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SubjectRe: [PATCH v3 5/6] floppy: use disk_registered for checking if a drive is present
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On Mon, 2012-08-13 at 15:16 -0300, Herton Ronaldo Krzesinski wrote:
> Simplify/cleanup code, replacing remaining checks for drives present
> using disk_registered array.
>
> Acked-by: Vivek Goyal <vgoyal@redhat.com>
> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
> ---
> drivers/block/floppy.c | 10 +++-------
> 1 file changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
> index 3eafe93..381b9c1 100644
> --- a/drivers/block/floppy.c
> +++ b/drivers/block/floppy.c
> @@ -4114,9 +4114,7 @@ static struct platform_device floppy_device[N_DRIVE];
> 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 || !disk_registered[drive])
> return NULL;
> if (((*part >> 2) & 0x1f) >= ARRAY_SIZE(floppy_type))
> return NULL;
> @@ -4561,8 +4559,7 @@ 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 (disk_registered[drive]) {
> del_gendisk(disks[drive]);
> device_remove_file(&floppy_device[drive].dev, &dev_attr_cmos);
> platform_device_unregister(&floppy_device[drive]);

The same function I suggested for 4/6 would also be used here. A little
neater than yet another static array, I think. But I have nothing to do
with this code so you could just ignore my preferences. :-)

Ben.

> @@ -4573,8 +4570,7 @@ static void __exit floppy_module_exit(void)
> * These disks have not called add_disk(). Don't put down
> * queue reference in put_disk().
> */
> - if (!(allowed_drive_mask & (1 << drive)) ||
> - fdc_state[FDC(drive)].version == FDC_NONE)
> + if (!disk_registered[drive])
> disks[drive]->queue = NULL;
>
> put_disk(disks[drive]);

--
Ben Hutchings
I say we take off; nuke the site from orbit. It's the only way to be sure.
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