From: Todd Poynor <toddpoynor@xxxxxxxxxx>
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.
CC: Chris Ball <cjb@xxxxxxxxxx>
CC: Arnd Bergmann <arnd@xxxxxxxx>
CC: Dima Zavin <dima@xxxxxxxxxxx>
Change-Id: If99230d76138679b5767f77cb925f15408ae518e
Signed-off-by: Todd Poynor <toddpoynor@xxxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
drivers/mmc/host/sdhci.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 9e15f41..3820adf 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -992,7 +992,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
u16 clk;
unsigned long timeout;
- if (clock == host->clock)
+ if (clock && clock == host->clock)
return;
if (host->ops->set_clock) {
--
1.7.3.2.146.gca209
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