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Subject[PATCH 13/16] ALSA: au1x00: fix error return code
Date
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>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
sound/mips/au1x00.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/sound/mips/au1x00.c b/sound/mips/au1x00.c
index fbcaa54..1e30e84 100644
--- a/sound/mips/au1x00.c
+++ b/sound/mips/au1x00.c
@@ -633,19 +633,25 @@ static int au1000_ac97_probe(struct platform_device *pdev)

au1000->stream[PLAYBACK] = kmalloc(sizeof(struct audio_stream),
GFP_KERNEL);
- if (!au1000->stream[PLAYBACK])
+ if (!au1000->stream[PLAYBACK]) {
+ err = -ENOMEM;
goto out;
+ }
au1000->stream[PLAYBACK]->dma = -1;

au1000->stream[CAPTURE] = kmalloc(sizeof(struct audio_stream),
GFP_KERNEL);
- if (!au1000->stream[CAPTURE])
+ if (!au1000->stream[CAPTURE]) {
+ err = -ENOMEM;
goto out;
+ }
au1000->stream[CAPTURE]->dma = -1;

r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!r)
+ if (!r) {
+ err = -ENODEV;
goto out;
+ }

err = -EBUSY;
au1000->ac97_res_port = request_mem_region(r->start, resource_size(r),


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