Aug 09 2009

drivers/net: Correct use of request_region/request_mem_region 

Author: Julia Lawall <julia@diku.dk>

request_mem_region should be used with release_mem_region, not request_region.

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

// 
@r2@
expression start;
@@

request_mem_region(start,...)

@b2@
expression r2.start;
@@

request_region(start,...)

@depends on !b2@
expression r2.start;
expression E;
@@

- release_region
+ release_mem_region
  (start,E)
// 

Signed-off-by: Julia Lawall 
Signed-off-by: David S. Miller 

---
 drivers/net/jazzsonic.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
 
diff --git a/drivers/net/jazzsonic.c b/drivers/net/jazzsonic.c
index ec337b5..6e5b3f3 100644
--- a/drivers/net/jazzsonic.c
+++ b/drivers/net/jazzsonic.c
@@ -203,7 +203,7 @@ static int __devinit sonic_probe1(struct net_device *dev)
 
 	return 0;
 out:
-	release_region(dev->base_addr, SONIC_MEM_SIZE);
+	release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
 	return err;
 }
 
@@ -247,7 +247,7 @@ static int __devinit jazz_sonic_probe(struct platform_device *pdev)
 	return 0;
 
 out1:
-	release_region(dev->base_addr, SONIC_MEM_SIZE);
+	release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
 out:
 	free_netdev(dev);
 
@@ -269,7 +269,7 @@ static int __devexit jazz_sonic_device_remove (struct platform_device *pdev)
 	unregister_netdev(dev);
 	dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
 	                  lp->descriptors, lp->descriptors_laddr);
-	release_region (dev->base_addr, SONIC_MEM_SIZE);
+	release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
 	free_netdev(dev);
 
 	return 0;

qlambert