Patch "usb-storage: ignore ZTE MF 823 card reader in mode 0x1225" has been added to the 4.1-stable tree

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

    usb-storage: ignore ZTE MF 823 card reader in mode 0x1225

to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     usb-storage-ignore-zte-mf-823-card-reader-in-mode-0x1225.patch

and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Oliver Neukum <[email protected]>
Date: Mon, 6 Jul 2015 13:12:32 +0200
Subject: usb-storage: ignore ZTE MF 823 card reader in mode 0x1225

From: Oliver Neukum <[email protected]>

commit 5fb2c782f451a4fb9c19c076e2c442839faf0f76 upstream.

This device automatically switches itself to another mode (0x1405) unless the specific access pattern of Windows is followed in its initial mode. That makes a dirty unmount of the internal storage devices inevitable if they are mounted. So the card reader of such a device should be ignored, lest an unclean removal become inevitable.

This replaces an earlier patch that ignored all LUNs of this device. That patch was overly broad.

---
 drivers/usb/storage/unusual_devs.h |   12 ++++++++++++
 1 file changed, 12 insertions(+)

@@ -2065,6 +2065,18 @@ UNUSUAL_DEV( 0x1908, 0x3335, 0x0200, 0x0
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_NO_READ_DISC_INFO ),
 
+/* Reported by Oliver Neukum <[email protected]>
+ * This device morphes spontaneously into another device if the access
+ * pattern of Windows isn't followed. Thus writable media would be dirty
+ * if the initial instance is used. So the device is limited to its
+ * virtual CD.
+ * And yes, the concept that BCD goes up to 9 is not heeded */
+UNUSUAL_DEV( 0x19d2, 0x1225, 0x0000, 0xffff,
+		"ZTE,Incorporated",
+		"ZTE WCDMA Technologies MSM",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_SINGLE_LUN ),
+
 /* Reported by Sven Geggus <[email protected]>
  * This encrypted pen drive returns bogus data for the initial READ(10).
  */

Patches currently in stable-queue which might be from [email protected] are

queue-4.1/usb-storage-ignore-zte-mf-823-card-reader-in-mode-0x1225.patch