s390/3215: fix tty output containing tabs

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commit e512d56c79 upstream.

git commit 37f81fa1f6
"n_tty: do O_ONLCR translation as a single write"
surfaced a bug in the 3215 device driver. In combination this
broke tab expansion for tty ouput.

The cause is an asymmetry in the behaviour of tty3215_ops->write
vs tty3215_ops->put_char. The put_char function scans for '\t'
but the write function does not.

As the driver has logic for the '\t' expansion remove XTABS
from c_oflag of the initial termios as well.

Reported-by: Stephen Powell <zlinuxman@wowway.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Martin Schwidefsky 2014-08-13 12:01:30 +02:00 • committed by Greg Kroah-Hartman

parent 38b1b3c126

commit 72ff8bbada

1 changed files with 17 additions and 3 deletions

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drivers/s390/char/con3215.c

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