mmc: sdhci-pci: add quirks for broken MSI on O2Micro controllers
MSI on my O2Micro OZ600 SD card reader is broken. This patch adds a quirk to disable MSI on these controllers. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
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@ -561,6 +561,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
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static const struct sdhci_pci_fixes sdhci_o2 = {
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.probe = o2_probe,
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.quirks2 = SDHCI_QUIRK2_BROKEN_MSI,
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};
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static const struct sdhci_pci_fixes sdhci_jmicron = {
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@ -1418,7 +1419,8 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
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slots = chip->num_slots; /* Quirk may have changed this */
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pci_enable_msi(pdev);
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if (!(chip->quirks2 & SDHCI_QUIRK2_BROKEN_MSI))
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pci_enable_msi(pdev);
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for (i = 0; i < slots; i++) {
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slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
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@ -91,6 +91,8 @@ struct sdhci_host {
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unsigned int quirks2; /* More deviations from spec. */
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#define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0)
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/* broken MSI Interrupts */
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#define SDHCI_QUIRK2_BROKEN_MSI (1<<1)
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int irq; /* Device IRQ */
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void __iomem *ioaddr; /* Mapped address */
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