The patch titled
spidernet: rework RX linked list
has been removed from the -mm tree. Its filename was
spidernet-rework-rx-linked-list.patch
This patch was dropped because an updated version will be merged
------------------------------------------------------
Subject: spidernet: rework RX linked list
From: Linas Vepstas <linas@xxxxxxxxxxxxxx>
Make the hardware perceive the RX descriptor ring as a null-terminated linked
list, instead of a circular ring.
Signed-off-by: Linas Vepstas <linas@xxxxxxxxxxxxxx>
Cc: James K Lewis <jklewis@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/net/spider_net.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff -puN drivers/net/spider_net.c~spidernet-rework-rx-linked-list drivers/net/spider_net.c
--- a/drivers/net/spider_net.c~spidernet-rework-rx-linked-list
+++ a/drivers/net/spider_net.c
@@ -389,9 +389,13 @@ spider_net_prepare_rx_descr(struct spide
card->spider_stats.rx_iommu_map_error++;
descr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
} else {
+ descr->next_descr_addr = 0;
wmb();
descr->dmac_cmd_status = SPIDER_NET_DESCR_CARDOWNED |
SPIDER_NET_DMAC_NOINTR_COMPLETE;
+
+ wmb();
+ descr->prev->next_descr_addr = descr->bus_addr;
}
return 0;
@@ -1676,12 +1680,6 @@ spider_net_open(struct net_device *netde
+ card->num_tx_desc * sizeof(struct spider_net_descr),
card->num_rx_desc);
- descr = card->rx_chain.head;
- do {
- descr->next_descr_addr = descr->next->bus_addr;
- descr = descr->next;
- } while (descr != card->rx_chain.head);
-
/* allocate rx skbs */
if (spider_net_alloc_rx_skbs(card))
goto alloc_skbs_failed;
_
Patches currently in -mm which might be from linas@xxxxxxxxxxxxxx are
origin.patch
spidernet-rework-rx-linked-list.patch
-
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