https://bugzilla.kernel.org/show_bug.cgi?id=68161
--- Comment #6 from Greg Kroah-Hartman <greg@xxxxxxxxx> ---
On Sat, Jan 04, 2014 at 10:17:24PM +0000,
bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
wrote:
https://bugzilla.kernel.org/show_bug.cgi?id=68161
Bug ID: 68161
Summary: Unstable work of xhci with USB3.0 card reader and
UDMA7 CompactFlash card.
Please send this to the linux-usb@xxxxxxxxxxxxxxx mailing list.
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Original text from bugzilla:
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I've got SanDisk UDMA7 32Gb Extreme Pro CompactFlash card and Transcend
TS-RDF8K USB 3.0 card reader with latest firmware TS22. BIOS on my Dell
E6230is also updated to the latest version.
When card reader is in USB 2.0 port all work as expected.
When inserted to USB 3.0 port there are 3 opportunities.
1. In the most rare case all work as expected. However I have not managed to
reproduce this case with the latest kernel.
2. Sometimes card is not recognized and block device is not created.
3. In the most cases card is recognized, I can mount it from shell by
'mount'
command, copy files from/to it with 'cp' command etc. But when I enter
directory where card is mounted with midnight commander or thunar (I use
xfce) device hangs for couple of seconds and then resets. Same thing
happens when i try to mount card from thunar. In the last case rarely it
happens, that device after freeze doesn't go to reset, but than it hangs
when I try to work with it.
I've got older Transcend 4Gb 120x CompactFlash card that works without any
issues in USB 3.0 port.
Also I've tried Ginzzu GR-336B card reader with the same results.
ps
Sorry for my poor English. It's not my native language.
-------------------------
I've attached logs and wiresark's captures from usbmon to bug report at
bugzilla.kernel.org.
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