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    Subject[PATCH 5.19 025/158] r8152: fix the RX FIFO settings when suspending
    Date
    From: Hayes Wang <hayeswang@realtek.com>

    [ Upstream commit b75d612014447e04abdf0e37ffb8f2fd8b0b49d6 ]

    The RX FIFO would be changed when suspending, so the related settings
    have to be modified, too. Otherwise, the flow control would work
    abnormally.

    BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216333
    Reported-by: Mark Blakeney <mark.blakeney@bullet-systems.net>
    Fixes: cdf0b86b250f ("r8152: fix a WOL issue")
    Signed-off-by: Hayes Wang <hayeswang@realtek.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/usb/r8152.c | 10 ++++++++++
    1 file changed, 10 insertions(+)

    diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
    index 46c7954d27629..d142ac8fcf6e2 100644
    --- a/drivers/net/usb/r8152.c
    +++ b/drivers/net/usb/r8152.c
    @@ -5906,6 +5906,11 @@ static void r8153_enter_oob(struct r8152 *tp)
    ocp_data &= ~NOW_IS_OOB;
    ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);

    + /* RX FIFO settings for OOB */
    + ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL0, RXFIFO_THR1_OOB);
    + ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1, RXFIFO_THR2_OOB);
    + ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2, RXFIFO_THR3_OOB);
    +
    rtl_disable(tp);
    rtl_reset_bmu(tp);

    @@ -6544,6 +6549,11 @@ static void rtl8156_down(struct r8152 *tp)
    ocp_data &= ~NOW_IS_OOB;
    ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);

    + /* RX FIFO settings for OOB */
    + ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_FULL, 64 / 16);
    + ocp_write_word(tp, MCU_TYPE_PLA, PLA_RX_FIFO_FULL, 1024 / 16);
    + ocp_write_word(tp, MCU_TYPE_PLA, PLA_RX_FIFO_EMPTY, 4096 / 16);
    +
    rtl_disable(tp);
    rtl_reset_bmu(tp);

    --
    2.35.1


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