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4caf653a55
Both from a runtime PM and clock management point of view, the ->set_ios() code is unnecessary complex. A suboptimal path is also executed when the mmc core requests a clock rate of zero. As that happens during the card initialization phase, trying to save power by decreasing the runtime PM usage count and gating the clock via clk_disable_unprepare() is just superfluous. Moreover, from a runtime PM point of view the core will anyway keep the device active during the entire card initialization phase. Restructure the code to rely on the ios->power_mode to understand when the runtime PM usage count needs to be increased. Let's also deal with clock rate changes by simply applying the rate. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
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