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authorTejun Heo <tj@kernel.org>2009-11-18 16:24:21 +0300
committerJeff Garzik <jgarzik@redhat.com>2009-12-03 10:46:33 +0300
commitf2406770a2f62a3d3c0a6f45c2f397b368af668d (patch)
tree15f0a51a7fdbc2e29d66d50196b52436d9f22c9e /drivers/ata/libata-acpi.c
parent22763c5cf3690a681551162c15d34d935308c8d7 (diff)
downloadlinux-f2406770a2f62a3d3c0a6f45c2f397b368af668d.tar.xz
libata-acpi: missing _SDD is not an error
Missing _SDD is not an error. Don't treat it as one. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-acpi.c')
-rw-r--r--drivers/ata/libata-acpi.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index b0882cddfd4c..1245838ac13d 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -807,12 +807,11 @@ static int ata_acpi_exec_tfs(struct ata_device *dev, int *nr_executed)
* EH context.
*
* RETURNS:
- * 0 on success, -errno on failure.
+ * 0 on success, -ENOENT if _SDD doesn't exist, -errno on failure.
*/
static int ata_acpi_push_id(struct ata_device *dev)
{
struct ata_port *ap = dev->link->ap;
- int err;
acpi_status status;
struct acpi_object_list input;
union acpi_object in_params[1];
@@ -835,12 +834,16 @@ static int ata_acpi_push_id(struct ata_device *dev)
status = acpi_evaluate_object(dev->acpi_handle, "_SDD", &input, NULL);
swap_buf_le16(dev->id, ATA_ID_WORDS);
- err = ACPI_FAILURE(status) ? -EIO : 0;
- if (err < 0)
+ if (status == AE_NOT_FOUND)
+ return -ENOENT;
+
+ if (ACPI_FAILURE(status)) {
ata_dev_printk(dev, KERN_WARNING,
"ACPI _SDD failed (AE 0x%x)\n", status);
+ return -EIO;
+ }
- return err;
+ return 0;
}
/**
@@ -971,7 +974,7 @@ int ata_acpi_on_devcfg(struct ata_device *dev)
/* do _SDD if SATA */
if (acpi_sata) {
rc = ata_acpi_push_id(dev);
- if (rc)
+ if (rc && rc != -ENOENT)
goto acpi_err;
}