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mmc: Fix incorrect warning when setting 0 Hz via debugfs

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It is possible to turn off the card clock by setting
the frequency to zero via debugfs e.g.

	echo 0 > /sys/kernel/debug/mmc0/clock

However that produces an incorrect warning that is
designed to warn if the frequency is below the minimum
operating frequency.  So correct the warning.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2014-09-23 23:00:26 +03:00 committed by Ulf Hansson
parent 6800754c36
commit 6a98f1e83a
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/core/core.c
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@ -995,7 +995,7 @@ void mmc_set_chip_select(struct mmc_host *host, int mode)
*/
static void __mmc_set_clock(struct mmc_host *host, unsigned int hz)
{
WARN_ON(hz < host->f_min);
WARN_ON(hz && hz < host->f_min);
if (hz > host->f_max)
hz = host->f_max;