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    Subject[PATCH AUTOSEL 4.14 48/57] net: stmmac: RX buffer size must be 16 byte aligned
    Date
    From: Jose Abreu <Jose.Abreu@synopsys.com>

    [ Upstream commit 8d558f0294fe92e04af192e221d0d0f6a180ee7b ]

    We need to align the RX buffer size to at least 16 byte so that IP
    doesn't mis-behave. This is required by HW.

    Changes from v2:
    - Align UP and not DOWN (David)

    Fixes: 7ac6653a085b ("stmmac: Move the STMicroelectronics driver")
    Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
    index 4ef923f1094a..e89466bd432d 100644
    --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
    +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
    @@ -51,7 +51,7 @@
    #include <linux/of_mdio.h>
    #include "dwmac1000.h"

    -#define STMMAC_ALIGN(x) __ALIGN_KERNEL(x, SMP_CACHE_BYTES)
    +#define STMMAC_ALIGN(x) ALIGN(ALIGN(x, SMP_CACHE_BYTES), 16)
    #define TSO_MAX_BUFF_SIZE (SZ_16K - 1)

    /* Module parameters */
    --
    2.20.1
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