linux-kernel - Re: block/bsg.c

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Date:	Wed, 18 Jul 2007 02:43:13 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	James Bottomley <James.Bottomley@...eleye.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: block/bsg.c


[ James, please remeber to cc: linux-ide on IDE patches, thanks. ]

On Wednesday 18 July 2007, Jeff Garzik wrote:
> James Bottomley wrote:
> > @@ -1052,9 +1054,10 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
> >  	int err, (*setfunc)(ide_drive_t *, int);
> >  	u8 *val;
> >  
> > -	err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, bdev->bd_disk, cmd, p);
> > -	if (err != -ENOTTY)
> > -		return err;
> > +	switch (cmd) {
> > +	case SG_IO:
> > +		return scsi_cmd_ioctl(file, bdev->bd_disk->queue, bdev->bd_disk, cmd, p);
> > +	}
> >  
> >  	switch (cmd) {
> >  	case HDIO_GET_32BIT:	    val = &drive->io_32bit;	 goto read_val;
> 
> 
> At that point you might as well use an 'if'.
> 
> But overall -- agreed.  ACK.

James/Jeff thanks for following the issue but NAK. ;)

Causes regression wrt ide-floppy CDROMEJECT/CDROMCLOSETRAY support when
compared to 2.6.22 and SG_IO is not supported by ide-{disk,scsi,tape}.

Luckily Linus has already fixed the issue properly.

BTW cmd == 1 IOCTL is not defined/used by IDE driver.

Thanks,
Bart
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