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tty: vt, return error when con_startup fails

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When csw->con_startup() fails in do_register_con_driver, we return no
error (i.e. 0). This was changed back in 2006 by commit 3e795de763.
Before that we used to return -ENODEV.

So fix the return value to be -ENODEV in that case again.

Fixes: 3e795de763 ("VT binding: Add binding/unbinding support for the VT console")
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: "Dan Carpenter" <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2016-05-03 17:05:54 +02:00 committed by Greg Kroah-Hartman
parent 11ca2b7ab4
commit 6798df4c5f
1 changed files with 3 additions and 2 deletions
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5
drivers/tty/vt/vt.c
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@ -3594,9 +3594,10 @@ static int do_register_con_driver(const struct consw *csw, int first, int last)
goto err;
desc = csw->con_startup();
if (!desc)
if (!desc) {
retval = -ENODEV;
goto err;
}
retval = -EINVAL;