This is a note to let you know that I've just added the patch titled

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

to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the usb-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From 05c8f1b67e67dcd786ae3fe44492bbc617b4bd12 Mon Sep 17 00:00:00 2001

From: James Buren braewoods+lkml@braewoods.net Date: Wed, 13 Oct 2021 20:55:04 -0500 Subject: usb-storage: Add compatibility quirk flags for iODD 2531/2541

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.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/storage/unusual_devs.h | 10 ++++++++++ 1 file changed, 10 insertions(+)

diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index c6b3fcf90180..29191d33c0e3 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -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