Re: [BUG] Regression in Linux 5.4.17 for JMicron JMS566 enclosure

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On Sun, Aug 23, 2020 at 08:08:37PM +0200, Cyril Roelandt wrote:
> Hello,
> 
> On 2020-08-23 10:47, Alan Stern wrote:
> > Yes; it looks like the problem is that there are entries for this device 
> > in both unusual_devs.h and unusual_uas.h -- and it doesn't help that the 
> > two entries aren't identical.
> > 
> > The unusual_devs.h entry tells usb-storage not to use FUA, but it 
> > doesn't rule out the uas driver.  And since the device claims to support 
> > UAS, usb-storage bows out.  But then the unusual_uas.h entry tells uas 
> > not to handle the drive, so the end result is that it doesn't get 
> > handled at all.
> > 
> > To fix the immediate problem you should add the US_FL_IGNORE_UAS flag to 
> > the entry in unusual_devs.h.
> 
> That did the trick[1]. Do you think this patch could be suitable for a
> future version of the kernel?
> 
> 
> Cyril
> 
> [1] https://framagit.org/Steap/linux/-/commit/c6b6f436f9c96a01101e9407ed481684c37fa87d

Can you submit this in a format that we can easily review, and hopefully
apply, it?

thanks,

greg k-h



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