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mmc: sdhci: Always pass clock request value zero to set_clock host op

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To allow the set_clock host op to disable the SDCLK source when not
needed, always call the host op when the requested clock speed is
zero.  Do this even if host->clock already equals zero, because
the SDHCI driver may set that value (without calling the host op)
to force an update at the next (non-zero-speed) call.

Signed-off-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Todd Poynor 2011-12-27 15:48:46 +02:00 committed by Chris Ball
parent e2a0a5829c
commit 30832ab56c
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/host/sdhci.c
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@ -1068,7 +1068,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
u16 clk = 0; u16 clk = 0;
unsigned long timeout; unsigned long timeout;
if (clock == host->clock) if (clock && clock == host->clock)
return; return;
host->mmc->actual_clock = 0; host->mmc->actual_clock = 0;