forked from luck/tmp_suning_uos_patched
backlight: pwm_bl: Fix uninitialized variable
Currently, if the DT does not define num-interpolated-steps then
num_steps is undefined and the interpolation code will deploy randomly.
Fix with a simple initialize to zero.
Fixes: 573fe6d1c2
("backlight: pwm_bl: Linear interpolation between brightness-levels")
Reported-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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@ -250,7 +250,7 @@ static int pwm_backlight_parse_dt(struct device *dev,
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struct device_node *node = dev->of_node;
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unsigned int num_levels = 0;
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unsigned int levels_count;
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unsigned int num_steps;
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unsigned int num_steps = 0;
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struct property *prop;
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unsigned int *table;
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int length;
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