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Johan Hovold
7e7797e7f6
Fix potential null-pointer exception on disconnect introduced by commit
11ea859d64 (USB: additional power savings
for cdc-acm devices that support remote wakeup).
Only access acm->dev after making sure it is non-null in control urb
completion handler.
Cc: stable <[email protected]>
Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>