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| author | Daniel Drake <dsd@laptop.org> | 2012-07-03 23:13:39 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-09 08:27:33 -0700 |
| commit | 4067ad7b53cd5ba2699286620a2c645bb56542fa (patch) | |
| tree | 00965f05c20ff28499a2322053a20f2063301d1f | |
| parent | f351a1d7efda2edd52c23a150b07b8380c47b6c0 (diff) | |
| download | kernel_samsung_crespo-4067ad7b53cd5ba2699286620a2c645bb56542fa.zip kernel_samsung_crespo-4067ad7b53cd5ba2699286620a2c645bb56542fa.tar.gz kernel_samsung_crespo-4067ad7b53cd5ba2699286620a2c645bb56542fa.tar.bz2 | |
mmc: sdhci-pci: CaFe has broken card detection
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>
| -rw-r--r-- | drivers/mmc/host/sdhci-pci.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 936bbca..d3b3115 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -140,6 +140,7 @@ 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, }; |