The delay is present because we discovered many usb-storage devices that were not ready to accept commands immediately after insertion. We studied the behavior of Microsoft Windows and discovered it used a small delay before sending commands to the device, and thus we also implemented a delay. Some devices will work with delay_use = 0. Some will not. Matt On Thu, Mar 3, 2016 at 4:24 AM, Lipengcheng <lpc.li@xxxxxxxxxxxxx> wrote: > Hi, > > Please tell me why the process to delay to call in the 1s? The delay_use > = 0, we also found no side effects.So we can set the delay_use = 0? > > > > drivers/usb/storage/usb.c > > > > Best Regards, > > Pengcheng Li -- Matthew Dharm Maintainer, USB Mass Storage driver for Linux -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
