diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 2827ccd9f35..f86f30058c1 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1291,11 +1291,24 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) * controllers. */ if (host->cmd->flags & MMC_RSP_BUSY) { + u32 present; + if (host->cmd->data) DBG("Cannot wait for busy signal when also " "doing a data transfer"); - else + else if (!(host->quirks & SDHCI_QUIRK_NO_TCIRQ_ON_NOT_BUSY)) return; + + /* The Samsung SDHCI does not seem to provide an INT_DATA_END + * when the system goes non-busy, so check the state of the + * transfer by reading SDHCI_PRESENT_STATE to see if the + * controller is ready + */ + + present = readl(host->ioaddr + SDHCI_PRESENT_STATE); + DBG("busy? present %08x, intstat %08x\n", present, intmask); + + /* fall through and take the SDHCI_INT_RESPONSE */ } if (intmask & SDHCI_INT_RESPONSE) |