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    Subject[PATCH AUTOSEL 4.18 18/27] libertas: call into generic suspend code before turning off power
    Date
    From: Daniel Mack <daniel@zonque.org>

    [ Upstream commit 4f666675cdff0b986195413215eb062b7da6586f ]

    When powering down a SDIO connected card during suspend, make sure to call
    into the generic lbs_suspend() function before pulling the plug. This will
    make sure the card is successfully deregistered from the system to avoid
    communication to the card starving out.

    Fixes: 7444a8092906 ("libertas: fix suspend and resume for SDIO connected cards")
    Signed-off-by: Daniel Mack <daniel@zonque.org>
    Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
    Acked-by: Kalle Valo <kvalo@codeaurora.org>
    Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/wireless/marvell/libertas/if_sdio.c | 4 ++++
    1 file changed, 4 insertions(+)

    diff --git a/drivers/net/wireless/marvell/libertas/if_sdio.c b/drivers/net/wireless/marvell/libertas/if_sdio.c
    index 43743c26c071..39bf85d0ade0 100644
    --- a/drivers/net/wireless/marvell/libertas/if_sdio.c
    +++ b/drivers/net/wireless/marvell/libertas/if_sdio.c
    @@ -1317,6 +1317,10 @@ static int if_sdio_suspend(struct device *dev)
    if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
    dev_info(dev, "Suspend without wake params -- powering down card\n");
    if (priv->fw_ready) {
    + ret = lbs_suspend(priv);
    + if (ret)
    + return ret;
    +
    priv->power_up_on_resume = true;
    if_sdio_power_off(card);
    }
    --
    2.17.1
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