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| author | Jiri Slaby <jslaby@suse.cz> | 2012-03-05 14:52:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-08 11:42:21 -0800 |
| commit | 410235fd4d20b8feaf8930a0575d23acc088aa87 (patch) | |
| tree | ad21d071a29ef0ad400393328ca4ab0588d5b2b7 /drivers/tty/amiserial.c | |
| parent | 44a1bfd95d0a6c0096e79a883197596e1ce83cc3 (diff) | |
| download | linux-410235fd4d20b8feaf8930a0575d23acc088aa87.tar.gz linux-410235fd4d20b8feaf8930a0575d23acc088aa87.tar.bz2 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/tty/amiserial.c')
| -rw-r--r-- | drivers/tty/amiserial.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c index b42f00d987ae..753286257554 100644 --- a/drivers/tty/amiserial.c +++ b/drivers/tty/amiserial.c @@ -1768,13 +1768,9 @@ static int get_async_struct(int line, struct async_struct **ret_info) static int rs_open(struct tty_struct *tty, struct file * filp) { struct async_struct *info; - int retval, line; + int retval; - line = tty->index; - if ((line < 0) || (line >= NR_PORTS)) { - return -ENODEV; - } - retval = get_async_struct(line, &info); + retval = get_async_struct(tty->index, &info); if (retval) { return retval; } @@ -1964,7 +1960,7 @@ static int __init amiga_serial_probe(struct platform_device *pdev) struct serial_state * state; int error; - serial_driver = alloc_tty_driver(1); + serial_driver = alloc_tty_driver(NR_PORTS); if (!serial_driver) return -ENOMEM; |