Am 17.06.20 um 18:37 schrieb Alan Stern:

On Wed, Jun 17, 2020 at 06:02:32PM +0200, Till Dörges wrote:

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Hi Alan,

sorry for the delay. It took me a while to get back to this.

Am 23.05.20 um 22:33 schrieb Alan Stern:

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I'm trying to get external HDDs from Sony to work under Linux with USB 3.0.

[...]

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 - PSZ-HA2T: idVendor=054c, idProduct=087d
 - PSZ-HA1T: idVendor=054c, idProduct=087d
 - PSZ-HA50: idVendor=054c, idProduct=087d
 - PSZ-HC1T: idVendor=054c, idProduct=0c4f

[...]

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I've also tried several of the quirk settings
(https://github.com/torvalds/linux/blob/ead751507de86d90fa250431e9990a8b881f713c/drivers/usb/storage/usb.c#L527).

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Try adding an entry to the unusual_uas.h file for the device, specifying 
the USB_FL_NO_REPORT_OPCODES flag.

I'm not sure I understand correctly. Do I have to compile the uas Kernel module
myself if I want to test a flag?

Because with setting the f flag (via options usb-storage quirks=054c:087d:f) the
PSZ-HA*1*T starts behaving nicely.

--- snip ---

$ cat /sys/module/usb_storage/parameters/quirks
054c:087d:f,054c:0c4f:f

--- snip ---

The PSZ-HA*2*T, however, still doesn't work with that.

Since the device stopped working under windows, I'm guessing that it's simply broken.

I'll try to get my hands on a new sample.


The PSZ-HA50 and the PSZ-HA1T work nicely when attached to USB 3.0 with this setting:

--- snip ---

$ cat /sys/module/usb_storage/parameters/quirks
054c:087d:u

--- snip ---

W/o this quirk they do not work.


I'd be surprised if a non-broken PSZ-HA2T behaved any differently.

So perhaps you might want to consider adding that quirk directly into the Kernel?


FTR, the PSZ-HC1T just worked.

Okay.  If you would like to write a patch for the quirk and submit it, you 
can.  Otherwise I'll write one for you.

I'd gladly take your offer of writing one for me. :-)

Thanks -- Till
-- 
Dipl.-Inform. Till Dörges                  doerges@pre-sense.de
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