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Mon, 24 Feb 2025 21:34:56 -0800 (PST) From: Manivannan Sadhasivam To: jjohnson@kernel.org Cc: linux-wireless@vger.kernel.org, ath12k@lists.infradead.org, linux-kernel@vger.kernel.org, ath11k@lists.infradead.org, Manivannan Sadhasivam , Baochen Qiang Subject: [PATCH v2 1/3] wifi: ath11k: Clear affinity hint before calling ath11k_pcic_free_irq() in error path Date: Tue, 25 Feb 2025 11:04:45 +0530 Message-Id: <20250225053447.16824-2-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250225053447.16824-1-manivannan.sadhasivam@linaro.org> References: <20250225053447.16824-1-manivannan.sadhasivam@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" If a shared IRQ is used by the driver due to platform limitation, then the IRQ affinity hint is set right after the allocation of IRQ vectors in ath11k_pci_alloc_msi(). This does no harm unless one of the functions requesting the IRQ fails and attempt to free the IRQ. This results in the below warning: WARNING: CPU: 7 PID: 349 at kernel/irq/manage.c:1929 free_irq+0x278/0x29c Call trace: free_irq+0x278/0x29c ath11k_pcic_free_irq+0x70/0x10c [ath11k] ath11k_pci_probe+0x800/0x820 [ath11k_pci] local_pci_probe+0x40/0xbc The warning is due to not clearing the affinity hint before freeing the IRQs. So to fix this issue, clear the IRQ affinity hint before calling ath11k_pcic_free_irq() in the error path. The affinity will be cleared once again further down the error path due to code organization, but that does no harm. Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-05266-QCAHSTSWPLZ_V2_TO_X86-1 Cc: Baochen Qiang Fixes: 39564b475ac5 ("wifi: ath11k: fix boot failure with one MSI vector") Signed-off-by: Manivannan Sadhasivam Reviewed-by: Baochen Qiang --- 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/a= th/ath11k/pci.c index b93f04973ad7..eaac9eabcc70 100644 --- a/drivers/net/wireless/ath/ath11k/pci.c +++ b/drivers/net/wireless/ath/ath11k/pci.c @@ -939,6 +939,8 @@ static int ath11k_pci_probe(struct pci_dev *pdev, return 0; =20 err_free_irq: + /* __free_irq() expects the caller to have cleared the affinity hint */ + ath11k_pci_set_irq_affinity_hint(ab_pci, NULL); ath11k_pcic_free_irq(ab); =20 err_ce_free: --=20 2.25.1