Commit 99a77922 authored by Daniel Drake's avatar Daniel Drake Committed by Ben Hutchings

mmc: sdhci-pci: CaFe has broken card detection

commit 55fc05b7 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: default avatarDaniel Drake <dsd@laptop.org>
[stable@: please apply to 3.0+]
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
parent e87ebd53
......@@ -148,6 +148,7 @@ static const struct sdhci_pci_fixes sdhci_ene_714 = {
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,
};
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment