[PATCH] usb-storage: Add US_FL_IGNORE_UAS for JMicron JMS581

Chris Bainbridge <[email protected]> Sat, 1 Aug 2026 11:47:51 +0100
Newsgroups org.kernel.vger.linux-usb
Message-ID <[email protected]>
Enabling UAS results in a 30-second boot hang when using a JMicron
JMS581 NVMe enclosure (specifically SSK 'SHE-C325 PRO' with a WD PC
SN520 NVMe drive).

Fixes:

[16.603548] Bluetooth: hci0: Device booted in 26690 usecs
[46.617796] sd 0:0:0:0: [sda] tag#28 uas_eh_abort_handler 0 uas-tag 14 inflight: CMD IN
[46.617859] sd 0:0:0:0: [sda] tag#28 CDB: Read(10) 28 00 0d 28 fe 10 00 00 20 00

Signed-off-by: Chris Bainbridge <[email protected]>
---
 drivers/usb/storage/unusual_devs.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index ac22fa318734..26f3a5809712 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2184,6 +2184,13 @@ UNUSUAL_DEV(0x152d, 0x0578, 0x0000, 0x9999,
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_BROKEN_FUA),
 
+/* JMicron JMS581 / SSK 'SHE-C325 PRO' NVMe enclosure */
+UNUSUAL_DEV(0x152d, 0x581d, 0x0000, 0x9999,
+		"JMicron",
+		"JMS581 NVMe enclosure",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_IGNORE_UAS),
+
 /*
  * Reported by Alexandre Oliva <[email protected]>
  * JMicron responds to USN and several other SCSI ioctls with a
-- 
2.47.3