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slcan: fix ldisc->open retval

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TTY layer expects 0 if the ldisc->open operation succeeded.

Reported-by: Matvejchikov Ilya <matvejchikov@gmail.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oliver Hartkopp 2011-05-10 13:12:30 -07:00 • committed by David S. Miller
parent aae1e743fe
commit 0d4420a90b
1 changed files with 3 additions and 1 deletions
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4
drivers/net/can/slcan.c
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@ -583,7 +583,9 @@ static int slcan_open(struct tty_struct *tty)
/* Done. We have linked the TTY line to a channel. */
rtnl_unlock();
tty->receive_room = 65536; /* We don't flow control */
return sl->dev->base_addr;
/* TTY layer expects 0 on success */
return 0;
err_free_chan:
sl->tty = NULL;