diff options
| author | Shane Huang <shane.huang@amd.com> | 2012-11-17 21:44:41 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2012-12-03 10:57:37 +0100 |
| commit | de90cd71f68e947d3bd6c3f2ef5731ead010a768 (patch) | |
| tree | 0a5f7196d4026847fcfa26ecb04389975e8abe9e /drivers/ata | |
| parent | libata: restore acpi disable functionality (diff) | |
| download | linux-de90cd71f68e947d3bd6c3f2ef5731ead010a768.tar.xz linux-de90cd71f68e947d3bd6c3f2ef5731ead010a768.zip | |
libata: check SATA_SETTINGS log with HW Feature Ctrl
NCQ capability was used to check availability of SATA Settings page
from Identify Device Data Log, which contains DevSlp timing variables.
It does not work on some HDDs and leads to error messages.
IDENTIFY word 78 bit 5(Hardware Feature Control) should be used.
Quoting SATA spec 3.1:
If Hardware Feature Control is supported, then:
a) IDENTIFY DEVICE data word 78 bit 5 (see 13.2.1.18) shall be
set to one;
b) the SET FEATURES Select Hardware Feature Control subcommand
shall be supported (see 13.3.8);
c) page 08h of the Identify Device Data log (see 13.7.7) shall
be supported;
This patch is not tested on SATA HDD with DevSlp supported.
Reported-by: Borislav Petkov <bp@amd64.org>
Signed-off-by: Shane Huang <shane.huang@amd.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-core.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index f46fbd3bd3fb..caffe73c1e4a 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2330,9 +2330,8 @@ int ata_dev_configure(struct ata_device *dev) /* Obtain SATA Settings page from Identify Device Data Log, * which contains DevSlp timing variables etc. - * Exclude old devices with ata_id_has_ncq() */ - if (ata_id_has_ncq(dev->id)) { + if (ata_id_has_hw_feature_ctrl(dev->id)) { err_mask = ata_read_log_page(dev, ATA_LOG_SATA_ID_DEV_DATA, ATA_LOG_SATA_SETTINGS, |