IB/ipath: Test interrupts at driver startup

[linux-2.6-omap-h63xx.git] / drivers / infiniband / hw / ipath / ipath_driver.c

diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index da4a2cfb61b468da8566b6f06415c62c25b2f24c..e397ec0d388fc694e57ade53f7b537d4a79071e6 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -104,6 +104,9 @@ static int __devinit ipath_init_one(struct pci_dev *,
 #define PCI_DEVICE_ID_INFINIPATH_HT 0xd
 #define PCI_DEVICE_ID_INFINIPATH_PE800 0x10
 
+/* Number of seconds before our card status check...  */
+#define STATUS_TIMEOUT 60
+
 static const struct pci_device_id ipath_pci_tbl[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_PATHSCALE, PCI_DEVICE_ID_INFINIPATH_HT) },
        { PCI_DEVICE(PCI_VENDOR_ID_PATHSCALE, PCI_DEVICE_ID_INFINIPATH_PE800) },
@@ -119,6 +122,18 @@ static struct pci_driver ipath_driver = {
        .id_table = ipath_pci_tbl,
 };
 
+static void ipath_check_status(struct work_struct *work)
+{
+       struct ipath_devdata *dd = container_of(work, struct ipath_devdata,
+                                               status_work.work);
+
+       /*
+        * If we don't have any interrupts, let the user know and
+        * don't bother checking again.
+        */
+       if (dd->ipath_int_counter == 0)
+               dev_err(&dd->pcidev->dev, "No interrupts detected.\n");
+}
 
 static inline void read_bars(struct ipath_devdata *dd, struct pci_dev *dev,
                             u32 *bar0, u32 *bar1)
@@ -187,6 +202,8 @@ static struct ipath_devdata *ipath_alloc_devdata(struct pci_dev *pdev)
        dd->pcidev = pdev;
        pci_set_drvdata(pdev, dd);
 
+       INIT_DELAYED_WORK(&dd->status_work, ipath_check_status);
+
        list_add(&dd->ipath_list, &ipath_dev_list);
 
 bail_unlock:
@@ -511,6 +528,9 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
        ipath_diag_add(dd);
        ipath_register_ib_device(dd);
 
+       /* Check that card status in STATUS_TIMEOUT seconds. */
+       schedule_delayed_work(&dd->status_work, HZ * STATUS_TIMEOUT);
+
        goto bail;
 
 bail_irqsetup:
@@ -638,6 +658,9 @@ static void __devexit ipath_remove_one(struct pci_dev *pdev)
         */
        ipath_shutdown_device(dd);
 
+       cancel_delayed_work(&dd->status_work);
+       flush_scheduled_work();
+
        if (dd->verbs_dev)
                ipath_unregister_ib_device(dd->verbs_dev);