[PATCH] ioremap balanced with iounmap for drivers/video/pvr2fb

ioremap must be balanced by an iounmap and failing to do so can result in a
memory leak.

Signed-off-by: Amol Lad <amol@verismonetworks.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/video/pvr2fb.c b/drivers/video/pvr2fb.c
index c7bc80921f16..a93618bc9d27 100644
--- a/drivers/video/pvr2fb.c
+++ b/drivers/video/pvr2fb.c
@@ -905,6 +905,15 @@ static int __init pvr2fb_dc_init(void)
 
 static void pvr2fb_dc_exit(void)
 {
+        if (fb_info->screen_base) {
+                iounmap(fb_info->screen_base);
+                fb_info->screen_base = NULL;
+        }
+        if (currentpar->mmio_base) {
+                iounmap((void *)currentpar->mmio_base);
+                currentpar->mmio_base = 0;
+        }
+
         free_irq(HW_EVENT_VSYNC, 0);
 #ifdef CONFIG_SH_DMA
         free_dma(pvr2dma);
@@ -946,6 +955,15 @@ static int __devinit pvr2fb_pci_probe(struct pci_dev *pdev,
 
 static void __devexit pvr2fb_pci_remove(struct pci_dev *pdev)
 {
+        if (fb_info->screen_base) {
+                iounmap(fb_info->screen_base);
+                fb_info->screen_base = NULL;
+        }
+        if (currentpar->mmio_base) {
+                iounmap((void *)currentpar->mmio_base);
+                currentpar->mmio_base = 0;
+        }
+
         pci_release_regions(pdev);
 }