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Commit d546a893 authored by Jon Cooper's avatar Jon Cooper Committed by Ben Hutchings
Browse files

sfc: Add rmb() between reading stats and generation count to ensure consistency 



Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
parent 5e8a402f

drivers/net/ethernet/sfc/ef10.c

+1 −0
Original line number Diff line number Diff line
@@ -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;