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clk: Do a DT parent lookup even when index < 0 

We want to allow the parent lookup to happen even if the index is some
value less than 0. This may be the case if a clk provider only specifies
the .name member to match a string in the "clock-names" DT property. We
shouldn't require that the index be >= 0 to make this use case work.

Fixes: 601b6e9330 ("clk: Allow parents to be specified via clkspec index")
Reported-by: Alexandre Mergnat <amergnat@baylibre.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Stephen Boyd 2019-06-14 10:46:06 -07:00
parent 9caec6620f
commit c8edb316b9
1 changed files with 1 additions and 1 deletions
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2
drivers/clk/clk.c
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@ -368,7 +368,7 @@ static struct clk_core *clk_core_get(struct clk_core *core, u8 p_index)
const char *dev_id = dev ? dev_name(dev) : NULL;
struct device_node *np = core->of_node;
if (np && index >= 0)
if (np && (name || index >= 0))
hw = of_clk_get_hw(np, index, name);
/*