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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>
This commit is contained in:
Manuel Lauss 2012-03-29 19:05:04 +02:00 committed by Chris Ball
parent eb91b9118d
commit 210b7d2859
2 changed files with 5 additions and 1 deletions
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4
drivers/mmc/host/sdhci-pci.c
View File

@ -561,6 +561,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
static const struct sdhci_pci_fixes sdhci_o2 = {
.probe = o2_probe,
.quirks2 = SDHCI_QUIRK2_BROKEN_MSI,
};
static const struct sdhci_pci_fixes sdhci_jmicron = {
@ -1418,7 +1419,8 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
slots = chip->num_slots; /* Quirk may have changed this */
pci_enable_msi(pdev);
if (!(chip->quirks2 & SDHCI_QUIRK2_BROKEN_MSI))
pci_enable_msi(pdev);
for (i = 0; i < slots; i++) {
slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);

2
include/linux/mmc/sdhci.h
View File

@ -91,6 +91,8 @@ struct sdhci_host {
unsigned int quirks2; /* More deviations from spec. */
#define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0)
/* broken MSI Interrupts */
#define SDHCI_QUIRK2_BROKEN_MSI (1<<1)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */