Commit 2be363c8 authored Oct 13, 2021 by James Buren Committed by Greg Kroah-Hartman Nov 12, 2021

usb-storage: Add compatibility quirk flags for iODD 2531/2541



commit 05c8f1b67e67dcd786ae3fe44492bbc617b4bd12 upstream.

These drive enclosures have firmware bugs that make it impossible to mount
a new virtual ISO image after Linux ejects the old one if the device is
locked by Linux. Windows bypasses this problem by the fact that they do
not lock the device. Add a quirk to disable device locking for these
drive enclosures.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Buren <braewoods+lkml@braewoods.net>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211014015504.2695089-1-braewoods+lkml@braewoods.net


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 3e7a9e8e

drivers/usb/storage/unusual_devs.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -406,6 +406,16 @@ UNUSUAL_DEV( 0x04b8, 0x0602, 0x0110, 0x0110,
		"785EPX Storage",
		USB_SC_SCSI, USB_PR_BULK, NULL, US_FL_SINGLE_LUN),

		/*
		* Reported by James Buren <braewoods+lkml@braewoods.net>
		* Virtual ISOs cannot be remounted if ejected while the device is locked
		* Disable locking to mimic Windows behavior that bypasses the issue
		*/
		UNUSUAL_DEV( 0x04c5, 0x2028, 0x0001, 0x0001,
		"iODD",
		"2531/2541",
		USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NOT_LOCKABLE),

		/*
		* Not sure who reported this originally but
		* Pavel Machek <pavel@ucw.cz> reported that the extra US_FL_SINGLE_LUN