parisc: eisa: Fix resource leaks in error paths

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

1 files changed, 16 insertions, 2 deletions

diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c
index 59edee911f7d..7e2f6d5a6aaf 100644
--- a/drivers/parisc/eisa.c
+++ b/drivers/parisc/eisa.c
@@ -334,7 +334,7 @@ static int __init eisa_probe(struct parisc_device *dev)
         result = request_irq(dev->irq, eisa_irq, IRQF_SHARED, "EISA", &eisa_dev);
         if (result) {
                 printk(KERN_ERR "EISA: request_irq failed!\n");
-                return result;
+                goto error_release;
         }
 
         /* Reserve IRQ2 */
@@ -358,6 +358,11 @@ static int __init eisa_probe(struct parisc_device *dev)
                 }
         }
         eisa_eeprom_addr = ioremap_nocache(eisa_dev.eeprom_addr, HPEE_MAX_LENGTH);
+        if (!eisa_eeprom_addr) {
+                result = -ENOMEM;
+                printk(KERN_ERR "EISA: ioremap_nocache failed!\n");
+                goto error_free_irq;
+        }
         result = eisa_enumerator(eisa_dev.eeprom_addr, &eisa_dev.hba.io_space,
                         &eisa_dev.hba.lmmio_space);
         init_eisa_pic();
@@ -372,11 +377,20 @@ static int __init eisa_probe(struct parisc_device *dev)
                 eisa_dev.root.dma_mask = 0xffffffff; /* wild guess */
                 if (eisa_root_register (&eisa_dev.root)) {
                         printk(KERN_ERR "EISA: Failed to register EISA root\n");
-                        return -1;
+                        result = -ENOMEM;
+                        goto error_iounmap;
                 }
         }
 
         return 0;
+
+error_iounmap:
+        iounmap(eisa_eeprom_addr);
+error_free_irq:
+        free_irq(dev->irq, &eisa_dev);
+error_release:
+        release_resource(&eisa_dev.hba.io_space);
+        return result;
 }
 
 static const struct parisc_device_id eisa_tbl[] = {