Guennadi Liakhovetski bec9d4e593
mmc: sdhci: Test cd-gpio instead of SDHCI presence when probing ...
Previously to this patch, an SDHCI platform that uses a GPIO for
card detection instead of the internal SDHCI_CARD_PRESENT bit on
the presence register would fail to detect a new card.
Some drivers worked around this in various ways: esdhc-imx defines
an IO accessor to fake the presence bit being true, s3c turns on
polling (which stops the SDHCI driver from checking the bit) after
a card's inserted. But none of this should be necessary; the real
fix is to check whether we're using a GPIO and avoid relying on
the presence bit if so, as this patch implements.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de >
Signed-off-by: Chris Ball <cjb@laptop.org >
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bec9d4e593