diff options
| author | Manuel Lauss <manuel.lauss@googlemail.com> | 2012-03-29 19:05:04 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-04-05 20:32:25 -0400 |
| commit | 210b7d28598e402548b0164ca2f543e15aab8c6e (patch) | |
| tree | acb826d909410f8a8946bf7cdd8ed5cfadf14497 | |
| parent | eb91b9118db8c05a5a1257b594b021d32b491254 (diff) | |
| download | linux-hpc-210b7d28598e402548b0164ca2f543e15aab8c6e.tar.gz | |
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>
| -rw-r--r-- | drivers/mmc/host/sdhci-pci.c | 4 | ||||
| -rw-r--r-- | include/linux/mmc/sdhci.h | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index fbbebe251e016c..9303f7fc1e6847 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -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); diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index e9051e1cb1ce38..9752fe434ae983 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -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 */ |