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    Subject[PATCH 5.9 055/152] net: stmmac: dwmac_lib: enlarge dma reset timeout
    Date
    From: Jisheng Zhang <Jisheng.Zhang@synaptics.com>

    [ Upstream commit 56311a315da7ebc668dbcc2f1c99689cc10796c4 ]

    If the phy enables power saving technology, the dwmac's software reset
    needs more time to complete, enlarge dma reset timeout to 200000us.

    Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
    Link: https://lore.kernel.org/r/20201113090902.5c7aab1a@xhacker.debian
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
    index cb87d31a99dfb..57a53a600aa55 100644
    --- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
    +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
    @@ -23,7 +23,7 @@ int dwmac_dma_reset(void __iomem *ioaddr)

    return readl_poll_timeout(ioaddr + DMA_BUS_MODE, value,
    !(value & DMA_BUS_MODE_SFT_RESET),
    - 10000, 100000);
    + 10000, 200000);
    }

    /* CSR1 enables the transmit DMA to check for new descriptor */
    --
    2.27.0


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