From 931bc0d91639f8fbf336332aa443705004ecf61d Mon Sep 17 00:00:00 2001
From: Yuval Shaia <yuval.shaia@oracle.com>
Date: Wed, 6 Sep 2017 13:15:50 +0300
Subject: IB: Move PCI dependency from root KConfig to HW's KConfigs

No reason to have dependency on PCI for the entire infiniband stack so
move it to KConfig of only the drivers that actually using PCI.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---
 drivers/infiniband/hw/qib/Kconfig | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers/infiniband/hw/qib')

diff --git a/drivers/infiniband/hw/qib/Kconfig b/drivers/infiniband/hw/qib/Kconfig
index e0fdb9201423..cb06314a2ae2 100644
--- a/drivers/infiniband/hw/qib/Kconfig
+++ b/drivers/infiniband/hw/qib/Kconfig
@@ -1,6 +1,7 @@
 config INFINIBAND_QIB
 	tristate "Intel PCIe HCA support"
 	depends on 64BIT && INFINIBAND_RDMAVT
+	depends on PCI
 	---help---
 	This is a low-level driver for Intel PCIe QLE InfiniBand host
 	channel adapters.  This driver does not support the Intel
-- 
cgit v1.2.3-59-g8ed1b


From c4bc61568048d6764d8527d76dd8d356619267d2 Mon Sep 17 00:00:00 2001
From: "Michael J. Ruhl" <michael.j.ruhl@intel.com>
Date: Tue, 26 Sep 2017 07:00:24 -0700
Subject: 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>
---
 drivers/infiniband/hw/qib/qib.h         |   8 +-
 drivers/infiniband/hw/qib/qib_7220.h    |   1 -
 drivers/infiniband/hw/qib/qib_iba6120.c |  35 ++-----
 drivers/infiniband/hw/qib/qib_iba7220.c |  52 +++--------
 drivers/infiniband/hw/qib/qib_iba7322.c | 158 +++++++++++++-------------------
 drivers/infiniband/hw/qib/qib_pcie.c    | 125 +++++++------------------
 6 files changed, 120 insertions(+), 259 deletions(-)

(limited to 'drivers/infiniband/hw/qib')

diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index f9e1c69603a5..1167a9c1776b 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -443,14 +443,12 @@ struct qib_irq_notify;
 #endif
 
 struct qib_msix_entry {
-	int irq;
 	void *arg;
 #ifdef CONFIG_INFINIBAND_QIB_DCA
 	int dca;
 	int rcv;
 	struct qib_irq_notify *notifier;
 #endif
-	char name[MAX_NAME_SIZE];
 	cpumask_var_t mask;
 };
 
@@ -1434,10 +1432,8 @@ int qib_pcie_ddinit(struct qib_devdata *, struct pci_dev *,
 		    const struct pci_device_id *);
 void qib_pcie_ddcleanup(struct qib_devdata *);
 int qib_pcie_params(struct qib_devdata *dd, u32 minw, u32 *nent);
-int qib_reinit_intr(struct qib_devdata *);
-void qib_enable_intx(struct qib_devdata *dd);
-void qib_nomsi(struct qib_devdata *);
-void qib_nomsix(struct qib_devdata *);
+void qib_free_irq(struct qib_devdata *dd);
+int qib_reinit_intr(struct qib_devdata *dd);
 void qib_pcie_getcmd(struct qib_devdata *, u16 *, u8 *, u8 *);
 void qib_pcie_reenable(struct qib_devdata *, u16, u8, u8);
 /* interrupts for device */
diff --git a/drivers/infiniband/hw/qib/qib_7220.h b/drivers/infiniband/hw/qib/qib_7220.h
index a5356cb4252e..4ec3dc1fbfb4 100644
--- a/drivers/infiniband/hw/qib/qib_7220.h
+++ b/drivers/infiniband/hw/qib/qib_7220.h
@@ -67,7 +67,6 @@ struct qib_chip_specific {
 	u32 lastbuf_for_pio;
 	u32 updthresh; /* current AvailUpdThld */
 	u32 updthresh_dflt; /* default AvailUpdThld */
-	int irq;
 	u8 presets_needed;
 	u8 relock_timer_active;
 	char emsgbuf[128];
diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index 3259a60e4f4f..c4a4c57e0f0a 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/drivers/infiniband/hw/qib/qib_iba6120.c
@@ -245,7 +245,6 @@ struct qib_chip_specific {
 	u64 iblnkerrsnap;
 	u64 ibcctrl; /* shadow for kr_ibcctrl */
 	u32 lastlinkrecov; /* link recovery issue */
-	int irq;
 	u32 cntrnamelen;
 	u32 portcntrnamelen;
 	u32 ncntrs;
@@ -1485,15 +1484,6 @@ static void qib_6120_setup_setextled(struct qib_pportdata *ppd, u32 on)
 	spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
 }
 
-static void qib_6120_free_irq(struct qib_devdata *dd)
-{
-	if (dd->cspec->irq) {
-		free_irq(dd->cspec->irq, dd);
-		dd->cspec->irq = 0;
-	}
-	qib_nomsi(dd);
-}
-
 /**
  * qib_6120_setup_cleanup - clean up any per-chip chip-specific stuff
  * @dd: the qlogic_ib device
@@ -1502,7 +1492,7 @@ static void qib_6120_free_irq(struct qib_devdata *dd)
 */
 static void qib_6120_setup_cleanup(struct qib_devdata *dd)
 {
-	qib_6120_free_irq(dd);
+	qib_free_irq(dd);
 	kfree(dd->cspec->cntrs);
 	kfree(dd->cspec->portcntrs);
 	if (dd->cspec->dummy_hdrq) {
@@ -1706,6 +1696,8 @@ bail:
  */
 static void qib_setup_6120_interrupt(struct qib_devdata *dd)
 {
+	int ret;
+
 	/*
 	 * If the chip supports added error indication via GPIO pins,
 	 * enable interrupts on those bits so the interrupt routine
@@ -1719,19 +1711,12 @@ static void qib_setup_6120_interrupt(struct qib_devdata *dd)
 		qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
 	}
 
-	if (!dd->cspec->irq)
+	ret = pci_request_irq(dd->pcidev, 0, qib_6120intr, NULL, dd,
+			      QIB_DRV_NAME);
+	if (ret)
 		qib_dev_err(dd,
-			"irq is 0, BIOS error?  Interrupts won't work\n");
-	else {
-		int ret;
-
-		ret = request_irq(dd->cspec->irq, qib_6120intr, 0,
-				  QIB_DRV_NAME, dd);
-		if (ret)
-			qib_dev_err(dd,
-				"Couldn't setup interrupt (irq=%d): %d\n",
-				dd->cspec->irq, ret);
-	}
+			    "Couldn't setup interrupt (irq=%d): %d\n",
+			    pci_irq_vector(dd->pcidev, 0), ret);
 }
 
