Merge "clk: qcom: clk-alpha-pll: check for null when trying to get parent"

	unsigned long calibration_freq, freq_hz;

	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);

	const struct pll_vco *vco;

	struct clk_hw *parent;

	u64 a;

	u32 cal_l, regval, off = pll->offset;

	int ret;

	calibration_freq = ((pll->vco_table[0].min_freq +

				pll->vco_table[0].max_freq) * 54)/100;

	parent = clk_hw_get_parent(hw);

	if (!parent)

		return -EINVAL;

	freq_hz = alpha_pll_round_rate(pll, calibration_freq,

			clk_hw_get_rate(clk_hw_get_parent(hw)), &cal_l, &a);

			clk_hw_get_rate(parent), &cal_l, &a);

	/*

	 * Due to a limited number of bits for fractional rate programming, the

	 * rounded up rate could be marginally higher than the requested rate.