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    Subject[PATCH 5.18 023/181] mmc: sdhci-pci-o2micro: Fix card detect by dealing with debouncing
    Date
    From: Chevron Li <chevron.li@bayhubtech.com>

    commit e591fcf6b4e39335c9b128b17738fcd2fdd278ae upstream.

    The result from ->get_cd() may be incorrect as the card detect debouncing
    isn't managed correctly. Let's fix it.

    Signed-off-by: Chevron Li<chevron.li@bayhubtech.com>
    Fixes: 7d44061704dd ("mmc: sdhci-pci-o2micro: Fix O2 Host data read/write DLL Lock phase shift issue")
    Cc: stable@vger.kernel.org
    Link: https://lore.kernel.org/r/20220602132543.596-1-chevron.li@bayhubtech.com
    [Ulf: Updated the commit message]
    Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/mmc/host/sdhci-pci-o2micro.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/drivers/mmc/host/sdhci-pci-o2micro.c
    +++ b/drivers/mmc/host/sdhci-pci-o2micro.c
    @@ -152,6 +152,8 @@ static int sdhci_o2_get_cd(struct mmc_ho

    if (!(sdhci_readw(host, O2_PLL_DLL_WDT_CONTROL1) & O2_PLL_LOCK_STATUS))
    sdhci_o2_enable_internal_clock(host);
    + else
    + sdhci_o2_wait_card_detect_stable(host);

    return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
    }

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