 /**
@@ -3490,7 +3475,7 @@ struct qib_devdata *qib_init_iba6120_funcs(struct pci_dev *pdev,
 	dd->f_bringup_serdes    = qib_6120_bringup_serdes;
 	dd->f_cleanup           = qib_6120_setup_cleanup;
 	dd->f_clear_tids        = qib_6120_clear_tids;
-	dd->f_free_irq          = qib_6120_free_irq;
+	dd->f_free_irq          = qib_free_irq;
 	dd->f_get_base_info     = qib_6120_get_base_info;
 	dd->f_get_msgheader     = qib_6120_get_msgheader;
 	dd->f_getsendbuf        = qib_6120_getsendbuf;
@@ -3559,8 +3544,6 @@ struct qib_devdata *qib_init_iba6120_funcs(struct pci_dev *pdev,
 	if (qib_pcie_params(dd, 8, NULL))
 		qib_dev_err(dd,
 			"Failed to setup PCIe or interrupts; continuing anyway\n");
-	dd->cspec->irq = pdev->irq; /* save IRQ */
-
 	/* clear diagctrl register, in case diags were running and crashed */
 	qib_write_kreg(dd, kr_hwdiagctrl, 0);
 
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,
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 14cadf6d6214..4d02cffe4e03 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -553,7 +553,6 @@ struct qib_chip_specific {
 	u32 updthresh; /* current AvailUpdThld */
 	u32 updthresh_dflt; /* default AvailUpdThld */
 	u32 r1;
-	int irq;
 	u32 num_msix_entries;
 	u32 sdmabufcnt;
 	u32 lastbuf_for_pio;
@@ -756,10 +755,8 @@ static void check_7322_rxe_status(struct qib_pportdata *);
 static u32 __iomem *qib_7322_getsendbuf(struct qib_pportdata *, u64, u32 *);
 #ifdef CONFIG_INFINIBAND_QIB_DCA
 static void qib_setup_dca(struct qib_devdata *dd);
-static void setup_dca_notifier(struct qib_devdata *dd,
-			       struct qib_msix_entry *m);
-static void reset_dca_notifier(struct qib_devdata *dd,
-			       struct qib_msix_entry *m);
+static void setup_dca_notifier(struct qib_devdata *dd, int msixnum);
+static void reset_dca_notifier(struct qib_devdata *dd, int msixnum);
 #endif
 
 /**
@@ -2778,7 +2775,7 @@ static void qib_setup_dca(struct qib_devdata *dd)
 		qib_write_kreg(dd, KREG_IDX(DCACtrlB) + i,
 			       cspec->dca_rcvhdr_ctrl[i]);
 	for (i = 0; i < cspec->num_msix_entries; i++)
-		setup_dca_notifier(dd, &cspec->msix_entries[i]);
+		setup_dca_notifier(dd, i);
 }
 
 static void qib_irq_notifier_notify(struct irq_affinity_notify *notify,
@@ -2820,49 +2817,41 @@ static void qib_irq_notifier_release(struct kref *ref)
 }
 #endif
 
-/*
- * Disable MSIx interrupt if enabled, call generic MSIx code
- * to cleanup, and clear pending MSIx interrupts.
- * Used for fallback to INTx, after reset, and when MSIx setup fails.
- */
-static void qib_7322_nomsix(struct qib_devdata *dd)
+static void qib_7322_free_irq(struct qib_devdata *dd)
 {
 	u64 intgranted;
-	int n;
+	int i;
 
 	dd->cspec->main_int_mask = ~0ULL;
-	n = dd->cspec->num_msix_entries;
-	if (n) {
-		int i;
 
-		dd->cspec->num_msix_entries = 0;
-		for (i = 0; i < n; i++) {
+	for (i = 0; i < dd->cspec->num_msix_entries; i++) {
+		/* only free IRQs that were allocated */
+		if (dd->cspec->msix_entries[i].arg) {
 #ifdef CONFIG_INFINIBAND_QIB_DCA
-			reset_dca_notifier(dd, &dd->cspec->msix_entries[i]);
+			reset_dca_notifier(dd, i);
 #endif
-			irq_set_affinity_hint(
-				dd->cspec->msix_entries[i].irq, NULL);
+			irq_set_affinity_hint(pci_irq_vector(dd->pcidev, i),
+					      NULL);
 			free_cpumask_var(dd->cspec->msix_entries[i].mask);
-			free_irq(dd->cspec->msix_entries[i].irq,
-				 dd->cspec->msix_entries[i].arg);
+			pci_free_irq(dd->pcidev, i,
+				     dd->cspec->msix_entries[i].arg);
 		}
-		qib_nomsix(dd);
 	}
+
+	/* If num_msix_entries was 0, disable the INTx IRQ */
+	if (!dd->cspec->num_msix_entries)
+		pci_free_irq(dd->pcidev, 0, dd);
+	else
+		dd->cspec->num_msix_entries = 0;
+
+	pci_free_irq_vectors(dd->pcidev);
+
 	/* make sure no MSIx interrupts are left pending */
 	intgranted = qib_read_kreg64(dd, kr_intgranted);
 	if (intgranted)
 		qib_write_kreg(dd, kr_intgranted, intgranted);
 }
 
-static void qib_7322_free_irq(struct qib_devdata *dd)
-{
-	if (dd->cspec->irq) {
-		free_irq(dd->cspec->irq, dd);
-		dd->cspec->irq = 0;
-	}
-	qib_7322_nomsix(dd);
-}
-
 static void qib_setup_7322_cleanup(struct qib_devdata *dd)
 {
 	int i;
@@ -3329,22 +3318,20 @@ static irqreturn_t sdma_cleanup_intr(int irq, void *data)
 
 #ifdef CONFIG_INFINIBAND_QIB_DCA
 
-static void reset_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m)
+static void reset_dca_notifier(struct qib_devdata *dd, int msixnum)
 {
-	if (!m->dca)
+	if (!dd->cspec->msix_entries[msixnum].dca)
 		return;
-	qib_devinfo(dd->pcidev,
-		"Disabling notifier on HCA %d irq %d\n",
-		dd->unit,
-		m->irq);
-	irq_set_affinity_notifier(
-		m->irq,
-		NULL);
-	m->notifier = NULL;
+
+	qib_devinfo(dd->pcidev, "Disabling notifier on HCA %d irq %d\n",
+		    dd->unit, pci_irq_vector(dd->pcidev, msixnum));
+	irq_set_affinity_notifier(pci_irq_vector(dd->pcidev, msixnum), NULL);
+	dd->cspec->msix_entries[msixnum].notifier = NULL;
 }
 
