From: Jon Cooper Date: Fri, 27 Sep 2013 17:26:30 +0000 (+0100) Subject: sfc: Add rmb() between reading stats and generation count to ensure consistency X-Git-Tag: accepted/tizen/common/20141203.182822~1266^2~48^2~5 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d546a89362dcc35bc1aacf0e8e3b0da5a7d2dc89;p=platform%2Fkernel%2Flinux-arm64.git sfc: Add rmb() between reading stats and generation count to ensure consistency Signed-off-by: Ben Hutchings --- 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;