Title: [7648] branches/2009R1/drivers/net/bfin_mac.c: Fix bug[#5600] Invalid data cache for each new rx skb buffer once
- Revision
- 7648
- Author
- sonicz
- Date
- 2009-10-15 03:08:33 -0400 (Thu, 15 Oct 2009)
Log Message
Fix bug[#5600] Invalid data cache for each new rx skb buffer once
before it is link to rx dma loop.
Modified Paths
Diff
Modified: branches/2009R1/drivers/net/bfin_mac.c (7647 => 7648)
--- branches/2009R1/drivers/net/bfin_mac.c 2009-10-15 07:02:16 UTC (rev 7647)
+++ branches/2009R1/drivers/net/bfin_mac.c 2009-10-15 07:08:33 UTC (rev 7648)
@@ -201,6 +201,11 @@
goto init_error;
}
skb_reserve(new_skb, NET_IP_ALIGN);
+ /* Invidate the data cache of skb->data range when it is write back
+ * cache. It will prevent overwritting the new data from DMA
+ */
+ blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
+ (unsigned long)new_skb->end);
r->skb = new_skb;
/*
@@ -686,19 +691,17 @@
}
/* reserve 2 bytes for RXDWA padding */
skb_reserve(new_skb, NET_IP_ALIGN);
- current_rx_ptr->skb = new_skb;
- current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2;
-
/* Invidate the data cache of skb->data range when it is write back
* cache. It will prevent overwritting the new data from DMA
*/
blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
(unsigned long)new_skb->end);
+ current_rx_ptr->skb = new_skb;
+ current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2;
+
len = (unsigned short)((current_rx_ptr->status.status_word) & RX_FRLEN);
skb_put(skb, len);
- blackfin_dcache_invalidate_range((unsigned long)skb->head,
- (unsigned long)skb->tail);
dev->last_rx = jiffies;
skb->protocol = eth_type_trans(skb, dev);
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