4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx> commit 8a500df63d07d8aee44b7ee2c54e462e47ce93ec upstream. The SWIM chip is compatible with GCR-mode Sony 400K/800K drives but this driver only supports MFM mode. Therefore only Sony FDHD drives are supported. Skip incompatible drives. Cc: Laurent Vivier <lvivier@xxxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx # v4.14+ Tested-by: Stan Johnson <userm57@xxxxxxxxx> Signed-off-by: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx> Acked-by: Laurent Vivier <lvivier@xxxxxxxxxx> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/block/swim.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/block/swim.c +++ b/drivers/block/swim.c @@ -834,10 +834,12 @@ static int swim_floppy_init(struct swim_ /* scan floppy drives */ swim_drive(base, INTERNAL_DRIVE); - if (swim_readbit(base, DRIVE_PRESENT)) + if (swim_readbit(base, DRIVE_PRESENT) && + !swim_readbit(base, ONEMEG_DRIVE)) swim_add_floppy(swd, INTERNAL_DRIVE); swim_drive(base, EXTERNAL_DRIVE); - if (swim_readbit(base, DRIVE_PRESENT)) + if (swim_readbit(base, DRIVE_PRESENT) && + !swim_readbit(base, ONEMEG_DRIVE)) swim_add_floppy(swd, EXTERNAL_DRIVE); /* register floppy drives */