-static void setup_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m)
+static void setup_dca_notifier(struct qib_devdata *dd, int msixnum)
 {
+	struct qib_msix_entry *m = &dd->cspec->msix_entries[msixnum];
 	struct qib_irq_notify *n;
 
 	if (!m->dca)
@@ -3354,7 +3341,7 @@ static void setup_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m)
 		int ret;
 
 		m->notifier = n;
-		n->notify.irq = m->irq;
+		n->notify.irq = pci_irq_vector(dd->pcidev, msixnum);
 		n->notify.notify = qib_irq_notifier_notify;
 		n->notify.release = qib_irq_notifier_release;
 		n->arg = m->arg;
@@ -3415,22 +3402,17 @@ static void qib_setup_7322_interrupt(struct qib_devdata *dd, int clearpend)
 	if (!dd->cspec->num_msix_entries) {
 		/* Try to get INTx interrupt */
 try_intx:
-		if (!dd->pcidev->irq) {
-			qib_dev_err(dd,
-				"irq is 0, BIOS error?  Interrupts won't work\n");
-			goto bail;
-		}
-		ret = request_irq(dd->pcidev->irq, qib_7322intr,
-				  IRQF_SHARED, QIB_DRV_NAME, dd);
+		ret = pci_request_irq(dd->pcidev, 0, qib_7322intr, NULL, dd,
+				      QIB_DRV_NAME);
 		if (ret) {
-			qib_dev_err(dd,
+			qib_dev_err(
+				dd,
 				"Couldn't setup INTx interrupt (irq=%d): %d\n",
-				dd->pcidev->irq, ret);
-			goto bail;
+				pci_irq_vector(dd->pcidev, 0), ret);
+			return;
 		}
-		dd->cspec->irq = dd->pcidev->irq;
 		dd->cspec->main_int_mask = ~0ULL;
-		goto bail;
+		return;
 	}
 
 	/* Try to get MSIx interrupts */
@@ -3458,10 +3440,6 @@ try_intx:
 #ifdef CONFIG_INFINIBAND_QIB_DCA
 		int dca = 0;
 #endif
-
-		dd->cspec->msix_entries[msixnum].
-			name[sizeof(dd->cspec->msix_entries[msixnum].name) - 1]
-			= '\0';
 		if (i < ARRAY_SIZE(irq_table)) {
 			if (irq_table[i].port) {
 				/* skip if for a non-configured port */
@@ -3475,11 +3453,10 @@ try_intx:
 #endif
 			lsb = irq_table[i].lsb;
 			handler = irq_table[i].handler;
-			snprintf(dd->cspec->msix_entries[msixnum].name,
-				sizeof(dd->cspec->msix_entries[msixnum].name)
-				 - 1,
-				QIB_DRV_NAME "%d%s", dd->unit,
-				irq_table[i].name);
+			ret = pci_request_irq(dd->pcidev, msixnum, handler,
+					      NULL, arg, QIB_DRV_NAME "%d%s",
+					      dd->unit,
+					      irq_table[i].name);
 		} else {
 			unsigned ctxt;
 
@@ -3495,37 +3472,25 @@ try_intx:
 #endif
 			lsb = QIB_I_RCVAVAIL_LSB + ctxt;
 			handler = qib_7322pintr;
-			snprintf(dd->cspec->msix_entries[msixnum].name,
-				sizeof(dd->cspec->msix_entries[msixnum].name)
-				 - 1,
-				QIB_DRV_NAME "%d (kctx)", dd->unit);
+			ret = pci_request_irq(dd->pcidev, msixnum, handler,
+					      NULL, arg,
+					      QIB_DRV_NAME "%d (kctx)",
+					      dd->unit);
 		}
 
-		dd->cspec->msix_entries[msixnum].irq = pci_irq_vector(
-			dd->pcidev, msixnum);
-		if (dd->cspec->msix_entries[msixnum].irq < 0) {
-			qib_dev_err(dd,
-				    "Couldn't get MSIx irq (vec=%d): %d\n",
-				    msixnum,
-				    dd->cspec->msix_entries[msixnum].irq);
-			qib_7322_nomsix(dd);
-			goto try_intx;
-		}
-		ret = request_irq(dd->cspec->msix_entries[msixnum].irq,
-				  handler, 0,
-				  dd->cspec->msix_entries[msixnum].name,
-				  arg);
 		if (ret) {
 			/*
 			 * Shouldn't happen since the enable said we could
 			 * have as many as we are trying to setup here.
 			 */
 			qib_dev_err(dd,
-				"Couldn't setup MSIx interrupt (vec=%d, irq=%d): %d\n",
-				msixnum,
-				dd->cspec->msix_entries[msixnum].irq,
-				ret);
-			qib_7322_nomsix(dd);
+				    "Couldn't setup MSIx interrupt (vec=%d, irq=%d): %d\n",
+				    msixnum,
+				    pci_irq_vector(dd->pcidev, msixnum),
+				    ret);
+			qib_7322_free_irq(dd);
+			pci_alloc_irq_vectors(dd->pcidev, 1, 1,
+					      PCI_IRQ_LEGACY);
 			goto try_intx;
 		}
 		dd->cspec->msix_entries[msixnum].arg = arg;
@@ -3559,7 +3524,7 @@ try_intx:
 					dd->cspec->msix_entries[msixnum].mask);
 			}
 			irq_set_affinity_hint(
-				dd->cspec->msix_entries[msixnum].irq,
+				pci_irq_vector(dd->pcidev, msixnum),
 				dd->cspec->msix_entries[msixnum].mask);
 		}
 		msixnum++;
@@ -3570,7 +3535,6 @@ try_intx:
 	dd->cspec->main_int_mask = mask;
 	tasklet_init(&dd->error_tasklet, qib_error_tasklet,
 		(unsigned long)dd);
-bail:;
 }
 
 /**
@@ -3674,8 +3638,9 @@ static int qib_do_7322_reset(struct qib_devdata *dd)
 	/* no interrupts till re-initted */
 	qib_7322_set_intr_state(dd, 0);
 
+	qib_7322_free_irq(dd);
+
 	if (msix_entries) {
-		qib_7322_nomsix(dd);
 		/* can be up to 512 bytes, too big for stack */
 		msix_vecsave = kmalloc(2 * dd->cspec->num_msix_entries *
 			sizeof(u64), GFP_KERNEL);
@@ -3765,11 +3730,11 @@ static int qib_do_7322_reset(struct qib_devdata *dd)
 		write_7322_init_portregs(&dd->pport[i]);
 	write_7322_initregs(dd);
 
-	if (qib_pcie_params(dd, dd->lbus_width,
-			    &dd->cspec->num_msix_entries))
+	if (qib_pcie_params(dd, dd->lbus_width, &msix_entries))
 		qib_dev_err(dd,
 			"Reset failed to setup PCIe or interrupts; continuing anyway\n");
 
+	dd->cspec->num_msix_entries = msix_entries;
 	qib_setup_7322_interrupt(dd, 1);
 
 	for (i = 0; i < dd->num_pports; ++i) {
@@ -5197,8 +5162,9 @@ static int qib_7322_intr_fallback(struct qib_devdata *dd)
 
 	qib_devinfo(dd->pcidev,
 		"MSIx interrupt not detected, trying INTx interrupts\n");
-	qib_7322_nomsix(dd);
-	qib_enable_intx(dd);
+	qib_7322_free_irq(dd);
+	if (pci_alloc_irq_vectors(dd->pcidev, 1, 1, PCI_IRQ_LEGACY) < 0)
+		qib_dev_err(dd, "Failed to enable INTx\n");
 	qib_setup_7322_interrupt(dd, 0);
 	return 1;
 }
diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c
index d90403e31a9d..6f4cc268926c 100644
--- a/drivers/infiniband/hw/qib/qib_pcie.c
+++ b/drivers/infiniband/hw/qib/qib_pcie.c
@@ -193,7 +193,7 @@ void qib_pcie_ddcleanup(struct qib_devdata *dd)
  * chip reset (the kernel PCI infrastructure doesn't yet handle that
  * correctly.
  */
-static void qib_msi_setup(struct qib_devdata *dd, int pos)
+static void qib_cache_msi_info(struct qib_devdata *dd, int pos)
 {
 	struct pci_dev *pdev = dd->pcidev;
 	u16 control;
@@ -208,64 +208,39 @@ static void qib_msi_setup(struct qib_devdata *dd, int pos)
 			     &dd->msi_data);
 }
 
