Hi Paul, Quoting Paul Burton (2015-04-24 06:17:28) > -void jz4740_clock_udc_disable_auto_suspend(void) > -{ > - jz_clk_reg_clear_bits(JZ_REG_CLOCK_GATE, JZ_CLOCK_GATE_UDC); > -} > -EXPORT_SYMBOL_GPL(jz4740_clock_udc_disable_auto_suspend); > - > -void jz4740_clock_udc_enable_auto_suspend(void) > -{ > - jz_clk_reg_set_bits(JZ_REG_CLOCK_GATE, JZ_CLOCK_GATE_UDC); > -} > -EXPORT_SYMBOL_GPL(jz4740_clock_udc_enable_auto_suspend); I couldn't find a caller for these functions. Where and how are they used? Thanks, Mike