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clk: clk-gpio: Allow GPIO to sleep in set/get_parent

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When changing or retrieving clock parents, the caller is in a sleepable
state (like prepare) so the GPIO operation need not be atomic. Replace
gpiod_{g|s}et_value with gpiod_{g|s}et_value_cansleep in the {g|s}et_parent
calls for the GPIO based clock mux.

This fixes a "slowpath" warning when the GPIO controller is an I2C expander
or something similar.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Mike Looijmans 2018-03-13 09:54:03 +01:00 committed by Stephen Boyd
parent 7928b2cbe5
commit 2e838e7f3a
1 changed files with 2 additions and 2 deletions
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4
drivers/clk/clk-gpio.c
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@ -73,14 +73,14 @@ static u8 clk_gpio_mux_get_parent(struct clk_hw *hw)
{
struct clk_gpio *clk = to_clk_gpio(hw);
return gpiod_get_value(clk->gpiod);
return gpiod_get_value_cansleep(clk->gpiod);
}
static int clk_gpio_mux_set_parent(struct clk_hw *hw, u8 index)
{
struct clk_gpio *clk = to_clk_gpio(hw);
gpiod_set_value(clk->gpiod, index);
gpiod_set_value_cansleep(clk->gpiod, index);
return 0;
}