diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-10-19 00:30:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-11-16 09:30:23 -0800 |
| commit | 61c5c64a1d07ffec6e1b511a680bd3c53b1d490a (patch) | |
| tree | a303e9f300a712722e5d1b6037d036bc93dd3f4d | |
| parent | bd9f792ffdfbc6b7457e406a82e1e62c122d9c8a (diff) | |
ide: Add ide_get_paired_drive() helper
patch 1b678347121001c3c230c6eccfdf9f65c3ec1a4e in mainline.
This adds a helper to get to the "other" drive on a pair connected
to a given hwif.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andrew Morton <akpm@osdl.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | include/linux/ide.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h index b9f66c10caa..20528c0b604 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -1437,4 +1437,11 @@ static inline int hwif_to_node(ide_hwif_t *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 */ |