[PATCH 1/20] drivers/net/ethernet/dec/tulip/dmfe.c: fix error return code

From: Peter Senna Tschudin
Date: Wed Oct 03 2012 - 12:21:32 EST


From: Peter Senna Tschudin <peter.senna@xxxxxxxxx>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

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

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@xxxxxxxxx>

---
drivers/net/ethernet/dec/tulip/dmfe.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/dec/tulip/dmfe.c b/drivers/net/ethernet/dec/tulip/dmfe.c
index 4d6fe60..d23755e 100644
--- a/drivers/net/ethernet/dec/tulip/dmfe.c
+++ b/drivers/net/ethernet/dec/tulip/dmfe.c
@@ -446,13 +446,17 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
/* Allocate Tx/Rx descriptor memory */
db->desc_pool_ptr = pci_alloc_consistent(pdev, sizeof(struct tx_desc) *
DESC_ALL_CNT + 0x20, &db->desc_pool_dma_ptr);
- if (!db->desc_pool_ptr)
+ if (!db->desc_pool_ptr) {
+ err = -ENOMEM;
goto err_out_res;
+ }

db->buf_pool_ptr = pci_alloc_consistent(pdev, TX_BUF_ALLOC *
TX_DESC_CNT + 4, &db->buf_pool_dma_ptr);
- if (!db->buf_pool_ptr)
+ if (!db->buf_pool_ptr) {
+ err = -ENOMEM;
goto err_out_free_desc;
+ }

db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr;
db->first_tx_desc_dma = db->desc_pool_dma_ptr;
@@ -462,8 +466,10 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
db->chip_id = ent->driver_data;
/* IO type range. */
db->ioaddr = pci_iomap(pdev, 0, 0);
- if (!db->ioaddr)
+ if (!db->ioaddr) {
+ err = -ENOMEM;
goto err_out_free_buf;
+ }

db->chip_revision = pdev->revision;
db->wol_mode = 0;

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