[PATCH V2 2/2] usb: add decriptor of persist fail for some morph usb devices

[Lan Tianyu <tianyu.lan@xxxxxxxxx>]

Some morph devices will morph after being reset and cause persist
to fail. This patch is to add descriptor about this in the
Document/usb/persist.txt

Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
 Documentation/usb/persist.txt |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/Documentation/usb/persist.txt b/Documentation/usb/persist.txt
index 074b159..35d70ed 100644
--- a/Documentation/usb/persist.txt
+++ b/Documentation/usb/persist.txt
@@ -155,6 +155,9 @@ If the kernel gets fooled in this way, it's almost certain to cause
 data corruption and to crash your system.  You'll have no one to blame
 but yourself.
 
+For those devices with avoid_reset_quirk attribute being set, persist
+maybe fail because they may morph after reset.
+
 YOU HAVE BEEN WARNED!  USE AT YOUR OWN RISK!
 
 That having been said, most of the time there shouldn't be any trouble
-- 
1.7.6.rc2.8.g28eb

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