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Message-ID: <1381254200.1530.11.camel@bwh-desktop.uk.level5networks.com> Date: Tue, 8 Oct 2013 18:43:20 +0100 From: Ben Hutchings <bhutchings@...arflare.com> To: David Miller <davem@...emloft.net> CC: <netdev@...r.kernel.org>, <linux-net-drivers@...arflare.com> Subject: [PATCH net 1/6] sfc: Add rmb() between reading stats and generation count to ensure consistency From: Jon Cooper <jcooper@...arflare.com> Signed-off-by: Ben Hutchings <bhutchings@...arflare.com> --- drivers/net/ethernet/sfc/ef10.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index 9f18ae9..a4fbb38 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -545,6 +545,7 @@ static int efx_ef10_try_update_nic_stats(struct efx_nic *efx) rmb(); efx_nic_update_stats(efx_ef10_stat_desc, EF10_STAT_COUNT, stats_mask, stats, efx->stats_buffer.addr, false); + rmb(); generation_start = dma_stats[MC_CMD_MAC_GENERATION_START]; if (generation_end != generation_start) return -EAGAIN; -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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