IB/{hfi1, qib}: Add handling of kernel restart
A warm restart will fail to unload the driver, leaving link state
potentially flapping up to the point the BIOS resets the adapter.
Correct the issue by hooking the shutdown pci method,
which will bring port down.
Cc: <stable@vger.kernel.org> # 4.9.x
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Alex Estrin <alex.estrin@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 6c68f8a..0155202 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -841,6 +841,10 @@ static void qib_shutdown_device(struct qib_devdata *dd)
struct qib_pportdata *ppd;
unsigned pidx;
+ if (dd->flags & QIB_SHUTDOWN)
+ return;
+ dd->flags |= QIB_SHUTDOWN;
+
for (pidx = 0; pidx < dd->num_pports; ++pidx) {
ppd = dd->pport + pidx;
@@ -1182,6 +1186,7 @@ void qib_disable_after_error(struct qib_devdata *dd)
static void qib_remove_one(struct pci_dev *);
static int qib_init_one(struct pci_dev *, const struct pci_device_id *);
+static void qib_shutdown_one(struct pci_dev *);
#define DRIVER_LOAD_MSG "Intel " QIB_DRV_NAME " loaded: "
#define PFX QIB_DRV_NAME ": "
@@ -1199,6 +1204,7 @@ static struct pci_driver qib_driver = {
.name = QIB_DRV_NAME,
.probe = qib_init_one,
.remove = qib_remove_one,
+ .shutdown = qib_shutdown_one,
.id_table = qib_pci_tbl,
.err_handler = &qib_pci_err_handler,
};
@@ -1549,6 +1555,13 @@ static void qib_remove_one(struct pci_dev *pdev)
qib_postinit_cleanup(dd);
}
+static void qib_shutdown_one(struct pci_dev *pdev)
+{
+ struct qib_devdata *dd = pci_get_drvdata(pdev);
+
+ qib_shutdown_device(dd);
+}
+
/**
* qib_create_rcvhdrq - create a receive header queue
* @dd: the qlogic_ib device