-static int qib_allocate_irqs(struct qib_devdata *dd, u32 maxvec)
-{
-	unsigned int flags = PCI_IRQ_LEGACY;
-
-	/* Check our capabilities */
-	if (dd->pcidev->msix_cap) {
-		flags |= PCI_IRQ_MSIX;
-	} else {
-		if (dd->pcidev->msi_cap) {
-			flags |= PCI_IRQ_MSI;
-			/* Get msi_lo and msi_hi */
-			qib_msi_setup(dd, dd->pcidev->msi_cap);
-		}
-	}
-
-	if (!(flags & (PCI_IRQ_MSIX | PCI_IRQ_MSI)))
-		qib_dev_err(dd, "No PCI MSI or MSIx capability!\n");
-
-	return pci_alloc_irq_vectors(dd->pcidev, 1, maxvec, flags);
-}
-
 int qib_pcie_params(struct qib_devdata *dd, u32 minw, u32 *nent)
 {
 	u16 linkstat, speed;
 	int nvec;
 	int maxvec;
-	int ret = 0;
+	unsigned int flags = PCI_IRQ_MSIX | PCI_IRQ_MSI;
 
 	if (!pci_is_pcie(dd->pcidev)) {
 		qib_dev_err(dd, "Can't find PCI Express capability!\n");
 		/* set up something... */
 		dd->lbus_width = 1;
 		dd->lbus_speed = 2500; /* Gen1, 2.5GHz */
-		ret = -1;
+		nvec = -1;
 		goto bail;
 	}
 
+	if (dd->flags & QIB_HAS_INTX)
+		flags |= PCI_IRQ_LEGACY;
 	maxvec = (nent && *nent) ? *nent : 1;
-	nvec = qib_allocate_irqs(dd, maxvec);
-	if (nvec < 0) {
-		ret = nvec;
+	nvec = pci_alloc_irq_vectors(dd->pcidev, 1, maxvec, flags);
+	if (nvec < 0)
 		goto bail;
-	}
 
 	/*
-	 * If nent exists, make sure to record how many vectors were allocated
+	 * If nent exists, make sure to record how many vectors were allocated.
+	 * If msix_enabled is false, return 0 so the fallback code works
+	 * correctly.
 	 */
-	if (nent) {
-		*nent = nvec;
+	if (nent)
+		*nent = !dd->pcidev->msix_enabled ? 0 : nvec;
 
-		/*
-		 * If we requested (nent) MSIX, but msix_enabled is not set,
-		 * pci_alloc_irq_vectors() enabled INTx.
-		 */
-		if (!dd->pcidev->msix_enabled)
-			qib_dev_err(dd,
-				    "no msix vectors allocated, using INTx\n");
-	}
+	if (dd->pcidev->msi_enabled)
+		qib_cache_msi_info(dd, dd->pcidev->msi_cap);
 
 	pcie_capability_read_word(dd->pcidev, PCI_EXP_LNKSTA, &linkstat);
 	/*
@@ -306,7 +281,21 @@ bail:
 	/* fill in string, even on errors */
 	snprintf(dd->lbus_info, sizeof(dd->lbus_info),
 		 "PCIe,%uMHz,x%u\n", dd->lbus_speed, dd->lbus_width);
-	return ret;
+	return nvec < 0 ? nvec : 0;
+}
+
+/**
+ * qib_free_irq - Cleanup INTx and MSI interrupts
+ * @dd: valid pointer to qib dev data
+ *
+ * Since cleanup for INTx and MSI interrupts is trivial, have a common
+ * routine.
+ *
+ */
+void qib_free_irq(struct qib_devdata *dd)
+{
+	pci_free_irq(dd->pcidev, 0, dd);
+	pci_free_irq_vectors(dd->pcidev);
 }
 
 /*
@@ -351,10 +340,10 @@ int qib_reinit_intr(struct qib_devdata *dd)
 			      dd->msi_data);
 	ret = 1;
 bail:
-	if (!ret && (dd->flags & QIB_HAS_INTX)) {
-		qib_enable_intx(dd);
+	qib_free_irq(dd);
+
+	if (!ret && (dd->flags & QIB_HAS_INTX))
 		ret = 1;
-	}
 
 	/* and now set the pci master bit again */
 	pci_set_master(dd->pcidev);
@@ -362,56 +351,6 @@ bail:
 	return ret;
 }
 
-/*
- * Disable msi interrupt if enabled, and clear msi_lo.
- * This is used primarily for the fallback to INTx, but
- * is also used in reinit after reset, and during cleanup.
- */
-void qib_nomsi(struct qib_devdata *dd)
-{
-	dd->msi_lo = 0;
-	pci_free_irq_vectors(dd->pcidev);
-}
-
-/*
- * Same as qib_nosmi, but for MSIx.
- */
-void qib_nomsix(struct qib_devdata *dd)
-{
-	pci_free_irq_vectors(dd->pcidev);
-}
-
-/*
- * Similar to pci_intx(pdev, 1), except that we make sure
- * msi(x) is off.
- */
-void qib_enable_intx(struct qib_devdata *dd)
-{
-	u16 cw, new;
-	int pos;
-	struct pci_dev *pdev = dd->pcidev;
-
-	if (pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY) < 0)
-		qib_dev_err(dd,	"Failed to enable INTx\n");
-
-	pos = pdev->msi_cap;
-	if (pos) {
-		/* then turn off MSI */
-		pci_read_config_word(pdev, pos + PCI_MSI_FLAGS, &cw);
-		new = cw & ~PCI_MSI_FLAGS_ENABLE;
-		if (new != cw)
-			pci_write_config_word(pdev, pos + PCI_MSI_FLAGS, new);
-	}
-	pos = pdev->msix_cap;
-	if (pos) {
-		/* then turn off MSIx */
-		pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, &cw);
-		new = cw & ~PCI_MSIX_FLAGS_ENABLE;
-		if (new != cw)
-			pci_write_config_word(pdev, pos + PCI_MSIX_FLAGS, new);
-	}
-}
-
 /*
  * These two routines are helper routines for the device reset code
  * to move all the pcie code out of the chip-specific driver code.
-- 
cgit v1.2.3-59-g8ed1b


From e1ac263fcb58a63aed0d9a75d22e045f88a53bb2 Mon Sep 17 00:00:00 2001
From: Himanshu Jha <himanshujha199640@gmail.com>
Date: Sun, 24 Sep 2017 17:21:07 +0530
Subject: IB/qib: Use setup_timer and mod_timer

Use setup_timer and mod_timer API instead of structure assignments.

