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Subject[PATCH 4/13] drivers/net/au1000_eth.c: Remove redundant test
From: Julia Lawall <julia@diku.dk>

phydev is checked to be not NULL a few lines above.

A simplified version of the semantic patch that makes this change is as
follows: (http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
expression E;
position p1,p2;
@@

if (x@p1 == NULL || ...) { ... when forall
return ...; }
... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\)
(
x@p2 == NULL
|
x@p2 != NULL
)

// another path to the test that is not through p1?
@s exists@
local idexpression r.x;
position r.p1,r.p2;
@@

... when != x@p1
(
x@p2 == NULL
|
x@p2 != NULL
)

@fix depends on !s@
position r.p1,r.p2;
expression x,E;
statement S1,S2;
@@

(
- if ((x@p2 != NULL) || ...)
S1
|
- if ((x@p2 == NULL) && ...) S1
|
- BUG_ON(x@p2 == NULL);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
drivers/net/au1000_eth.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c
index ecc2573..9c875bb 100644
--- a/drivers/net/au1000_eth.c
+++ b/drivers/net/au1000_eth.c
@@ -353,7 +353,6 @@ static int mii_probe (struct net_device *dev)
}

/* now we are supposed to have a proper phydev, to attach to... */
- BUG_ON(!phydev);
BUG_ON(phydev->attached_dev);

phydev = phy_connect(dev, phydev->dev.bus_id, &au1000_adjust_link, 0,

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