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>

diff --git a/drivers/mcb/mcb-pci.c b/drivers/mcb/mcb-pci.c
index 0af7361e377f61565258346f3f84a3933b9f15ba..de36237d7c6b45de10fca57cc1870fde5a0620e5 100644 (file)
--- 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;
        }