This is done using Coccinelle and semantic patch used
for this as follows:

@@
expression x,y,z,a,b;
@@

-init_timer (&x);
+setup_timer (&x, y, z);
+mod_timer (&a, b);
-x.function = y;
-x.data = z;
-x.expires = b;
-add_timer(&a);

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---
 drivers/infiniband/hw/qib/qib_driver.c |  8 +++-----
 drivers/infiniband/hw/qib/qib_mad.c    | 10 ++++------
 2 files changed, 7 insertions(+), 11 deletions(-)

(limited to 'drivers/infiniband/hw/qib')

diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c
index 719906a9fd51..2314e8a9ca3f 100644
--- a/drivers/infiniband/hw/qib/qib_driver.c
+++ b/drivers/infiniband/hw/qib/qib_driver.c
@@ -735,11 +735,9 @@ void qib_set_led_override(struct qib_pportdata *ppd, unsigned int val)
 	 */
 	if (atomic_inc_return(&ppd->led_override_timer_active) == 1) {
 		/* Need to start timer */
-		init_timer(&ppd->led_override_timer);
-		ppd->led_override_timer.function = qib_run_led_override;
-		ppd->led_override_timer.data = (unsigned long) ppd;
-		ppd->led_override_timer.expires = jiffies + 1;
-		add_timer(&ppd->led_override_timer);
+		setup_timer(&ppd->led_override_timer, qib_run_led_override,
+			    (unsigned long)ppd);
+		mod_timer(&ppd->led_override_timer, jiffies + 1);
 	} else {
 		if (ppd->led_override_vals[0] || ppd->led_override_vals[1])
 			mod_timer(&ppd->led_override_timer, jiffies + 1);
diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c
index 82d9da9b6997..1237952c144e 100644
--- a/drivers/infiniband/hw/qib/qib_mad.c
+++ b/drivers/infiniband/hw/qib/qib_mad.c
@@ -2478,12 +2478,10 @@ void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx)
 
 	/* Initialize xmit_wait structure */
 	dd->pport[port_idx].cong_stats.counter = 0;
-	init_timer(&dd->pport[port_idx].cong_stats.timer);
-	dd->pport[port_idx].cong_stats.timer.function = xmit_wait_timer_func;
-	dd->pport[port_idx].cong_stats.timer.data =
-		(unsigned long)(&dd->pport[port_idx]);
-	dd->pport[port_idx].cong_stats.timer.expires = 0;
-	add_timer(&dd->pport[port_idx].cong_stats.timer);
+	setup_timer(&dd->pport[port_idx].cong_stats.timer,
+		    xmit_wait_timer_func,
+		    (unsigned long)(&dd->pport[port_idx]));
+	mod_timer(&dd->pport[port_idx].cong_stats.timer, 0);
 }
 
 void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx)
-- 
cgit v1.2.3-59-g8ed1b


From 66392615dcf92558d5f5b17d01aa5ffa212d8959 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bart.vanassche@wdc.com>
Date: Wed, 11 Oct 2017 10:49:20 -0700
Subject: IB/qib: Remove remaining code related to writing the EEPROM

Due to removal of the EEPROM writing code, the qib_inc_eeprom_err()
macro became a no-op. Remove the code that calls it. Since that
change removes all code that reads the eep_st_masks array, also
remove the code that updates that array and the array itself.

References: commit 18c0b82a3e45 ("IB/qib: Do not write EEPROM")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Mike Marciniszyn <infinipath@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---
 drivers/infiniband/hw/qib/qib.h         | 18 ------------------
 drivers/infiniband/hw/qib/qib_iba6120.c | 25 -------------------------
 drivers/infiniband/hw/qib/qib_iba7220.c | 20 --------------------
 drivers/infiniband/hw/qib/qib_iba7322.c |  6 +-----
 4 files changed, 1 insertion(+), 68 deletions(-)

(limited to 'drivers/infiniband/hw/qib')

diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index 1167a9c1776b..689f5d001892 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -101,18 +101,6 @@ extern const struct pci_error_handlers qib_pci_err_handler;
  */
 #define QIB_TRAFFIC_ACTIVE_THRESHOLD (2000)
 
-/*
- * Struct used to indicate which errors are logged in each of the
- * error-counters that are logged to EEPROM. A counter is incremented
- * _once_ (saturating at 255) for each event with any bits set in
- * the error or hwerror register masks below.
- */
-#define QIB_EEP_LOG_CNT (4)
-struct qib_eep_log_mask {
-	u64 errs_to_log;
-	u64 hwerrs_to_log;
-};
-
 /*
  * Below contains all data related to a single context (formerly called port).
  */
@@ -1079,11 +1067,6 @@ struct qib_devdata {
 	/* control high-level access to EEPROM */
 	struct mutex eep_lock;
 	uint64_t traffic_wds;
-	/*
-	 * masks for which bits of errs, hwerrs that cause
-	 * each of the counters to increment.
-	 */
-	struct qib_eep_log_mask eep_st_masks[QIB_EEP_LOG_CNT];
 	struct qib_diag_client *diag_client;
 	spinlock_t qib_diag_trans_lock; /* protect diag observer ops */
 	struct diag_observer_list_elt *diag_observer_list;
@@ -1297,7 +1280,6 @@ int qib_twsi_blk_rd(struct qib_devdata *dd, int dev, int addr, void *buffer,
 int qib_twsi_blk_wr(struct qib_devdata *dd, int dev, int addr,
 		    const void *buffer, int len);
 void qib_get_eeprom_info(struct qib_devdata *);
-#define qib_inc_eeprom_err(dd, eidx, incr)
 void qib_dump_lookup_output_queue(struct qib_devdata *);
 void qib_force_pio_avail_update(struct qib_devdata *);
 void qib_clear_symerror_on_linkup(unsigned long opaque);
diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index c4a4c57e0f0a..3c5adfa104a0 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/drivers/infiniband/hw/qib/qib_iba6120.c
@@ -748,7 +748,6 @@ static void qib_handle_6120_hwerrors(struct qib_devdata *dd, char *msg,
 	u32 bits, ctrl;
 	int isfatal = 0;
 	char *bitsmsg;
-	int log_idx;
 
 	hwerrs = qib_read_kreg64(dd, kr_hwerrstatus);
 	if (!hwerrs)
@@ -770,11 +769,6 @@ static void qib_handle_6120_hwerrors(struct qib_devdata *dd, char *msg,
 
 	hwerrs &= dd->cspec->hwerrmask;
 
-	/* We log some errors to EEPROM, check if we have any of those. */
-	for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
-		if (hwerrs & dd->eep_st_masks[log_idx].hwerrs_to_log)
-			qib_inc_eeprom_err(dd, log_idx, 1);
-
 	/*
 	 * Make sure we get this much out, unless told to be quiet,
 	 * or it's occurred within the last 5 seconds.
@@ -1004,7 +998,6 @@ static void handle_6120_errors(struct qib_devdata *dd, u64 errs)
 	char *msg;
 	u64 ignore_this_time = 0;
 	u64 iserr = 0;
-	int log_idx;
 	struct qib_pportdata *ppd = dd->pport;
 	u64 mask;
 
