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| author | Jiri Slaby <jslaby@suse.cz> | 2012-03-05 14:52:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-08 21:51:13 +0100 |
| commit | 52b762f7a94c88e5a8aa2be67a06a6f01020cc82 (patch) | |
| tree | 637b42adc531c7cfd1e5b3c374fa19b84e5864ba /arch/parisc | |
| parent | TTY: pdc_cons, fix racy tty test (diff) | |
| download | linux-52b762f7a94c88e5a8aa2be67a06a6f01020cc82.tar.xz linux-52b762f7a94c88e5a8aa2be67a06a6f01020cc82.zip | |
TTY: pdc_cons, fix open vs timer race
The timer is initialized too late. tty->open may fire an invalid
timer. So initialize the timer earlier using DEFINE_TIMER.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/kernel/pdc_cons.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c index c1db65fc4525..8ad05215d4b1 100644 --- a/arch/parisc/kernel/pdc_cons.c +++ b/arch/parisc/kernel/pdc_cons.c @@ -90,7 +90,8 @@ static int pdc_console_setup(struct console *co, char *options) #define PDC_CONS_POLL_DELAY (30 * HZ / 1000) -static struct timer_list pdc_console_timer; +static void pdc_console_poll(unsigned long unused); +static DEFINE_TIMER(pdc_console_timer, pdc_console_poll, 0, 0); static int pdc_console_tty_open(struct tty_struct *tty, struct file *filp) { @@ -205,10 +206,6 @@ static int __init pdc_console_tty_driver_init(void) pdc_console_tty_driver = drv; - /* No need to initialize the pdc_console_timer if tty isn't allocated */ - init_timer(&pdc_console_timer); - pdc_console_timer.function = pdc_console_poll; - return 0; } |