Hi Alan,

Thank you for your help.

Alan> This time the bus_reset() routine worked, which is an 
Alan> improvement over 
Alan> what you were seeing before.  But the device still didn't respond:
 
Haruo> If a device becomes an error, it seems that reset is not effective.
Haruo> Using ioctl (fd, USBDEVFS_RESET, 0) and this device,  
Haruo> Is checking whether a device can reset correctly by 
Haruo> performing effective?
 
Alan> Go ahead and try it.  I expect it will reset correctly when 
Alan> you test it like this, but it won't reset correctly after one of
Alan>  those errors occurs and the device stops responding.  
Alan>  That's just a guess.

Using ioctl (fd, USBDEVFS_RESET, 0), I tested reset. 
usb-storage of USB2.0 was successful.
When FDD was used in the case of USB1.1, 
mount became impossible after reset.

I adapt in your patch and continue a test.
--
Haruo


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