@@ -1015,10 +1008,6 @@ static void handle_6120_errors(struct qib_devdata *dd, u64 errs)
 	/* do these first, they are most important */
 	if (errs & ERR_MASK(HardwareErr))
 		qib_handle_6120_hwerrors(dd, msg, sizeof(dd->cspec->emsgbuf));
-	else
-		for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
-			if (errs & dd->eep_st_masks[log_idx].errs_to_log)
-				qib_inc_eeprom_err(dd, log_idx, 1);
 
 	if (errs & ~IB_E_BITSEXTANT)
 		qib_dev_err(dd,
@@ -3227,20 +3216,6 @@ static int init_6120_variables(struct qib_devdata *dd)
 	if (qib_unordered_wc())
 		dd->flags |= QIB_PIO_FLUSH_WC;
 
-	/*
-	 * EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity.
-	 * 2 is Some Misc, 3 is reserved for future.
-	 */
-	dd->eep_st_masks[0].hwerrs_to_log = HWE_MASK(TXEMemParityErr);
-
-	/* Ignore errors in PIO/PBC on systems with unordered write-combining */
-	if (qib_unordered_wc())
-		dd->eep_st_masks[0].hwerrs_to_log &= ~TXE_PIO_PARITY;
-
-	dd->eep_st_masks[1].hwerrs_to_log = HWE_MASK(RXEMemParityErr);
-
-	dd->eep_st_masks[2].errs_to_log = ERR_MASK(ResetNegated);
-
 	ret = qib_init_pportdata(ppd, dd, 0, 1);
 	if (ret)
 		goto bail;
diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index 78ce79be4120..ceb2259a5efb 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/drivers/infiniband/hw/qib/qib_iba7220.c
@@ -1094,7 +1094,6 @@ static void handle_7220_errors(struct qib_devdata *dd, u64 errs)
 	char *msg;
 	u64 ignore_this_time = 0;
 	u64 iserr = 0;
-	int log_idx;
 	struct qib_pportdata *ppd = dd->pport;
 	u64 mask;
 
@@ -1105,10 +1104,6 @@ static void handle_7220_errors(struct qib_devdata *dd, u64 errs)
 	/* do these first, they are most important */
 	if (errs & ERR_MASK(HardwareErr))
 		qib_7220_handle_hwerrors(dd, msg, sizeof(dd->cspec->emsgbuf));
-	else
-		for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
-			if (errs & dd->eep_st_masks[log_idx].errs_to_log)
-				qib_inc_eeprom_err(dd, log_idx, 1);
 
 	if (errs & QLOGIC_IB_E_SDMAERRS)
 		sdma_7220_errors(ppd, errs);
@@ -1302,7 +1297,6 @@ static void qib_7220_handle_hwerrors(struct qib_devdata *dd, char *msg,
 	u32 bits, ctrl;
 	int isfatal = 0;
 	char *bitsmsg;
-	int log_idx;
 
 	hwerrs = qib_read_kreg64(dd, kr_hwerrstatus);
 	if (!hwerrs)
@@ -1326,10 +1320,6 @@ static void qib_7220_handle_hwerrors(struct qib_devdata *dd, char *msg,
 
 	hwerrs &= dd->cspec->hwerrmask;
 
-	/* We log some errors to EEPROM, check if we have any of those. */
-	for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
-		if (hwerrs & dd->eep_st_masks[log_idx].hwerrs_to_log)
-			qib_inc_eeprom_err(dd, log_idx, 1);
 	if (hwerrs & ~(TXEMEMPARITYERR_PIOBUF | TXEMEMPARITYERR_PIOPBC |
 		       RXE_PARITY))
 		qib_devinfo(dd->pcidev,
@@ -4016,16 +4006,6 @@ static int qib_init_7220_variables(struct qib_devdata *dd)
 	dd->flags |= qib_special_trigger ?
 		QIB_USE_SPCL_TRIG : QIB_HAS_SEND_DMA;
 
-	/*
-	 * EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity.
-	 * 2 is Some Misc, 3 is reserved for future.
-	 */
-	dd->eep_st_masks[0].hwerrs_to_log = HWE_MASK(TXEMemParityErr);
-
-	dd->eep_st_masks[1].hwerrs_to_log = HWE_MASK(RXEMemParityErr);
-
-	dd->eep_st_masks[2].errs_to_log = ERR_MASK(ResetNegated);
-
 	init_waitqueue_head(&cpspec->autoneg_wait);
 	INIT_DELAYED_WORK(&cpspec->autoneg_work, autoneg_7220_work);
 
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 4d02cffe4e03..77217fae9c06 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -1644,7 +1644,6 @@ static noinline void handle_7322_errors(struct qib_devdata *dd)
 	u64 iserr = 0;
 	u64 errs;
 	u64 mask;
-	int log_idx;
 
 	qib_stats.sps_errints++;
 	errs = qib_read_kreg64(dd, kr_errstatus);
@@ -1662,10 +1661,7 @@ static noinline void handle_7322_errors(struct qib_devdata *dd)
 	if (errs & QIB_E_HARDWARE) {
 		*msg = '\0';
 		qib_7322_handle_hwerrors(dd, msg, sizeof(dd->cspec->emsgbuf));
-	} else
-		for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
-			if (errs & dd->eep_st_masks[log_idx].errs_to_log)
-				qib_inc_eeprom_err(dd, log_idx, 1);
+	}
 
 	if (errs & QIB_E_SPKTERRS) {
 		qib_disarm_7322_senderrbufs(dd->pport);
-- 
cgit v1.2.3-59-g8ed1b


From 658115b0909c48ab0228f4a0894ce3c0d98ca397 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bart.vanassche@wdc.com>
Date: Wed, 11 Oct 2017 10:49:21 -0700
Subject: IB/qib: Suppress gcc 7 fall-through complaints

Avoid that gcc 7 reports the following warning when building with W=1:

warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Mike Marciniszyn <infinipath@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---
 drivers/infiniband/hw/qib/qib_mad.c  | 1 +
 drivers/infiniband/hw/qib/qib_rc.c   | 2 +-
 drivers/infiniband/hw/qib/qib_sdma.c | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

(limited to 'drivers/infiniband/hw/qib')

diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c
index 1237952c144e..04367e0f6f9b 100644
--- a/drivers/infiniband/hw/qib/qib_mad.c
+++ b/drivers/infiniband/hw/qib/qib_mad.c
@@ -434,6 +434,7 @@ static int check_mkey(struct qib_ibport *ibp, struct ib_smp *smp, int mad_flags)
 			/* Bad mkey not a violation below level 2 */
 			if (ibp->rvp.mkeyprot < 2)
 				break;
+			/* fall through */
 		case IB_MGMT_METHOD_SET:
 		case IB_MGMT_METHOD_TRAP_REPRESS:
 			if (ibp->rvp.mkey_violations != 0xFFFF)
diff --git a/drivers/infiniband/hw/qib/qib_rc.c b/drivers/infiniband/hw/qib/qib_rc.c
index e9a91736b12d..8f5754fb8579 100644
--- a/drivers/infiniband/hw/qib/qib_rc.c
+++ b/drivers/infiniband/hw/qib/qib_rc.c
@@ -1869,7 +1869,7 @@ send_middle:
 		qp->r_rcv_len = 0;
 		if (opcode == OP(SEND_ONLY))
 			goto no_immediate_data;
-		/* FALLTHROUGH for SEND_ONLY_WITH_IMMEDIATE */
+		/* fall through -- for SEND_ONLY_WITH_IMMEDIATE */
 	case OP(SEND_LAST_WITH_IMMEDIATE):
 send_last_imm:
 		wc.ex.imm_data = ohdr->u.imm_data;
diff --git a/drivers/infiniband/hw/qib/qib_sdma.c b/drivers/infiniband/hw/qib/qib_sdma.c
index 891873b38a1e..c3690bd51582 100644
--- a/drivers/infiniband/hw/qib/qib_sdma.c
+++ b/drivers/infiniband/hw/qib/qib_sdma.c
@@ -808,7 +808,7 @@ void __qib_sdma_process_event(struct qib_pportdata *ppd,
 			 * bringing the link up with traffic active on
 			 * 7220, e.g. */
 			ss->go_s99_running = 1;
-			/* fall through and start dma engine */
+			/* fall through -- and start dma engine */
 		case qib_sdma_event_e10_go_hw_start:
 			/* This reference means the state machine is started */
 			sdma_get(&ppd->sdma_state);
-- 
cgit v1.2.3-59-g8ed1b


From 2055d1f067509e2dac75faf275a8ee59dcd2b97a Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bart.vanassche@wdc.com>
Date: Wed, 11 Oct 2017 10:49:22 -0700
Subject: IB/qib: Remove set-but-not-used variables

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Tested-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---
 drivers/infiniband/hw/qib/qib_diag.c     |  6 ------
 drivers/infiniband/hw/qib/qib_file_ops.c |  9 ---------
 drivers/infiniband/hw/qib/qib_iba6120.c  |  2 --
 drivers/infiniband/hw/qib/qib_iba7220.c  |  3 ---
 drivers/infiniband/hw/qib/qib_iba7322.c  | 15 ++++-----------
 drivers/infiniband/hw/qib/qib_mad.c      |  3 +--
 drivers/infiniband/hw/qib/qib_pcie.c     |  3 +--
 drivers/infiniband/hw/qib/qib_sd7220.c   |  2 --
 drivers/infiniband/hw/qib/qib_tx.c       |  4 ----
 drivers/infiniband/hw/qib/qib_verbs.c    |  3 +--
 10 files changed, 7 insertions(+), 43 deletions(-)

(limited to 'drivers/infiniband/hw/qib')

diff --git a/drivers/infiniband/hw/qib/qib_diag.c b/drivers/infiniband/hw/qib/qib_diag.c
index 775018b32b0d..a9377eee8734 100644
--- a/drivers/infiniband/hw/qib/qib_diag.c
+++ b/drivers/infiniband/hw/qib/qib_diag.c
@@ -761,7 +761,6 @@ static ssize_t qib_diag_read(struct file *fp, char __user *data,
 {
 	struct qib_diag_client *dc = fp->private_data;
 	struct qib_devdata *dd = dc->dd;
-	void __iomem *kreg_base;
 	ssize_t ret;
 
 	if (dc->pid != current->pid) {
@@ -769,8 +768,6 @@ static ssize_t qib_diag_read(struct file *fp, char __user *data,
 		goto bail;
 	}
 
-	kreg_base = dd->kregbase;
-
 	if (count == 0)
 		ret = 0;
 	else if ((count % 4) || (*off % 4))
@@ -838,7 +835,6 @@ static ssize_t qib_diag_write(struct file *fp, const char __user *data,
 {
 	struct qib_diag_client *dc = fp->private_data;
 	struct qib_devdata *dd = dc->dd;
-	void __iomem *kreg_base;
 	ssize_t ret;
 
 	if (dc->pid != current->pid) {
@@ -846,8 +842,6 @@ static ssize_t qib_diag_write(struct file *fp, const char __user *data,
 		goto bail;
 	}
 
-	kreg_base = dd->kregbase;
-
 	if (count == 0)
 		ret = 0;
 	else if ((count % 4) || (*off % 4))
diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c
index 9396c1807cc3..2d6a191afec0 100644
--- a/drivers/infiniband/hw/qib/qib_file_ops.c
+++ b/drivers/infiniband/hw/qib/qib_file_ops.c
@@ -696,15 +696,8 @@ static void qib_clean_part_key(struct qib_ctxtdata *rcd,
 			       struct qib_devdata *dd)
 {
 	int i, j, pchanged = 0;
-	u64 oldpkey;
 	struct qib_pportdata *ppd = rcd->ppd;
 
-	/* for debugging only */
-	oldpkey = (u64) ppd->pkeys[0] |
-		((u64) ppd->pkeys[1] << 16) |
-		((u64) ppd->pkeys[2] << 32) |
-		((u64) ppd->pkeys[3] << 48);
-
 	for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) {
 		if (!rcd->pkeys[i])
 			continue;
@@ -1817,7 +1810,6 @@ static int qib_close(struct inode *in, struct file *fp)
 	struct qib_devdata *dd;
 	unsigned long flags;
 	unsigned ctxt;
-	pid_t pid;
 
 	mutex_lock(&qib_mutex);
 
@@ -1859,7 +1851,6 @@ static int qib_close(struct inode *in, struct file *fp)
 	spin_lock_irqsave(&dd->uctxt_lock, flags);
 	ctxt = rcd->ctxt;
 	dd->rcd[ctxt] = NULL;
-	pid = rcd->pid;
 	rcd->pid = 0;
 	spin_unlock_irqrestore(&dd->uctxt_lock, flags);
 
diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index 3c5adfa104a0..3a0a28e10b86 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/drivers/infiniband/hw/qib/qib_iba6120.c
@@ -1903,7 +1903,6 @@ static void qib_6120_put_tid_2(struct qib_devdata *dd, u64 __iomem *tidptr,
 			       u32 type, unsigned long pa)
 {
 	u32 __iomem *tidp32 = (u32 __iomem *)tidptr;
-	u32 tidx;
 
 	if (!dd->kregbase)
 		return;
@@ -1927,7 +1926,6 @@ static void qib_6120_put_tid_2(struct qib_devdata *dd, u64 __iomem *tidptr,
 		else /* for now, always full 4KB page */
 			pa |= 2 << 29;
 	}
-	tidx = tidptr - dd->egrtidbase;
 	writel(pa, tidp32);
 	mmiowb();
 }
diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index ceb2259a5efb..d66d68e2cf24 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/drivers/infiniband/hw/qib/qib_iba7220.c
@@ -3514,7 +3514,6 @@ static void autoneg_7220_work(struct work_struct *work)
 {
 	struct qib_pportdata *ppd;
 	struct qib_devdata *dd;
-	u64 startms;
 	u32 i;
 	unsigned long flags;
 
@@ -3522,8 +3521,6 @@ static void autoneg_7220_work(struct work_struct *work)
 			    autoneg_work.work)->pportdata;
 	dd = ppd->dd;
 
