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Subject[PATCH 2/8] myri10ge: 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>

The patch also modifies the test of mgp->cmd to satisfy checkpatch.

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

---
drivers/net/ethernet/myricom/myri10ge/myri10ge.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
index af09905..71af98b 100644
--- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
+++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
@@ -4033,8 +4033,10 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
(void)pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd),
&mgp->cmd_bus, GFP_KERNEL);
- if (mgp->cmd == NULL)
+ if (!mgp->cmd) {
+ status = -ENOMEM;
goto abort_with_enabled;
+ }

mgp->board_span = pci_resource_len(pdev, 0);
mgp->iomem_base = pci_resource_start(pdev, 0);


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