提交 9ee4f393 编写于 作者: L Lin Ming 提交者: Jeff Garzik

ata: add ata port runtime PM callbacks

Add ata port runtime suspend/resume/idle callbacks.
Set ->eh_noresume to skip the runtime PM calls on scsi host
in the error handler to avoid dead lock.
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NLin Ming <ming.m.lin@intel.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
上级 5ef41082
......@@ -66,6 +66,7 @@
#include <asm/byteorder.h>
#include <linux/cdrom.h>
#include <linux/ratelimit.h>
#include <linux/pm_runtime.h>
#include "libata.h"
#include "libata-transport.h"
......@@ -5307,9 +5308,18 @@ static int ata_port_resume(struct device *dev)
return rc;
}
static int ata_port_runtime_idle(struct device *dev)
{
return pm_runtime_suspend(dev);
}
static const struct dev_pm_ops ata_port_pm_ops = {
.suspend = ata_port_suspend,
.resume = ata_port_resume,
.runtime_suspend = ata_port_suspend_common,
.runtime_resume = ata_port_resume,
.runtime_idle = ata_port_runtime_idle,
};
/**
......
......@@ -3381,6 +3381,7 @@ int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
if (!shost)
goto err_alloc;
shost->eh_noresume = 1;
*(struct ata_port **)&shost->hostdata[0] = ap;
ap->scsi_host = shost;
......
......@@ -32,6 +32,7 @@
#include <linux/libata.h>
#include <linux/hdreg.h>
#include <linux/uaccess.h>
#include <linux/pm_runtime.h>
#include "libata.h"
#include "libata-transport.h"
......@@ -290,6 +291,9 @@ int ata_tport_add(struct device *parent,
goto tport_err;
}
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
transport_add_device(dev);
transport_configure_device(dev);
......
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