diff options
| author | Tejun Heo <htejun@gmail.com> | 2008-01-24 00:05:14 +0900 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 15:44:16 -0400 |
| commit | 8cebf274dd1c955a6e03385a85fd6569ce445946 (patch) | |
| tree | c459cd20ef93413e063826bb99ca0bcaf67ec8d2 /drivers/ata/libata-core.c | |
| parent | 672b2d65ba83a6f3f801fd3d58851aa9c0725a54 (diff) | |
libata: kill ATA_LFLAG_SKIP_D2H_BSY
Some controllers can't reliably record the initial D2H FIS after SATA
link is brought online for whatever reason. Advanced controllers
which don't have traditional TF register based interface often have
this problem as they don't really have the TF registers to update
while the controller and link are being initialized.
SKIP_D2H_BSY works around the problem by skipping the wait for device
readiness before issuing SRST, so for such controllers libata issues
SRST blindly and hopes for the best.
Now that libata defaults to hardreset, this workaround is no longer
necessary. For controllers which have support for hardreset, SRST is
never issued by itself. It is only issued as follow-up SRST for
device classification and PMP initialization, so there's no need to
wait for it from prereset.
Kill ATA_LFLAG_SKIP_D2H_BSY.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 02e7ba43a3b3..baef749ec528 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3962,10 +3962,8 @@ int ata_std_prereset(struct ata_link *link, unsigned long deadline) "link for reset (errno=%d)\n", rc); } - /* Wait for !BSY if the controller can wait for the first D2H - * Reg FIS and we don't know that no device is attached. - */ - if (!(link->flags & ATA_LFLAG_SKIP_D2H_BSY) && !ata_link_offline(link)) { + /* wait for !BSY if we don't know that no device is attached */ + if (!ata_link_offline(link)) { rc = ata_wait_ready(ap, deadline); if (rc && rc != -ENODEV) { ata_link_printk(link, KERN_WARNING, "device not ready " |