diff options
| author | Julia Lawall <julia@diku.dk> | 2009-07-19 06:13:04 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-07-21 13:00:43 -0700 |
| commit | 0021195c40326ac4702faf28c32accd91b331641 (patch) | |
| tree | 50cdfd6314313f3604b73396b7d72549e88abd66 /drivers | |
| parent | acb9c1b2f406d25c381de2b429f65706cc04d3b5 (diff) | |
drivers/net: Move a dereference below a NULL test
If the NULL test is necessary, then the dereferences should be moved below
the NULL test.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
type T;
expression E,E1;
identifier i,fld;
statement S;
@@
- T i = E->fld;
+ T i;
... when != E=E1
when != i
BUG_ON (E == NULL||...);
+ i = E->fld;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ibm_newemac/rgmii.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ibm_newemac/rgmii.c b/drivers/net/ibm_newemac/rgmii.c index 1d5379de690..8d76cb89dbd 100644 --- a/drivers/net/ibm_newemac/rgmii.c +++ b/drivers/net/ibm_newemac/rgmii.c @@ -188,11 +188,12 @@ void rgmii_put_mdio(struct of_device *ofdev, int input) void rgmii_detach(struct of_device *ofdev, int input) { struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev); - struct rgmii_regs __iomem *p = dev->base; - - mutex_lock(&dev->lock); + struct rgmii_regs __iomem *p; BUG_ON(!dev || dev->users == 0); + p = dev->base; + + mutex_lock(&dev->lock); RGMII_DBG(dev, "detach(%d)" NL, input); |