[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20190729190830.601225249@linuxfoundation.org>
Date: Mon, 29 Jul 2019 21:19:29 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Miaoqing Pan <miaoqing@...eaurora.org>,
Kalle Valo <kvalo@...eaurora.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 078/293] ath10k: fix PCIE device wake up failed
[ Upstream commit 011d4111c8c602ea829fa4917af1818eb0500a90 ]
Observed PCIE device wake up failed after ~120 iterations of
soft-reboot test. The error message is
"ath10k_pci 0000:01:00.0: failed to wake up device : -110"
The call trace as below:
ath10k_pci_probe -> ath10k_pci_force_wake -> ath10k_pci_wake_wait ->
ath10k_pci_is_awake
Once trigger the device to wake up, we will continuously check the RTC
state until it returns RTC_STATE_V_ON or timeout.
But for QCA99x0 chips, we use wrong value for RTC_STATE_V_ON.
Occasionally, we get 0x7 on the fist read, we thought as a failure
case, but actually is the right value, also verified with the spec.
So fix the issue by changing RTC_STATE_V_ON from 0x5 to 0x7, passed
~2000 iterations.
Tested HW: QCA9984
Signed-off-by: Miaoqing Pan <miaoqing@...eaurora.org>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/net/wireless/ath/ath10k/hw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath10k/hw.c b/drivers/net/wireless/ath/ath10k/hw.c
index a860691d635d..e96534cd3d8b 100644
--- a/drivers/net/wireless/ath/ath10k/hw.c
+++ b/drivers/net/wireless/ath/ath10k/hw.c
@@ -168,7 +168,7 @@ const struct ath10k_hw_values qca6174_values = {
};
const struct ath10k_hw_values qca99x0_values = {
- .rtc_state_val_on = 5,
+ .rtc_state_val_on = 7,
.ce_count = 12,
.msi_assign_ce_max = 12,
.num_target_ce_config_wlan = 10,
--
2.20.1
Powered by blists - more mailing lists