Re: sense visible despite ide-floppy in 2.6 maybe

[Jens Axboe <axboe@suse.de>]

On Wed, Jun 09 2004, Pat LaVarre wrote:
> Jens A:
> 
> > > a) ...
> > > ...
> > > e) ...
> > ...
> > f) issue some command that transfers data as well.
> 
> I tried an op x12 (18) Inquiry for up to x24 (36) bytes.
> 
> I got back zeroes even when I memset my data originally to equal
> catenated copies of "\xAE" (174).
> 
> Under such provocations, dmesg then consistently reports:
> 
> hdd: The disk reports a capacity of 250640384 bytes, but the drive only handles 250609664
> hdd: unknown partition table
> hdd: leftover data in idefloppy_input_buffers, bcount == 36

Ah that's a good hint. Can you try changing the pc->buffer = NULL in
idefloppy_blockpc_cmd() to pc->buffer = rq->data? Also, only set
PC_DMA_RECOMMENDED if it isn't set. Something ala

	pc->buffer = rq->data;
	if (rq->bio)
		set_bit(PC_DMA_RECOMMENDED, &pc->flags);

that should work, I think. Do this on top of the patch you are already
using.

-- 
Jens Axboe