-	startms = jiffies_to_msecs(jiffies);
-
 	/*
 	 * Busy wait for this first part, it should be at most a
 	 * few hundred usec, since we scheduled ourselves for 2msec.
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 77217fae9c06..b0413f9ecbe3 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -3431,7 +3431,6 @@ try_intx:
 	for (i = 0; msixnum < dd->cspec->num_msix_entries; i++) {
 		irq_handler_t handler;
 		void *arg;
-		u64 val;
 		int lsb, reg, sh;
 #ifdef CONFIG_INFINIBAND_QIB_DCA
 		int dca = 0;
@@ -3502,8 +3501,8 @@ try_intx:
 			mask &= ~(1ULL << lsb);
 			redirect[reg] |= ((u64) msixnum) << sh;
 		}
-		val = qib_read_kreg64(dd, 2 * msixnum + 1 +
-			(QIB_7322_MsixTable_OFFS / sizeof(u64)));
+		qib_read_kreg64(dd, 2 * msixnum + 1 +
+				(QIB_7322_MsixTable_OFFS / sizeof(u64)));
 		if (firstcpu < nr_cpu_ids &&
 			zalloc_cpumask_var(
 				&dd->cspec->msix_entries[msixnum].mask,
@@ -5358,16 +5357,11 @@ static void try_7322_autoneg(struct qib_pportdata *ppd)
 static void autoneg_7322_work(struct work_struct *work)
 {
 	struct qib_pportdata *ppd;
-	struct qib_devdata *dd;
-	u64 startms;
 	u32 i;
 	unsigned long flags;
 
 	ppd = container_of(work, struct qib_chippport_specific,
 			    autoneg_work.work)->ppd;
-	dd = ppd->dd;
-
-	startms = jiffies_to_msecs(jiffies);
 
 	/*
 	 * Busy wait for this first part, it should be at most a
@@ -7807,13 +7801,12 @@ static void ibsd_wr_allchans(struct qib_pportdata *ppd, int addr, unsigned data,
 {
 	struct qib_devdata *dd = ppd->dd;
 	int chan;
-	u32 rbc;
 
 	for (chan = 0; chan < SERDES_CHANS; ++chan) {
 		ahb_mod(dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)), addr,
 			data, mask);
-		rbc = ahb_mod(dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
-			      addr, 0, 0);
+		ahb_mod(dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)), addr,
+			0, 0);
 	}
 }
 
diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c
index 04367e0f6f9b..841312f60dfd 100644
--- a/drivers/infiniband/hw/qib/qib_mad.c
+++ b/drivers/infiniband/hw/qib/qib_mad.c
@@ -280,7 +280,7 @@ static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
 {
 	struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
 	struct qib_devdata *dd = dd_from_ibdev(ibdev);
-	u32 vendor, majrev, minrev;
+	u32 majrev, minrev;
 	unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */
 
 	/* GUID 0 is illegal */
@@ -303,7 +303,6 @@ static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev,
 	minrev = dd->minrev;
 	nip->revision = cpu_to_be32((majrev << 16) | minrev);
 	nip->local_port_num = port;
-	vendor = dd->vendorid;
 	nip->vendor_id[0] = QIB_SRC_OUI_1;
 	nip->vendor_id[1] = QIB_SRC_OUI_2;
 	nip->vendor_id[2] = QIB_SRC_OUI_3;
diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c
index 6f4cc268926c..5ac7b31c346b 100644
--- a/drivers/infiniband/hw/qib/qib_pcie.c
+++ b/drivers/infiniband/hw/qib/qib_pcie.c
@@ -397,7 +397,6 @@ MODULE_PARM_DESC(pcie_coalesce, "tune PCIe colescing on some Intel chipsets");
  */
 static void qib_tune_pcie_coalesce(struct qib_devdata *dd)
 {
-	int r;
 	struct pci_dev *parent;
 	u16 devid;
 	u32 mask, bits, val;
@@ -452,7 +451,7 @@ static void qib_tune_pcie_coalesce(struct qib_devdata *dd)
 	pci_read_config_dword(parent, 0x48, &val);
 	val &= ~mask;
 	val |= bits;
-	r = pci_write_config_dword(parent, 0x48, val);
+	pci_write_config_dword(parent, 0x48, val);
 }
 
 /*
diff --git a/drivers/infiniband/hw/qib/qib_sd7220.c b/drivers/infiniband/hw/qib/qib_sd7220.c
index c72775f27212..ad52f7ac620c 100644
--- a/drivers/infiniband/hw/qib/qib_sd7220.c
+++ b/drivers/infiniband/hw/qib/qib_sd7220.c
@@ -755,7 +755,6 @@ static int qib_sd7220_ram_xfer(struct qib_devdata *dd, int sdnum, u32 loc,
 	int addr;
 	int ret;
 	unsigned long flags;
-	const char *op;
 
 	/* Pick appropriate transaction reg and "Chip select" for this serdes */
 	switch (sdnum) {
@@ -775,7 +774,6 @@ static int qib_sd7220_ram_xfer(struct qib_devdata *dd, int sdnum, u32 loc,
 		return -1;
 	}
 
-	op = rd_notwr ? "Rd" : "Wr";
 	spin_lock_irqsave(&dd->cspec->sdepb_lock, flags);
 
 	owned = epb_access(dd, sdnum, 1);
diff --git a/drivers/infiniband/hw/qib/qib_tx.c b/drivers/infiniband/hw/qib/qib_tx.c
index eface3b3dacf..c9537cfc12ce 100644
--- a/drivers/infiniband/hw/qib/qib_tx.c
+++ b/drivers/infiniband/hw/qib/qib_tx.c
@@ -179,8 +179,6 @@ void qib_disarm_piobufs_set(struct qib_devdata *dd, unsigned long *mask,
 		pppd[i] = NULL;
 
 	for (i = 0; i < cnt; i++) {
-		int which;
-
 		if (!test_bit(i, mask))
 			continue;
 		/*
@@ -201,9 +199,7 @@ void qib_disarm_piobufs_set(struct qib_devdata *dd, unsigned long *mask,
 		    (!test_bit(i << 1, dd->pioavailkernel) &&
 		     find_ctxt(dd, i))) {
 			__set_bit(i, dd->pio_need_disarm);
-			which = 0;
 		} else {
-			which = 1;
 			dd->f_sendctrl(dd->pport, QIB_SENDCTRL_DISARM_BUF(i));
 		}
 		spin_unlock_irqrestore(&dd->pioavail_lock, flags);
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 9d92aeb8d9a1..46e2da09d05b 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -701,7 +701,7 @@ void qib_put_txreq(struct qib_verbs_txreq *tx)
  */
 void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail)
 {
-	struct rvt_qp *qp, *nqp;
+	struct rvt_qp *qp;
 	struct qib_qp_priv *qpp, *nqpp;
 	struct rvt_qp *qps[20];
 	struct qib_ibdev *dev;
@@ -714,7 +714,6 @@ void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail)
 	/* Search wait list for first QP wanting DMA descriptors. */
 	list_for_each_entry_safe(qpp, nqpp, &dev->dmawait, iowait) {
 		qp = qpp->owner;
-		nqp = nqpp->owner;
 		if (qp->port_num != ppd->port)
 			continue;
 		if (n == ARRAY_SIZE(qps))
-- 
cgit v1.2.3-59-g8ed1b