Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6c3c22f3cb2b7cd0a42a024b93db76b5c3133d37
Commit: 6c3c22f3cb2b7cd0a42a024b93db76b5c3133d37
Parent: 7293136810936bbde403bcb67ac1b4dbae4dd790
Author: Sergei Shtylyov <[EMAIL PROTECTED]>
AuthorDate: Tue Sep 11 22:28:36 2007 +0200
Committer: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
CommitDate: Tue Sep 11 22:28:36 2007 +0200
ide: add ide_dev_is_sata() helper (take 2)
Make the SATA drive detection code from eighty_ninty_three() into inline
ide_dev_is_sata() helper fixing it along the way to be more strict while
checking word 80 for the reserved values...
Signed-off-by: Sergei Shtylyov <[EMAIL PROTECTED]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
---
drivers/ide/ide-iops.c | 3 +--
include/linux/ide.h | 13 +++++++++++++
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index f4cd270..646a54e 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -615,8 +615,7 @@ u8 eighty_ninty_three (ide_drive_t *drive)
if (hwif->cbl != ATA_CBL_PATA80 && !ivb)
goto no_80w;
- /* Check for SATA but only if we are ATA5 or higher */
- if (id->hw_config == 0 && (id->major_rev_num & 0x7FE0))
+ if (ide_dev_is_sata(id))
return 1;
/*
diff --git a/include/linux/ide.h b/include/linux/ide.h
index c792b4f..b9f66c1 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1378,6 +1378,19 @@ static inline int ide_dev_has_iordy(struct hd_driveid
*id)
return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
}
+static inline int ide_dev_is_sata(struct hd_driveid *id)
+{
+ /*
+ * 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->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
+ return 1;
+ return 0;
+}
+
u8 ide_dump_status(ide_drive_t *, const char *, u8);
typedef struct ide_pio_timings_s {
-
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