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    Subject[PATCH 5.4 100/222] net: stmmac: Enable 16KB buffer size
    Date
    From: Jose Abreu <Jose.Abreu@synopsys.com>

    commit b2f3a481c4cd62f78391b836b64c0a6e72b503d2 upstream.

    XGMAC supports maximum MTU that can go to 16KB. Lets add this check in
    the calculation of RX buffer size.

    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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
    +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
    @@ -1108,7 +1108,9 @@ static int stmmac_set_bfsize(int mtu, in
    {
    int ret = bufsize;

    - if (mtu >= BUF_SIZE_4KiB)
    + if (mtu >= BUF_SIZE_8KiB)
    + ret = BUF_SIZE_16KiB;
    + else if (mtu >= BUF_SIZE_4KiB)
    ret = BUF_SIZE_8KiB;
    else if (mtu >= BUF_SIZE_2KiB)
    ret = BUF_SIZE_4KiB;

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