openwrt/package/kernel/mac80211/patches/ath11k/0037-wifi-ath11k-allow-system-suspend-to-survive-ath11k.patch

From 7c15430822e71e90203d87e6d0cfe83fa058b0dc Mon Sep 17 00:00:00 2001
From: Len Brown <len.brown@intel.com>
Date: Wed, 1 Feb 2023 12:32:01 -0600
Subject: [PATCH] wifi: ath11k: allow system suspend to survive ath11k

When ath11k runs into internal errors upon suspend,
it returns an error code to pci_pm_suspend, which
aborts the entire system suspend.

The driver should not abort system suspend, but should
keep its internal errors to itself, and allow the system
to suspend.  Otherwise, a user can suspend a laptop
by closing the lid and sealing it into a case, assuming
that is will suspend, rather than heating up and draining
the battery when in transit.

In practice, the ath11k device seems to have plenty of transient
errors, and subsequent suspend cycles after this failure
often succeed.

https://bugzilla.kernel.org/show_bug.cgi?id=216968

Fixes: d1b0c33850d29 ("ath11k: implement suspend for QCA6390 PCI devices")

Signed-off-by: Len Brown <len.brown@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230201183201.14431-1-len.brown@intel.com
---
 drivers/net/wireless/ath/ath11k/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -998,7 +998,7 @@ static __maybe_unused int ath11k_pci_pm_
 	if (ret)
 		ath11k_warn(ab, "failed to resume core: %d\n", ret);
 
-	return ret;
+	return 0;
 }
 
 static SIMPLE_DEV_PM_OPS(ath11k_pci_pm_ops,