SONYPI_EVENT_BACK_PRESSED 326 drivers/char/sonypi.c { 0x20, SONYPI_EVENT_BACK_PRESSED }, SONYPI_EVENT_BACK_PRESSED 452 drivers/char/sonypi.c { SONYPI_EVENT_BACK_PRESSED, KEY_BACK }, SONYPI_EVENT_BACK_PRESSED 3484 drivers/platform/x86/sony-laptop.c { 0x20, SONYPI_EVENT_BACK_PRESSED },