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| author | Tony Lindgren <tony@atomide.com> | 2015-06-09 23:37:31 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2015-06-09 23:37:31 -0700 |
| commit | 63e63a1981c7247fea41ce97b3144befc8f2fb7b (patch) | |
| tree | 74a5708579661a741b6c62096530e68aee949273 /drivers/mmc | |
| parent | 5b83b2234be6733cfe22036c38031b2c890b3db8 (diff) | |
| parent | a3e362f18c01f28abcb6d8e5d00be8b5d97ea09d (diff) | |
| download | linux-63e63a1981c7247fea41ce97b3144befc8f2fb7b.tar.bz2 | |
Merge branch 'wakeirq-8250' into omap-for-v4.2/wakeirq-v2
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/atmel-mci.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index 03d7c7521d97..9a39e0b7e583 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -1304,7 +1304,7 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (ios->clock) { unsigned int clock_min = ~0U; - u32 clkdiv; + int clkdiv; spin_lock_bh(&host->lock); if (!host->mode_reg) { @@ -1328,7 +1328,12 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) /* Calculate clock divider */ if (host->caps.has_odd_clk_div) { clkdiv = DIV_ROUND_UP(host->bus_hz, clock_min) - 2; - if (clkdiv > 511) { + if (clkdiv < 0) { + dev_warn(&mmc->class_dev, + "clock %u too fast; using %lu\n", + clock_min, host->bus_hz / 2); + clkdiv = 0; + } else if (clkdiv > 511) { dev_warn(&mmc->class_dev, "clock %u too slow; using %lu\n", clock_min, host->bus_hz / (511 + 2)); |