From: Carl Huang <cjhuang@xxxxxxxxxxxxxx>
Just when resume from WoW, the write to select_window doesn't take
effect immediately, so read the register again to ensure the write
operation is finished.
Another change is to reset select_window to ZERO because this
register isn't restored after WoW, so the content of this register
becomes ZERO too.
Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Signed-off-by: Carl Huang <cjhuang@xxxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/pci.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index 770cefd53290..ee1c2edefa20 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -126,6 +126,7 @@ static inline void ath11k_pci_select_window(struct ath11k_pci *ab_pci, u32 offse
if (window != ab_pci->register_window) {
iowrite32(WINDOW_ENABLE_BIT | window,
ab->mem + WINDOW_REG_ADDRESS);
+ ioread32(ab->mem + WINDOW_REG_ADDRESS);
ab_pci->register_window = window;
}
}
--
2.7.4
