IB/qib: Update QIB to use the latest PCI API

The QIB PCI IRQ code uses an obsolete PCI API.  Updating the code to use
the new PCI IRQ API and any necessary changes because of the new API.

Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 15 insertions, 37 deletions

diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index 04bdd3d487b1..78ce79be4120 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/drivers/infiniband/hw/qib/qib_iba7220.c
@@ -1780,15 +1780,6 @@ static void qib_setup_7220_setextled(struct qib_pportdata *ppd, u32 on)
 		qib_write_kreg(dd, kr_rcvpktledcnt, ledblink);
 }
 
-static void qib_7220_free_irq(struct qib_devdata *dd)
-{
-	if (dd->cspec->irq) {
-		free_irq(dd->cspec->irq, dd);
-		dd->cspec->irq = 0;
-	}
-	qib_nomsi(dd);
-}
-
 /*
  * qib_setup_7220_cleanup - clean up any per-chip chip-specific stuff
  * @dd: the qlogic_ib device
@@ -1798,7 +1789,7 @@ static void qib_7220_free_irq(struct qib_devdata *dd)
  */
 static void qib_setup_7220_cleanup(struct qib_devdata *dd)
 {
-	qib_7220_free_irq(dd);
+	qib_free_irq(dd);
 	kfree(dd->cspec->cntrs);
 	kfree(dd->cspec->portcntrs);
 }
@@ -2026,20 +2017,14 @@ bail:
  */
 static void qib_setup_7220_interrupt(struct qib_devdata *dd)
 {
-	if (!dd->cspec->irq)
-		qib_dev_err(dd,
-			"irq is 0, BIOS error?  Interrupts won't work\n");
-	else {
-		int ret = request_irq(dd->cspec->irq, qib_7220intr,
-			dd->msi_lo ? 0 : IRQF_SHARED,
-			QIB_DRV_NAME, dd);
+	int ret;
 
-		if (ret)
-			qib_dev_err(dd,
-				"Couldn't setup %s interrupt (irq=%d): %d\n",
-				dd->msi_lo ?  "MSI" : "INTx",
-				dd->cspec->irq, ret);
-	}
+	ret = pci_request_irq(dd->pcidev, 0, qib_7220intr, NULL, dd,
+			      QIB_DRV_NAME);
+	if (ret)
+		qib_dev_err(dd, "Couldn't setup %s interrupt (irq=%d): %d\n",
+			    dd->pcidev->msi_enabled ?  "MSI" : "INTx",
+			    pci_irq_vector(dd->pcidev, 0), ret);
 }
 
 /**
@@ -3302,16 +3287,12 @@ static int qib_7220_intr_fallback(struct qib_devdata *dd)
 		return 0;
 
 	qib_devinfo(dd->pcidev,
-		"MSI interrupt not detected, trying INTx interrupts\n");
-	qib_7220_free_irq(dd);
-	qib_enable_intx(dd);
-	/*
-	 * Some newer kernels require free_irq before disable_msi,
-	 * and irq can be changed during disable and INTx enable
-	 * and we need to therefore use the pcidev->irq value,
-	 * not our saved MSI value.
-	 */
-	dd->cspec->irq = dd->pcidev->irq;
+		    "MSI interrupt not detected, trying INTx interrupts\n");
+
+	qib_free_irq(dd);
+	dd->msi_lo = 0;
+	if (pci_alloc_irq_vectors(dd->pcidev, 1, 1, PCI_IRQ_LEGACY) < 0)
+		qib_dev_err(dd, "Failed to enable INTx\n");
 	qib_setup_7220_interrupt(dd);
 	return 1;
 }
@@ -4535,7 +4516,7 @@ struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *pdev,
 	dd->f_bringup_serdes    = qib_7220_bringup_serdes;
 	dd->f_cleanup           = qib_setup_7220_cleanup;
 	dd->f_clear_tids        = qib_7220_clear_tids;
-	dd->f_free_irq          = qib_7220_free_irq;
+	dd->f_free_irq          = qib_free_irq;
 	dd->f_get_base_info     = qib_7220_get_base_info;
 	dd->f_get_msgheader     = qib_7220_get_msgheader;
 	dd->f_getsendbuf        = qib_7220_getsendbuf;
@@ -4618,9 +4599,6 @@ struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *pdev,
 		qib_dev_err(dd,
 			"Failed to setup PCIe or interrupts; continuing anyway\n");
 
-	/* save IRQ for possible later use */
-	dd->cspec->irq = pdev->irq;
-
 	if (qib_read_kreg64(dd, kr_hwerrstatus) &
 	    QLOGIC_IB_HWE_SERDESPLLFAILED)
 		qib_write_kreg(dd, kr_hwerrclear,