Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 7/16] parport_sunbpp: fix error return code | Date | Sun, 5 Apr 2015 14:06:27 +0200 |
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Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/)
// <smpl> @@ identifier ret; expression e1,e2; @@ ( if (\(ret < 0\|ret != 0\)) { ... return ret; } | ret = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl>
To satisfy checkpatch, this patch also changes leading spaces to a tab in the first changed line, and extracts an assignment from an if condition.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
--- drivers/parport/parport_sunbpp.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/parport/parport_sunbpp.c b/drivers/parport/parport_sunbpp.c index 01cf1c1..d7ad4b3 100644 --- a/drivers/parport/parport_sunbpp.c +++ b/drivers/parport/parport_sunbpp.c @@ -286,12 +286,17 @@ static int bpp_probe(struct platform_device *op) ops = kmemdup(&parport_sunbpp_ops, sizeof(struct parport_operations), GFP_KERNEL); - if (!ops) + if (!ops) { + err = -ENOMEM; goto out_unmap; + } dprintk(("register_port\n")); - if (!(p = parport_register_port((unsigned long)base, irq, dma, ops))) + p = parport_register_port((unsigned long)base, irq, dma, ops); + if (!p) { + err = -ENOMEM; goto out_free_ops; + } p->size = size; p->dev = &op->dev;
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