diff options
author | Pavel Machek <pavel@ucw.cz> | 2016-12-18 23:38:12 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2016-12-19 19:05:02 +0300 |
commit | ad688cdbb076833ba17fc65591cd0fe01900a5cf (patch) | |
tree | 0b36819266511a2dcacef21c8f42000ed88afaa0 /drivers/net/ethernet/stmicro/stmmac/enh_desc.c | |
parent | 162809dfc2bfb31eb54dc67733bcdab0f2d1534d (diff) | |
download | linux-ad688cdbb076833ba17fc65591cd0fe01900a5cf.tar.xz |
stmmac: fix memory barriers
Fix up memory barriers in stmmac driver. They are meant to protect
against DMA engine, so smp_ variants are certainly wrong, and dma_
variants are preferable.
Signed-off-by: Pavel Machek <pavel@denx.de>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/enh_desc.c')
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/enh_desc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c index ce97e522566a..f0d86321dfe2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c +++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c @@ -350,7 +350,7 @@ static void enh_desc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len, * descriptors for the same frame has to be set before, to * avoid race condition. */ - wmb(); + dma_wmb(); p->des0 = cpu_to_le32(tdes0); } |