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

diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index 776362d151cbb6e1a9be03c05c1bd36f7f3e81de..0aeef2948ff56bd49a808fd7abd6a98f47020772 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -981,7 +981,7 @@ static __maybe_unused int ath11k_pci_pm_suspend(struct device *dev)
        if (ret)
                ath11k_warn(ab, "failed to suspend core: %d\n", ret);
 
-       return ret;
+       return 0;
 }
 
 static __maybe_unused int ath11k_pci_pm_resume(struct device *dev)