diff options
| -rw-r--r-- | drivers/mmc/host/sdhci-pci.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 61192973e7cb..c25639b839cd 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -1064,7 +1064,7 @@ static int sdhci_pci_enable_dma(struct sdhci_host *host) { struct sdhci_pci_slot *slot; struct pci_dev *pdev; - int ret; + int ret = -1; slot = sdhci_priv(host); pdev = slot->chip->pdev; @@ -1076,7 +1076,17 @@ static int sdhci_pci_enable_dma(struct sdhci_host *host) "doesn't fully claim to support it.\n"); } - ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (host->flags & SDHCI_USE_64_BIT_DMA) { + if (host->quirks2 & SDHCI_QUIRK2_BROKEN_64_BIT_DMA) { + host->flags &= ~SDHCI_USE_64_BIT_DMA; + } else { + ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); + if (ret) + dev_warn(&pdev->dev, "Failed to set 64-bit DMA mask\n"); + } + } + if (ret) + ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (ret) return ret; |