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authorPeter Senna Tschudin <peter.senna@gmail.com>2012-10-05 12:41:03 +0200
committerDavid S. Miller <davem@davemloft.net>2012-10-07 20:37:04 +0200
commit5b896029e9c4c9fd67eed80b7400dd68bdd93f52 (patch)
treeb7576fd1636afd505ca45acf5ab5e66a7b354262
parentnet: remove skb recycling (diff)
downloadlinux-5b896029e9c4c9fd67eed80b7400dd68bdd93f52.tar.xz
linux-5b896029e9c4c9fd67eed80b7400dd68bdd93f52.zip
drivers/net/ethernet/dec/tulip/dmfe.c: fix error return code
The function dmfe_init_one() return 0 for success and negative value for most of its internal tests failures. There are three exceptions that are error cases going to err_out_*:. Fore this three cases the function abort its success execution path, but returns non negative value, making it dificult for a caller function to notice the error. This patch fixes the error cases that do not return negative values. This was found by Coccinelle, but the code change was made by hand. This patch is not robot generated. 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@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/dec/tulip/dmfe.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/ethernet/dec/tulip/dmfe.c b/drivers/net/ethernet/dec/tulip/dmfe.c
index 4d6fe604fa64..d23755ea9bc7 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;