diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/pci.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/pci.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c index 223606311261..645f0fbd9179 100644 --- a/drivers/net/wireless/ath/ath9k/pci.c +++ b/drivers/net/wireless/ath/ath9k/pci.c @@ -22,6 +22,8 @@ #include <linux/module.h> #include "ath9k.h" +extern int ath9k_use_msi; + static const struct pci_device_id ath_pci_id_table[] = { { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */ { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */ @@ -889,6 +891,7 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) u32 val; int ret = 0; char hw_name[64]; + int msi_enabled = 0; if (pcim_enable_device(pdev)) return -EIO; @@ -960,7 +963,20 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) sc->mem = pcim_iomap_table(pdev)[0]; sc->driver_data = id->driver_data; - ret = request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc); + if (ath9k_use_msi) { + if (pci_enable_msi(pdev) == 0) { + msi_enabled = 1; + dev_err(&pdev->dev, "Using MSI\n"); + } else { + dev_err(&pdev->dev, "Using INTx\n"); + } + } + + if (!msi_enabled) + ret = request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc); + else + ret = request_irq(pdev->irq, ath_isr, 0, "ath9k", sc); + if (ret) { dev_err(&pdev->dev, "request_irq failed\n"); goto err_irq; @@ -974,6 +990,9 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_init; } + sc->sc_ah->msi_enabled = msi_enabled; + sc->sc_ah->msi_reg = 0; + ath9k_hw_name(sc->sc_ah, hw_name, sizeof(hw_name)); wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n", hw_name, (unsigned long)sc->mem, pdev->irq); |