Commit cf584dd3 authored Jul 06, 2015 by Oliver Neukum Committed by Sasha Levin Aug 27, 2015

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



[ Upstream commit 5fb2c782f451a4fb9c19c076e2c442839faf0f76 ]

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.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
CC: stable@vger.kernel.org
Reviewed-by: Lars Melin <larsm17@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

parent 274a010f

drivers/usb/storage/unusual_devs.h

+12 −0

Original line number	Diff line number	Diff line
		@@ -2065,6 +2065,18 @@ UNUSUAL_DEV( 0x1908, 0x3335, 0x0200, 0x0200,
		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
		US_FL_NO_READ_DISC_INFO ),

		/* Reported by Oliver Neukum <oneukum@suse.com>
		* 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 <sven-usbst@geggus.net>
		* This encrypted pen drive returns bogus data for the initial READ(10).
		*/