parisc: ccio-dma: Handle return NULL error from ioremap_nocache

Fix error paths and return -ENOMEM instead of '1'.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 553ef8a5d588..b0558e2451b5 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -1539,7 +1539,7 @@ static int __init ccio_probe(struct parisc_device *dev)
         ioc = kzalloc(sizeof(struct ioc), GFP_KERNEL);
         if (ioc == NULL) {
                 printk(KERN_ERR MODULE_NAME ": memory allocation failure\n");
-                return 1;
+                return -ENOMEM;
         }
 
         ioc->name = dev->id.hversion == U2_IOA_RUNWAY ? "U2" : "UTurn";
@@ -1554,6 +1554,10 @@ static int __init ccio_probe(struct parisc_device *dev)
 
         ioc->hw_path = dev->hw_path;
         ioc->ioc_regs = ioremap_nocache(dev->hpa.start, 4096);
+        if (!ioc->ioc_regs) {
+                kfree(ioc);
+                return -ENOMEM;
+        }
         ccio_ioc_init(ioc);
         ccio_init_resources(ioc);
         hppa_dma_ops = &ccio_ops;