Messages in this thread | | | Date | Wed, 27 Aug 2014 10:54:53 -0400 (EDT) | From | Alan Stern <> | Subject | Re: Buffer I/O error after s2ram with usb storage |
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On Wed, 27 Aug 2014, Matthieu CASTET wrote:
> Ping > > I have got also a problem with a usb sdcard reader (without power cut > during suspend)
> > > The usb storage driver call scsi_report_bus_reset after device reset, > > > but because of commit dfcf7775 <4>, we don't ignore unit attention if > > > "sshdr.asc == 0x28 && sshdr.ascq == 0x00" ("Not-ready to ready"). > > > > > > If dfcf7775 is reverted there is no more Buffer I/O error. > > > > > > Is that possible to find a way to restore the behavior before dfcf7775 > > > commit (no Buffer I/O error after device reset) after a suspend to ram ?
Since that commit was written to fix a problem with certain cdrom drives, maybe we would work around the issue by modifying the commit. Have it go back to the original behavior if the device isn't a cdrom drive.
That's not a complete fix (it won't help when a CD drive is attached via USB), but maybe it's better than nothing.
Alan Stern
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