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authorJiri Slaby <jslaby@suse.cz>2012-03-05 14:52:01 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-03-08 20:42:21 +0100
commit410235fd4d20b8feaf8930a0575d23acc088aa87 (patch)
treead21d071a29ef0ad400393328ca4ab0588d5b2b7 /drivers/isdn/gigaset/common.c
parentTTY: serialP, remove DECLARE_WAITQUEUE check (diff)
downloadlinux-410235fd4d20b8feaf8930a0575d23acc088aa87.tar.xz
linux-410235fd4d20b8feaf8930a0575d23acc088aa87.zip
TTY: remove unneeded tty->index checks
Checking if tty->index is in bounds is not needed. The tty has the index set in the initial open. This is done in get_tty_driver. And it can be only in interval <0,driver->num). So remove the tests which check exactly this interval. Some are left untouched as they check against the current backing device count. (Leaving apart that the check is racy in most of the cases.) Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/isdn/gigaset/common.c')
-rw-r--r--drivers/isdn/gigaset/common.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c
index db621db67f61..ac0186e54bf4 100644
--- a/drivers/isdn/gigaset/common.c
+++ b/drivers/isdn/gigaset/common.c
@@ -1051,8 +1051,6 @@ static struct cardstate *gigaset_get_cs_by_minor(unsigned minor)
struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty)
{
- if (tty->index < 0 || tty->index >= tty->driver->num)
- return NULL;
return gigaset_get_cs_by_minor(tty->index + tty->driver->minor_start);
}