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clk: gemini: Read status before using the value 

The probe does a shift and mask of val without having read it from the hardware.

Fixes: 846423f967 ("clk: Add Gemini SoC clock controller")
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
hifive-unleashed-5.1
Joel Stanley 2017-06-29 15:31:07 +09:30 committed by Stephen Boyd
parent 2b286b09a0
commit 785b62167d
1 changed files with 1 additions and 0 deletions
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drivers/clk/clk-gemini.c
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@ -306,6 +306,7 @@ static int gemini_clk_probe(struct platform_device *pdev)
gemini_clk_data->hws[GEMINI_CLK_RTC] = hw;
/* CPU clock derived as a fixed ratio from the AHB clock */
regmap_read(map, GEMINI_GLOBAL_STATUS, &val);
val >>= CPU_AHB_RATIO_SHIFT;
val &= CPU_AHB_RATIO_MASK;
hw = clk_hw_register_fixed_factor(NULL, "cpu", "ahb", 0,