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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-10 22:39:30 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-10 22:39:30 +0200 |
| commit | 367d7e78dd48cf6ad35182a99d97abb5486e040e (patch) | |
| tree | 70635fc87e0f094018870346577b3d84caefe61c /include/linux/ata.h | |
| parent | 5d5870f0a26e2304c4a82592870c5bc88017f7c9 (diff) | |
| download | linux-367d7e78dd48cf6ad35182a99d97abb5486e040e.tar.gz linux-367d7e78dd48cf6ad35182a99d97abb5486e040e.tar.bz2 linux-367d7e78dd48cf6ad35182a99d97abb5486e040e.zip | |
ide: ide_dev_is_sata() -> ata_id_is_sata()
* 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>
Diffstat (limited to 'include/linux/ata.h')
| -rw-r--r-- | include/linux/ata.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index be00973d1a8c..d28aad991c75 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -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) |