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>
diff --git a/include/linux/ata.h b/include/linux/ata.h
index be00973d..d28aad9 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -645,7 +645,15 @@
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)