mcb: request_mem_region() returns NULL on error

The code here is checking for IS_ERR() when request_mem_region() only
returns NULL on error and never an ERR_PTR.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/mcb/mcb-pci.c b/drivers/mcb/mcb-pci.c
index 0af7361e377f..de36237d7c6b 100644
--- a/drivers/mcb/mcb-pci.c
+++ b/drivers/mcb/mcb-pci.c
@@ -56,9 +56,9 @@ static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
         res = request_mem_region(priv->mapbase, CHAM_HEADER_SIZE,
                                  KBUILD_MODNAME);
-        if (IS_ERR(res)) {
+        if (!res) {
                 dev_err(&pdev->dev, "Failed to request PCI memory\n");
-                ret = PTR_ERR(res);
+                ret = -EBUSY;
                 goto out_disable;
         }