sis190: use the allocated buffer as a status code in sis190_alloc_rx_skb
The local status code does not carry mory information.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
diff --git a/drivers/net/sis190.c b/drivers/net/sis190.c
index 20745fd..0d6aa1f 100644
--- a/drivers/net/sis190.c
+++ b/drivers/net/sis190.c
@@ -480,30 +480,22 @@
desc->status = 0x0;
}
-static int sis190_alloc_rx_skb(struct pci_dev *pdev, struct sk_buff **sk_buff,
- struct RxDesc *desc, u32 rx_buf_sz)
+static struct sk_buff *sis190_alloc_rx_skb(struct pci_dev *pdev,
+ struct RxDesc *desc, u32 rx_buf_sz)
{
struct sk_buff *skb;
- dma_addr_t mapping;
- int ret = 0;
skb = dev_alloc_skb(rx_buf_sz);
- if (!skb)
- goto err_out;
+ if (likely(skb)) {
+ dma_addr_t mapping;
- *sk_buff = skb;
+ mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
+ PCI_DMA_FROMDEVICE);
+ sis190_map_to_asic(desc, mapping, rx_buf_sz);
+ } else
+ sis190_make_unusable_by_asic(desc);
- mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
- PCI_DMA_FROMDEVICE);
-
- sis190_map_to_asic(desc, mapping, rx_buf_sz);
-out:
- return ret;
-
-err_out:
- ret = -ENOMEM;
- sis190_make_unusable_by_asic(desc);
- goto out;
+ return skb;
}
static u32 sis190_rx_fill(struct sis190_private *tp, struct net_device *dev,
@@ -512,14 +504,15 @@
u32 cur;
for (cur = start; cur < end; cur++) {
- int ret, i = cur % NUM_RX_DESC;
+ unsigned int i = cur % NUM_RX_DESC;
if (tp->Rx_skbuff[i])
continue;
- ret = sis190_alloc_rx_skb(tp->pci_dev, tp->Rx_skbuff + i,
- tp->RxDescRing + i, tp->rx_buf_sz);
- if (ret < 0)
+ tp->Rx_skbuff[i] = sis190_alloc_rx_skb(tp->pci_dev,
+ tp->RxDescRing + i,
+ tp->rx_buf_sz);
+ if (!tp->Rx_skbuff[i])
break;
}
return cur - start;