From 463889e27e6f4f097374a6c9de5611f520766dad Mon Sep 17 00:00:00 2001
From: Julia Lawall <julia@diku.dk>
Date: Mon, 27 Jul 2009 06:13:30 +0000
Subject: [PATCH] drivers/net: Correct redundant test
res has already been tested. It seems that this test should be on the
recently returned value mmio.
A simplified version of the semantic match that finds this problem is as
follows: (http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
expression E;
@@
if (x == NULL || ...) { ... when forall
return ...; }
... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\)
(
*x == NULL
|
*x != NULL
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethoc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethoc.c b/drivers/net/ethoc.c
index ceb6a9c357ad..4dbe5f173273 100644
--- a/drivers/net/ethoc.c
+++ b/drivers/net/ethoc.c
@@ -894,7 +894,7 @@ static int ethoc_probe(struct platform_device *pdev)
mmio = devm_request_mem_region(&pdev->dev, res->start,
res->end - res->start + 1, res->name);
- if (!res) {
+ if (!mmio) {
dev_err(&pdev->dev, "cannot request I/O memory space\n");
ret = -ENXIO;
goto free;
--
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