Commit e591fcf6 authored by Chevron Li's avatar Chevron Li Committed by Ulf Hansson
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mmc: sdhci-pci-o2micro: Fix card detect by dealing with debouncing 



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

Signed-off-by: default avatarChevron <Li&lt;chevron.li@bayhubtech.com>
Fixes: 7d440617 ("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: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent b13baccc

drivers/mmc/host/sdhci-pci-o2micro.c

+2 −0
Original line number Diff line number Diff line
@@ -152,6 +152,8 @@ static int sdhci_o2_get_cd(struct mmc_host *mmc) 


	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);

}