rt2x00usb_register_read(rt2x00dev, MAC_CSR12, ®2); + 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); } -- cgit v1.2.3-70-g09d2