@@ -17,6 +17,7 @@
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
+#include <linux/pm_qos.h>
#include <scsi/scsi_device.h>
#include "libata.h"
@@ -1022,6 +1023,8 @@ static void ata_acpi_unregister_power_resource(struct ata_device *dev)
void ata_acpi_bind(struct ata_device *dev)
{
ata_acpi_register_power_resource(dev);
+ if (zpodd_dev_enabled(dev))
+ dev_pm_qos_expose_flags(&dev->sdev->sdev_gendev, 0);
}
void ata_acpi_unbind(struct ata_device *dev)
@@ -150,6 +150,7 @@ void zpodd_on_suspend(struct ata_device *dev)
if (!zpready(dev)) {
zpodd->zp_sampled = false;
+ zpodd->zp_ready = false;
return;
}
Expose pm qos flags to user space so that user has a chance to disable ZPODD feature, if he/she has a broken platform or devices or simply does not like this feature. This flag is exposed to user space only for ZPODD devices. Due to this flag, it is possible the ODD is ZP ready but we didn't power it off. So the zp_ready flag will need to be cleared whenever we found the ODD is not in ZP ready state. Previously, once zp_ready is set, the ODD will always be powered off and the flag will be cleared in post_poweron. But this is no longer the case now. Signed-off-by: Aaron Lu <aaron.lu@intel.com> --- drivers/ata/libata-acpi.c | 3 +++ drivers/ata/libata-zpodd.c | 1 + 2 files changed, 4 insertions(+)