diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index f47c4a8370be..c60dde917e49 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -681,9 +681,20 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd) if (!data) target_timeout = cmd->busy_timeout * 1000; else { - target_timeout = data->timeout_ns / 1000; - if (host->clock) - target_timeout += data->timeout_clks / host->clock; + target_timeout = DIV_ROUND_UP(data->timeout_ns, 1000); + if (host->clock && data->timeout_clks) { + unsigned long long val; + + /* + * data->timeout_clks is in units of clock cycles. + * host->clock is in Hz. target_timeout is in us. + * Hence, us = 1000000 * cycles / Hz. Round up. + */ + val = 1000000 * data->timeout_clks; + if (do_div(val, host->clock)) + target_timeout++; + target_timeout += val; + } } /* @@ -3126,14 +3137,14 @@ int sdhci_add_host(struct sdhci_host *host) if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) host->timeout_clk *= 1000; + if (override_timeout_clk) + host->timeout_clk = override_timeout_clk; + mmc->max_busy_timeout = host->ops->get_max_timeout_count ? host->ops->get_max_timeout_count(host) : 1 << 27; mmc->max_busy_timeout /= host->timeout_clk; } - if (override_timeout_clk) - host->timeout_clk = override_timeout_clk; - mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23; mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD; |