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Subject[PATCH 4.5 201/238] mmc: tegra: properly disable card clock
Date
4.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lucas Stach <dev@lynxeye.de>

commit 3491b69045b1926a198ba70dc1296ca253f2fbdd upstream.

The new code to do the clock rate setting externally to the SDMMC
module has a shortcut to not propagate changes with a 0 rate to
the CAR by simply bailing out. This breaks proper cutting of the
card clock. Fix it by directly calling the correct sdhci function.

Fixes: a8e326a911d3 "mmc: tegra: implement module external clock change"
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/mmc/host/sdhci-tegra.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -194,7 +194,7 @@ static void tegra_sdhci_set_clock(struct
unsigned long host_clk;

if (!clock)
- return;
+ return sdhci_set_clock(host, clock);

host_clk = tegra_host->ddr_signaling ? clock * 2 : clock;
clk_set_rate(pltfm_host->clk, host_clk);

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