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ide: ide_dev_is_sata() -> ata_id_is_sata()

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* Use optimized ATA version check from Sergei in ata_id_is_sata().

* ide_dev_is_sata() -> ata_id_is_sata()

Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-10-10 22:39:30 +02:00
parent 5d5870f0a2
commit 367d7e78dd
4 changed files with 12 additions and 17 deletions
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10
include/linux/ata.h
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@ -645,7 +645,15 @@ static inline unsigned int ata_id_major_version(const u16 *id)
static inline int ata_id_is_sata(const u16 *id)
{
return ata_id_major_version(id) >= 5 && id[ATA_ID_HW_CONFIG] == 0;
/*
* See if word 93 is 0 AND drive is at least ATA-5 compatible
* verifying that word 80 by casting it to a signed type --
* this trick allows us to filter out the reserved values of
* 0x0000 and 0xffff along with the earlier ATA revisions...
*/
if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
return 1;
return 0;
}
static inline int ata_id_has_tpm(const u16 *id)