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x86: pinctrl: Update comment for intel_pinctrl_get_pad()
Add information about what is returned on error. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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@ -300,6 +300,7 @@ u32 intel_pinctrl_get_config_reg(struct udevice *dev, uint offset);
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* @pad: Pad to check
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* @devp: Returns pinctrl device containing that pad
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* @offsetp: Returns offset of pad within that pinctrl device
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* @return 0 if OK, -ENOTBLK if pad number is invalid
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*/
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int intel_pinctrl_get_pad(uint pad, struct udevice **devp, uint *offsetp);
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