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

[Julia Lawall]

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.law...@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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