clk: meson: check pll rate param table before using it (840e1a73) · Commits · 戴 / test

Make sure the rate param table is available before using it. Some read-only plls don't provide it, which is ok since the table is not used by read-only clocks. R/W clocks are supposed to provide it, but it does not hurt check it. Signed-off-by:

Jerome Brunet <jbrunet@baylibre.com>

drivers/clk/meson/clk-pll.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -94,6 +94,13 @@ static long meson_clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
		const struct pll_rate_table *rate_table = pll->rate_table;
		int i;

		/*
		* if the table is missing, just return the current rate
		* since we don't have the other available frequencies
		*/
		if (!rate_table)
		return meson_clk_pll_recalc_rate(hw, *parent_rate);

		for (i = 0; i < pll->rate_count; i++) {
		if (rate <= rate_table[i].rate)
		return rate_table[i].rate;
		@@ -109,6 +116,9 @@ static const struct pll_rate_table *meson_clk_get_pll_settings(struct meson_clk_
		const struct pll_rate_table *rate_table = pll->rate_table;
		int i;

		if (!rate_table)
		return NULL;

		for (i = 0; i < pll->rate_count; i++) {
		if (rate == rate_table[i].rate)
		return &rate_table[i];

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