REG_PKT_BE_BK_LIFE_TIME  780 drivers/staging/rtl8188eu/hal/usb_halinit.c 	usb_write16(Adapter, REG_PKT_BE_BK_LIFE_TIME, 0x0400);	/*  unit: 256us. 256ms */
REG_PKT_BE_BK_LIFE_TIME  911 drivers/staging/rtl8723bs/hal/sdio_halinit.c 	rtw_write16(padapter, REG_PKT_BE_BK_LIFE_TIME, 0x0400);	/*  unit: 256us. 256ms */