Re: 2.6.11-rc4-mm1 (VFS: Cannot open root device "301")

[Matt Mackall <mpm@selenic.com>]

On Wed, Feb 23, 2005 at 04:16:53PM -0800, Andrew Morton wrote:
> Steven Cole <elenstev@mesatop.com> wrote:
> >
> > > Yes, that worked.  2.6.11-rc4-mm1 now boots OK, but hdb1 seems to be 
> > > missing.
> 
> Looking at the IDE update in rc4-mm1:
> 
> +void ide_init_disk(struct gendisk *disk, ide_drive_t *drive)
> +{
> +	ide_hwif_t *hwif = drive->hwif;
> +	unsigned int unit = drive->select.all & (1 << 4);
> +
> +	disk->major = hwif->major;
> +	disk->first_minor = unit << PARTN_BITS;
> +	sprintf(disk->disk_name, "hd%c", 'a' + hwif->index * MAX_DRIVES + unit);
> +	disk->queue = drive->queue;
> +}
> 
> Looks funny.
> 
> Could someone try this?
> 
> -	unsigned int unit = drive->select.all & (1 << 4);
> +	unsigned int unit = (drive->select.all >> 4) & 1;

Apparently there's already an 'hdb' sitting in drive->name, perhaps we
ought to do disk->disk_name = drive->name for the non-devfs case.

-- 
Mathematics is the supreme nostalgia of our time.