linux-kernel - [PATCH v2 2/2] USB: storage: add quirk for SMI SM3350

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Message-Id: <20190103032618.9237-3-icenowy@aosc.io>
Date:   Thu,  3 Jan 2019 11:26:18 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     Alan Stern <stern@...land.harvard.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net,
        linux-kernel@...r.kernel.org
Cc:     Icenowy Zheng <icenowy@...c.io>
Subject: [PATCH v2 2/2] USB: storage: add quirk for SMI SM3350

The SMI SM3350 USB-UFS bridge controller cannot handle long sense request
correctly and will make the chip refuse to do read/write when requested
long sense.

Add a bad sense quirk for it.

Signed-off-by: Icenowy Zheng <icenowy@...c.io>
---
 drivers/usb/storage/unusual_devs.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index f7f83b21dc74..ea0d27a94afe 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1265,6 +1265,18 @@ UNUSUAL_DEV( 0x090c, 0x1132, 0x0000, 0xffff,
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_FIX_CAPACITY ),
 
+/*
+ * Reported by Icenowy Zheng <icenowy@...c.io>
+ * The SMI SM3350 USB-UFS bridge controller will enter a wrong state
+ * that do not process read/write command if a long sense is requested,
+ * so force to use 18-byte sense.
+ */
+UNUSUAL_DEV(  0x090c, 0x3350, 0x0000, 0xffff,
+		"SMI",
+		"SM3350 UFS-to-USB-Mass-Storage bridge",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_BAD_SENSE ),
+
 /*
  * Reported by Paul Hartman <paul.hartman+linux@...il.com>
  * This card reader returns "Illegal Request, Logical Block Address
-- 
2.18.1