ath10k: fix S5 power consumption issue for QCA9377

After system entering S5 (shut down but system still
providing power to QCA9377) on Ubuntu platform, power
consumption of QCA9377 is 69mA, which is too high.
The root cause is pci_soft_reset is not set for QCA9377
during pci probe.
To fix this issue, set 'pci_soft_reset' to 'th10k_pci_warm_reset',
and then the power consumption drops to a normal value(10mA).
Verified on Dell Ubuntu platform with firmware:
WLAN.TF.1.0-00002-QCATFSWPZ-5

Signed-off-by: Yu Wang <yyuwang@codeaurora.org>
Signed-off-by: Yu Wang <yyuwang@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index 01b4edb00e9e6bd34b5df15c0bbf08261f259b0f..0a4ce98ae69c89137d71a07005765183dc9df363 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -3554,7 +3554,7 @@ static int ath10k_pci_probe(struct pci_dev *pdev,
        case QCA9377_1_0_DEVICE_ID:
                hw_rev = ATH10K_HW_QCA9377;
                pci_ps = true;
-               pci_soft_reset = NULL;
+               pci_soft_reset = ath10k_pci_warm_reset;
                pci_hard_reset = ath10k_pci_qca6174_chip_reset;
                targ_cpu_to_ce_addr = ath10k_pci_qca6174_targ_cpu_to_ce_addr;
                break;