diff options
| author |   Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> | 2012-08-27 20:56:55 -0300 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2012-10-30 08:34:25 +0100 |
| commit | 8d3ab4ebfd7435bc248873de47d0ca23076c4973 (patch) | |
| tree | 7e042c6419e63f9c4ec19de6bacde87450164976 /drivers/block/floppy.c | |
| parent | floppy: properly handle failure on add_disk loop (diff) | |
| download | linux-dev-8d3ab4ebfd7435bc248873de47d0ca23076c4973.tar.xz linux-dev-8d3ab4ebfd7435bc248873de47d0ca23076c4973.zip | |
floppy: use common function to check if floppies can be registered
The same checks to see if a drive can be or is registered are
repeated through the code, factor out the checks in a common function
and replace the repeated checks with it.
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/floppy.c')
| -rw-r--r-- | drivers/block/floppy.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 2c7257334b64..d54b234a1a67 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -4109,12 +4109,19 @@ static struct platform_driver floppy_driver = { static struct platform_device floppy_device[N_DRIVE]; +static bool floppy_available(int drive) +{ + if (!(allowed_drive_mask & (1 << drive))) + return false; + if (fdc_state[FDC(drive)].version == FDC_NONE) + return false; + return true; +} + static struct kobject *floppy_find(dev_t dev, int *part, void *data) { int drive = (*part & 3) | ((*part & 0x80) >> 5); - if (drive >= N_DRIVE || - !(allowed_drive_mask & (1 << drive)) || - fdc_state[FDC(drive)].version == FDC_NONE) + if (drive >= N_DRIVE || !floppy_available(drive)) return NULL; if (((*part >> 2) & 0x1f) >= ARRAY_SIZE(floppy_type)) return NULL; @@ -4281,9 +4288,7 @@ static int __init do_floppy_init(void) } for (drive = 0; drive < N_DRIVE; drive++) { - if (!(allowed_drive_mask & (1 << drive))) - continue; - if (fdc_state[FDC(drive)].version == FDC_NONE) + if (!floppy_available(drive)) continue; floppy_device[drive].name = floppy_device_name; @@ -4312,8 +4317,7 @@ out_unreg_platform_dev: platform_device_unregister(&floppy_device[drive]); out_remove_drives: while (drive--) { - if ((allowed_drive_mask & (1 << drive)) && - fdc_state[FDC(drive)].version != FDC_NONE) { + if (floppy_available(drive)) { del_gendisk(disks[drive]); device_remove_file(&floppy_device[drive].dev, &dev_attr_cmos); platform_device_unregister(&floppy_device[drive]); @@ -4558,8 +4562,7 @@ static void __exit floppy_module_exit(void) for (drive = 0; drive < N_DRIVE; drive++) { del_timer_sync(&motor_off_timer[drive]); - if ((allowed_drive_mask & (1 << drive)) && - fdc_state[FDC(drive)].version != FDC_NONE) { + if (floppy_available(drive)) { del_gendisk(disks[drive]); device_remove_file(&floppy_device[drive].dev, &dev_attr_cmos); platform_device_unregister(&floppy_device[drive]); |