diff options
| author | Kees Cook <keescook@chromium.org> | 2017-10-04 17:49:29 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-11-14 20:10:35 -0700 |
| commit | b1bf42105aad7c976907665923bc53ce2244e494 (patch) | |
| tree | 6d8902d88f504e15a7d3375790e2838acf7925d0 /drivers/block/floppy.c | |
| parent | 37cb8e1f8e10c6e9bd2a1b95cdda0620a21b0551 (diff) | |
| download | lwn-b1bf42105aad7c976907665923bc53ce2244e494.tar.gz lwn-b1bf42105aad7c976907665923bc53ce2244e494.zip | |
block/floppy: Convert callback to pass timer_list
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to passing in the timer pointer explicitly.
Calculate the drive from the offset of the timer in the timer list.
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Ming Lei <tom.leiming@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Geliang Tang <geliangtang@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/floppy.c')
| -rw-r--r-- | drivers/block/floppy.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index a54183935aa1..eae484acfbbc 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -903,10 +903,14 @@ static void unlock_fdc(void) } /* switches the motor off after a given timeout */ -static void motor_off_callback(unsigned long nr) +static void motor_off_callback(struct timer_list *t) { + unsigned long nr = t - motor_off_timer; unsigned char mask = ~(0x10 << UNIT(nr)); + if (WARN_ON_ONCE(nr >= N_DRIVE)) + return; + set_dor(FDC(nr), mask, 0); } @@ -3047,7 +3051,7 @@ static void raw_cmd_done(int flag) else raw_cmd->flags &= ~FD_RAW_DISK_CHANGE; if (raw_cmd->flags & FD_RAW_NO_MOTOR_AFTER) - motor_off_callback(current_drive); + motor_off_callback(&motor_off_timer[current_drive]); if (raw_cmd->next && (!(raw_cmd->flags & FD_RAW_FAILURE) || @@ -4542,7 +4546,7 @@ static int __init do_floppy_init(void) disks[drive]->fops = &floppy_fops; sprintf(disks[drive]->disk_name, "fd%d", drive); - setup_timer(&motor_off_timer[drive], motor_off_callback, drive); + timer_setup(&motor_off_timer[drive], motor_off_callback, 0); } err = register_blkdev(FLOPPY_MAJOR, "fd"); |