From: Tadeusz Struk <tadeusz.struk@intel.com>
Date: Tue, 21 Mar 2017 00:25:29 +0000 (-0700)
Subject: IB/hfi1: Check device id early during init
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=5d6f08afdd394c0b162cefe383093aace3e94e39;p=openwrt%2Fstaging%2Fblogic.git

IB/hfi1: Check device id early during init

If there is a wrong device passed to the driver it should fail early,
without trying to initialize the device only to find out that it has
an invalid device later during the init.

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@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/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c
index f40864e9a3b2..9bfb8ebe28b1 100644
--- a/drivers/infiniband/hw/hfi1/init.c
+++ b/drivers/infiniband/hw/hfi1/init.c
@@ -1425,6 +1425,16 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	/* First, lock the non-writable module parameters */
 	HFI1_CAP_LOCK();
 
+	/* Validate dev ids */
+	if (!(ent->device == PCI_DEVICE_ID_INTEL0 ||
+	      ent->device == PCI_DEVICE_ID_INTEL1)) {
+		hfi1_early_err(&pdev->dev,
+			       "Failing on unknown Intel deviceid 0x%x\n",
+			       ent->device);
+		ret = -ENODEV;
+		goto bail;
+	}
+
 	/* Validate some global module parameters */
 	ret = init_validate_rcvhdrcnt(&pdev->dev, rcvhdrcnt);
 	if (ret)
@@ -1470,15 +1480,6 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto bail;
 
-	if (!(ent->device == PCI_DEVICE_ID_INTEL0 ||
-	      ent->device == PCI_DEVICE_ID_INTEL1)) {
-		hfi1_early_err(&pdev->dev,
-			       "Failing on unknown Intel deviceid 0x%x\n",
-			       ent->device);
-		ret = -ENODEV;
-		goto clean_bail;
-	}
-
 	/*
 	 * Do device-specific initialization, function table setup, dd
 	 * allocation, etc.