diff options
author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-10-18 18:30:05 -0400 |
---|---|---|
committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-18 18:30:05 -0400 |
commit | 1b678347121001c3c230c6eccfdf9f65c3ec1a4e (patch) | |
tree | 06fbd912de1d6cb032db4a25868fb8600d344c06 /include/linux | |
parent | d85714d81cc0408daddb68c10f7fd69eafe7c213 (diff) |
ide: Add ide_get_paired_drive() helper
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>
Diffstat (limited to 'include/linux')
-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 e39ee2fa2607..69dbe7dc04be 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h | |||
@@ -1454,4 +1454,11 @@ static inline int hwif_to_node(ide_hwif_t *hwif) | |||
1454 | return dev ? pcibus_to_node(dev->bus) : -1; | 1454 | return dev ? pcibus_to_node(dev->bus) : -1; |
1455 | } | 1455 | } |
1456 | 1456 | ||
1457 | static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive) | ||
1458 | { | ||
1459 | ide_hwif_t *hwif = HWIF(drive); | ||
1460 | |||
1461 | return &hwif->drives[(drive->dn ^ 1) & 1]; | ||
1462 | } | ||
1463 | |||
1457 | #endif /* _IDE_H */ | 1464 | #endif /* _IDE_H */ |