From: Carl Huang <cjhuang@xxxxxxxxxxxxxx> For QCA6390, set wmi credit to 1 to avoid back-to-back write to shadow register when shadow register is enabled. 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/htc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/htc.c b/drivers/net/wireless/ath/ath11k/htc.c index 4de2350dfbf3..6b57dc273e0b 100644 --- a/drivers/net/wireless/ath/ath11k/htc.c +++ b/drivers/net/wireless/ath/ath11k/htc.c @@ -515,6 +515,12 @@ int ath11k_htc_wait_target(struct ath11k_htc *htc) return -ECOMM; } + /* For QCA6390, wmi endpoint uses 1 credit to avoid + * back-to-back write. + */ + if (ab->hw_params.supports_shadow_regs) + htc->total_transmit_credits = 1; + ath11k_htc_setup_target_buffer_assignments(htc); return 0; -- 2.7.4
