diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-esdhc-imx.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 38ebc4ea259..5888f041ae2 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -170,6 +170,19 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg) } if (unlikely(reg == SDHCI_INT_STATUS)) { + if (is_imx6q_usdhc(imx_data)) { + /* + * on mx6q, there is low possibility that + * DATA END interrupt comes ealier than DMA + * END interrupt which is conflict with standard + * host controller spec. In this case, read the + * status register again will workaround this issue. + */ + if ((val & SDHCI_INT_DATA_END) && \ + !(val & SDHCI_INT_DMA_END)) + val = readl(host->ioaddr + reg); + } + if (val & SDHCI_INT_VENDOR_SPEC_DMA_ERR) { val &= ~SDHCI_INT_VENDOR_SPEC_DMA_ERR; val |= SDHCI_INT_ADMA_ERROR; |