| From | Greg Kroah-Hartman <> | Subject | [ 003/122] mmc: sdhci-pci: CaFe has broken card detection | Date | Tue, 7 Aug 2012 15:24:51 -0700 |
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From: Greg KH <gregkh@linuxfoundation.org>
3.5-stable review patch. If anyone has any objections, please let me know.
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From: Daniel Drake <dsd@laptop.org>
commit 55fc05b7414274f17795cd0e8a3b1546f3649d5e upstream.
At http://dev.laptop.org/ticket/11980 we have determined that the Marvell CaFe SDHCI controller reports bad card presence during resume. It reports that no card is present even when it is. This is a regression -- resume worked back around 2.6.37.
Around 400ms after resuming, a "card inserted" interrupt is generated, at which point it starts reporting presence.
Work around this hardware oddity by setting the SDHCI_QUIRK_BROKEN_CARD_DETECTION flag. Thanks to Chris Ball for helping with diagnosis.
Signed-off-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/mmc/host/sdhci-pci.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -157,6 +157,7 @@ static const struct sdhci_pci_fixes sdhc static const struct sdhci_pci_fixes sdhci_cafe = { .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER | SDHCI_QUIRK_NO_BUSY_IRQ | + SDHCI_QUIRK_BROKEN_CARD_DETECTION | SDHCI_QUIRK_BROKEN_TIMEOUT_VAL, };
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