May 27 2011

drivers/rtc/rtc-mrst.c: use release_mem_region after request_mem_region 

Author: Julia Lawall <julia@diku.dk>

The memory allocated using request_mem_region should be released using
release_mem_region, not release_region.

The semantic patch that fixes part of this problem is as follows:
(http://coccinelle.lip6.fr/)

  // 
  @@
  expression E1,E2,E3;
  @@

  request_mem_region(E1,E2,E3)
  ...
  ?- release_region(E1,E2)
  + release_mem_region(E1,E2)
  // 

[akpm@linux-foundation.org: use resource_size()]
Signed-off-by: Julia Lawall 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 

---
 drivers/rtc/rtc-mrst.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
 
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index b2f0968..0cec565 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -380,7 +380,7 @@ cleanup1:
 cleanup0:
 	dev_set_drvdata(dev, NULL);
 	mrst_rtc.dev = NULL;
-	release_region(iomem->start, iomem->end + 1 - iomem->start);
+	release_mem_region(iomem->start, resource_size(iomem));
 	dev_err(dev, "rtc-mrst: unable to initialise\n");
 	return retval;
 }
@@ -406,7 +406,7 @@ static void __devexit rtc_mrst_do_remove(struct device *dev)
 	mrst->rtc = NULL;
 
 	iomem = mrst->iomem;
-	release_region(iomem->start, iomem->end + 1 - iomem->start);
+	release_mem_region(iomem->start, resource_size(iomem));
 	mrst->iomem = NULL;
 
 	mrst->dev = NULL;

qlambert