[PATCH 5.19 0326/1157] ath11k: fix IRQ affinity warning on shutdown

Greg Kroah-Hartman
2022-08-15T23:22:20Z

From: Johan Hovold <johan+linaro@kernel.org>

[ Upstream commit 3bd0c69653ac636eae8872aacdcd4156f772f928 ]

Make sure to clear the IRQ affinity hint also on shutdown to avoid
triggering a WARN_ON_ONCE() in __free_irq() when stopping MHI while
using a single MSI vector.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3

Fixes: e94b07493da3 ("ath11k: Set IRQ affinity to CPU0 in case of one MSI vector")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220523143258.24818-1-johan+linaro@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath11k/pci.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index dedf1b88ddf6..487a303b3077 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -920,7 +920,9 @@ static void ath11k_pci_remove(struct pci_dev *pdev)
static void ath11k_pci_shutdown(struct pci_dev *pdev)
{
struct ath11k_base *ab = pci_get_drvdata(pdev);
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);

+ ath11k_pci_set_irq_affinity_hint(ab_pci, NULL);
ath11k_pci_power_down(ab);
}

--
2.35.1