From 3d2ca91095f8ab6dc0cb925374eec62fa5336764 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sun, 12 Feb 2006 22:47:04 +0900 Subject: [PATCH] libata: separate out ata_id_major_version() Separate out ATA major version calculation from ata_dev_identify() into ata_id_major_version(). It's preparation for splitting ata_dev_identify(). Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/ata.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux/ata.h') diff --git a/include/linux/ata.h b/include/linux/ata.h index a8155ca4947..b02a16c435e 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -267,6 +267,16 @@ struct ata_taskfile { ((u64) (id)[(n) + 1] << 16) | \ ((u64) (id)[(n) + 0]) ) +static inline unsigned int ata_id_major_version(const u16 *id) +{ + unsigned int mver; + + for (mver = 14; mver >= 1; mver--) + if (id[ATA_ID_MAJOR_VER] & (1 << mver)) + break; + return mver; +} + static inline int ata_id_current_chs_valid(const u16 *id) { /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command -- cgit v1.2.3