[PATCH ath-current 1/3] wifi: ath11k: fix sporadic WLAN initialization failures

[Miaoqing Pan]

On WCN6750 platforms, reboot stress testing occasionally results in WLAN
initialization failures after boot. The WPSS firmware reaches the running
state successfully, but no WLAN interface is created.

Analysis shows that ath11k_ahb depends on the QRTR SMD transport for QMI
communication with WPSS firmware. However, this dependency is not
currently expressed in Kconfig, allowing qrtr_smd and ath11k_ahb to load
in either order when built as modules.

If ath11k_ahb is loaded before qrtr_smd becomes available, WLAN
initialization may not complete successfully.

Make the QRTR and QRTR_SMD dependencies explicit and add a soft
dependency to ensure qrtr_smd is loaded before ath11k_ahb.

Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.2.0.c2-00204-QCAMSLSWPLZ-1

Fixes: 00402f49d26f ("ath11k: Add support for WCN6750 device")
Signed-off-by: Miaoqing Pan <miaoqing.pan at oss.qualcomm.com>
---
 drivers/net/wireless/ath/ath11k/Kconfig | 3 +++
 drivers/net/wireless/ath/ath11k/ahb.c   | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/Kconfig b/drivers/net/wireless/ath/ath11k/Kconfig
index 122726f84492..44b520d2e66e 100644
--- a/drivers/net/wireless/ath/ath11k/Kconfig
+++ b/drivers/net/wireless/ath/ath11k/Kconfig
@@ -14,6 +14,9 @@ config ATH11K_AHB
 	tristate "Atheros ath11k AHB support"
 	depends on ATH11K
 	depends on REMOTEPROC
+	select RPMSG
+	select QRTR
+	select QRTR_SMD
 	help
 	  This module adds support for AHB bus
 
diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c
index 1e1dea485760..fb5640882b98 100644
--- a/drivers/net/wireless/ath/ath11k/ahb.c
+++ b/drivers/net/wireless/ath/ath11k/ahb.c
@@ -1312,5 +1312,6 @@ static struct platform_driver ath11k_ahb_driver = {
 
 module_platform_driver(ath11k_ahb_driver);
 
+MODULE_SOFTDEP("pre: qrtr_smd");
 MODULE_DESCRIPTION("Driver support for Qualcomm Technologies 802.11ax WLAN AHB devices");
 MODULE_LICENSE("Dual BSD/GPL");
-- 
2.34.1