linux-kernel - [PATCH] usnic: corretly check failed allocation

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Message-Id: <1444926460-29333-1-git-send-email-wuninsu@gmail.com>
Date:	Thu, 15 Oct 2015 12:27:40 -0400
From:	Insu Yun <wuninsu@...il.com>
To:	umalhi@...co.com, dledford@...hat.com, sean.hefty@...el.com,
	hal.rosenstock@...il.com, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	taesoo@...ech.edu, yeongjin.jang@...ech.edu, insu@...ech.edu,
	Insu Yun <wuninsu@...il.com>
Subject: [PATCH] usnic: corretly check failed allocation

Since ib_alloc_device returns allocated memory address, not error, 
it should be checked as IS_NULL, not IS_ERR_OR_NULL.

Signed-off-by: Insu Yun <wuninsu@...il.com>
---
 drivers/infiniband/hw/usnic/usnic_ib_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c
index 34c49b8..7c5f602 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_main.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c
@@ -328,14 +328,14 @@ static void *usnic_ib_device_add(struct pci_dev *dev)
 	netdev = pci_get_drvdata(dev);
 
 	us_ibdev = (struct usnic_ib_dev *)ib_alloc_device(sizeof(*us_ibdev));
-	if (IS_ERR_OR_NULL(us_ibdev)) {
+	if (!us_ibdev) {
 		usnic_err("Device %s context alloc failed\n",
 				netdev_name(pci_get_drvdata(dev)));
 		return ERR_PTR(us_ibdev ? PTR_ERR(us_ibdev) : -EFAULT);
 	}
 
 	us_ibdev->ufdev = usnic_fwd_dev_alloc(dev);
-	if (IS_ERR_OR_NULL(us_ibdev->ufdev)) {
+	if (!us_ibdev->ufdev) {
 		usnic_err("Failed to alloc ufdev for %s with err %ld\n",
 				pci_name(dev), PTR_ERR(us_ibdev->ufdev));
 		goto err_dealloc;
-- 
1.9.1

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