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path: root/drivers/ata/libata-scsi.c
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Diffstat (limited to 'drivers/ata/libata-scsi.c')
-rw-r--r--drivers/ata/libata-scsi.c38
1 files changed, 31 insertions, 7 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 9e92107691f..b9747fa59e5 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -46,6 +46,7 @@
#include <linux/libata.h>
#include <linux/hdreg.h>
#include <linux/uaccess.h>
+#include <linux/suspend.h>
#include "libata.h"
@@ -414,6 +415,7 @@ int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
/**
* ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl
+ * @ap: target port
* @sdev: SCSI device to get identify data for
* @arg: User buffer area for identify data
*
@@ -423,9 +425,9 @@ int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
* RETURNS:
* Zero on success, negative errno on error.
*/
-static int ata_get_identity(struct scsi_device *sdev, void __user *arg)
+static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev,
+ void __user *arg)
{
- struct ata_port *ap = ata_shost_to_port(sdev->host);
struct ata_device *dev = ata_scsi_find_dev(ap, sdev);
u16 __user *dst = arg;
char buf[40];
@@ -645,7 +647,8 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
return rc;
}
-int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
+int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
+ int cmd, void __user *arg)
{
int val = -EINVAL, rc = -EINVAL;
@@ -663,7 +666,7 @@ int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
return 0;
case HDIO_GET_IDENTITY:
- return ata_get_identity(scsidev, arg);
+ return ata_get_identity(ap, scsidev, arg);
case HDIO_DRIVE_CMD:
if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
@@ -682,6 +685,14 @@ int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
return rc;
}
+EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl);
+
+int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
+{
+ return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host),
+ scsidev, cmd, arg);
+}
+EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
/**
* ata_scsi_qc_new - acquire new ata_queued_cmd reference
@@ -1294,6 +1305,17 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
tf->command = ATA_CMD_VERIFY; /* READ VERIFY */
} else {
+ /* Some odd clown BIOSen issue spindown on power off (ACPI S4
+ * or S5) causing some drives to spin up and down again.
+ */
+ if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) &&
+ system_state == SYSTEM_POWER_OFF)
+ goto skip;
+
+ if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) &&
+ system_entering_hibernation())
+ goto skip;
+
/* XXX: This is for backward compatibility, will be
* removed. Read Documentation/feature-removal-schedule.txt
* for more info.
@@ -1317,8 +1339,7 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
scmd->scsi_done = qc->scsidone;
qc->scsidone = ata_delayed_done;
}
- scmd->result = SAM_STAT_GOOD;
- return 1;
+ goto skip;
}
/* Issue ATA STANDBY IMMEDIATE command */
@@ -1334,10 +1355,13 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
return 0;
-invalid_fld:
+ invalid_fld:
ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
/* "Invalid field in cbd" */
return 1;
+ skip:
+ scmd->result = SAM_STAT_GOOD;
+ return 1;
}