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| author | Miaoqing Pan <miaoqing@codeaurora.org> | 2019-05-30 09:49:20 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-26 09:14:12 +0200 |
| commit | 7201cc227d4a6314392368d0fb9140696dc7b6bb (patch) | |
| tree | d933e7b1c992f85baa9fe359f9957619730f325b /drivers | |
| parent | 8a808fadc9f701d0f4e849724cf33d8bfe214b3f (diff) | |
| download | linux-stable-7201cc227d4a6314392368d0fb9140696dc7b6bb.tar.gz linux-stable-7201cc227d4a6314392368d0fb9140696dc7b6bb.tar.bz2 linux-stable-7201cc227d4a6314392368d0fb9140696dc7b6bb.zip | |
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@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/hw.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath10k/hw.c b/drivers/net/wireless/ath/ath10k/hw.c index 677535b3d207..476e0535f06f 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, |