[PATCH] usb-storage: ignore ZTE MF 823 in mode 0x1225

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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 devices should
be ignored.

Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx>
CC: stable@xxxxxxxxxxxxxxx
---
 drivers/usb/storage/unusual_devs.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index caf1888..5674115 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2065,6 +2065,17 @@ UNUSUAL_DEV( 0x1908, 0x3335, 0x0200, 0x0200,
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_NO_READ_DISC_INFO ),
 
+/* Reported by Oliver Neukum <oneukum@xxxxxxxx>
+ * This device morphes spontaneously into another device if the access
+ * pattern of Windows isn't followed. Thus all media would be dirty
+ * if the initial instance is used.
+ * 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_IGNORE_DEVICE ),
+
 /* Reported by Sven Geggus <sven-usbst@xxxxxxxxxx>
  * This encrypted pen drive returns bogus data for the initial READ(10).
  */
-- 
2.1.4

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