mirror of https://gitee.com/openkylin/linux.git
clk: ti: dra7-atl: Provide error check for incoming parameters in set_rate
Check for valid parameters in check rate. Else, we end up getting
errors.
This occurs as part of the inital clock tree update of child clock
nodes where new_rate could be 0 for non functional clocks.
Fixes: 9ac33b0ce8
(" CLK: TI: Driver for DRA7 ATL (Audio Tracking Logic)")
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
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@ -139,9 +139,13 @@ static long atl_clk_round_rate(struct clk_hw *hw, unsigned long rate,
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static int atl_clk_set_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long parent_rate)
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{
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struct dra7_atl_desc *cdesc = to_atl_desc(hw);
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struct dra7_atl_desc *cdesc;
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u32 divider;
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if (!hw || !rate)
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return -EINVAL;
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cdesc = to_atl_desc(hw);
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divider = ((parent_rate + rate / 2) / rate) - 1;
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if (divider > DRA7_ATL_DIVIDER_MASK)
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divider = DRA7_ATL_DIVIDER_MASK;
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