diff options
| -rw-r--r-- | drivers/net/wireless/ath/ath12k/pci.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c index a6a5f9bcffbd..cab68540b6b1 100644 --- a/drivers/net/wireless/ath/ath12k/pci.c +++ b/drivers/net/wireless/ath/ath12k/pci.c @@ -708,6 +708,25 @@ static void ath12k_pci_msi_free(struct ath12k_pci *ab_pci) pci_free_irq_vectors(ab_pci->pdev); } +static int ath12k_pci_config_msi_data(struct ath12k_pci *ab_pci) +{ + struct msi_desc *msi_desc; + + msi_desc = irq_get_msi_desc(ab_pci->pdev->irq); + if (!msi_desc) { + ath12k_err(ab_pci->ab, "msi_desc is NULL!\n"); + pci_free_irq_vectors(ab_pci->pdev); + return -EINVAL; + } + + ab_pci->msi_ep_base_data = msi_desc->msg.data; + + ath12k_dbg(ab_pci->ab, ATH12K_DBG_PCI, "pci after request_irq msi_ep_base_data %d\n", + ab_pci->msi_ep_base_data); + + return 0; +} + static int ath12k_pci_claim(struct ath12k_pci *ab_pci, struct pci_dev *pdev) { struct ath12k_base *ab = ab_pci->ab; @@ -1286,6 +1305,17 @@ static int ath12k_pci_probe(struct pci_dev *pdev, goto err_ce_free; } + /* kernel may allocate a dummy vector before request_irq and + * then allocate a real vector when request_irq is called. + * So get msi_data here again to avoid spurious interrupt + * as msi_data will configured to srngs. + */ + ret = ath12k_pci_config_msi_data(ab_pci); + if (ret) { + ath12k_err(ab, "failed to config msi_data: %d\n", ret); + goto err_free_irq; + } + ret = ath12k_core_init(ab); if (ret) { ath12k_err(ab, "failed to init core: %d\n", ret); |