On Thursday 18 October 2007, Benjamin Herrenschmidt wrote:
> This adds a helper to get to the "other" drive on a pair connected
> to a given hwif.
>
> Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
applied
-stable team: please include this patch series in 2.6.23.2
> ---
>
> Note: You may want to use the 1 - select.b.unit construct instead,
> as you prefer, I just used what was there and fixed it.
>
> include/linux/ide.h | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> Index: linux-work/include/linux/ide.h
> ===================================================================
> --- linux-work.orig/include/linux/ide.h 2007-10-18 10:41:42.000000000 +1000
> +++ linux-work/include/linux/ide.h 2007-10-18 10:42:40.000000000 +1000
> @@ -1454,4 +1454,11 @@ static inline int hwif_to_node(ide_hwif_
> return dev ? pcibus_to_node(dev->bus) : -1;
> }
>
> +static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
> +{
> + ide_hwif_t *hwif = HWIF(drive);
> +
> + return &hwif->drives[(drive->dn ^ 1) & 1];
> +}
> +
> #endif /* _IDE_H */
-
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