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| author | Linas Vepstas | 2006-12-13 22:22:04 +0100 |
|---|---|---|
| committer | Jeff Garzik | 2007-02-05 22:58:45 +0100 |
| commit | 90476a20fa4742c827b437d9814a51d06c153884 (patch) | |
| tree | 7f2e1027c570eb0f0d32ecc5409223a43ba24b92 /drivers/net/spider_net.c | |
| parent | Spidernet RX Chain tail (diff) | |
| download | kernel-qcow2-linux-90476a20fa4742c827b437d9814a51d06c153884.tar.gz kernel-qcow2-linux-90476a20fa4742c827b437d9814a51d06c153884.tar.xz kernel-qcow2-linux-90476a20fa4742c827b437d9814a51d06c153884.zip | |
Spidernet Memory barrier
Add memory barrier to make sure that the rest of the
RX descriptor state is flushed to memory before we tell
the hardware that its ready to go.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: James K Lewis <jklewis@us.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/spider_net.c')
| -rw-r--r-- | drivers/net/spider_net.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c index 67bbd7ba406d..3bf4b9b6662a 100644 --- a/drivers/net/spider_net.c +++ b/drivers/net/spider_net.c @@ -419,6 +419,7 @@ spider_net_prepare_rx_descr(struct spider_net_card *card, card->spider_stats.rx_iommu_map_error++; descr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE; } else { + wmb(); descr->dmac_cmd_status = SPIDER_NET_DESCR_CARDOWNED | SPIDER_NET_DMAC_NOINTR_COMPLETE; } |