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drivers/net/ax88796.c: Return error code in failure

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In this code, 0 is returned on failure, even though other
failures return -ENOMEM or other similar values.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@a@
identifier alloc;
identifier ret;
constant C;
expression x;
@@

x = alloc(...);
if (x == NULL) { <+... \(ret = -C; \| return -C; \) ...+> }

@@
identifier f, a.alloc;
expression ret;
expression x,e1,e2,e3;
@@

ret = 0
... when != ret = e1
*x = alloc(...)
... when != ret = e2
if (x == NULL) { ... when != ret = e3
  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julia Lawall 2010-10-18 04:11:14 +00:00 committed by David S. Miller
parent afed4ccb0d
commit 13eea19213
1 changed files with 1 additions and 0 deletions
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drivers/net/ax88796.c
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@ -864,6 +864,7 @@ static int ax_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {
dev_err(&pdev->dev, "no IRQ specified\n");
ret = -ENXIO;
goto exit_mem;
}