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-rw-r--r--drivers/scsi/scsi_pm.c62
-rw-r--r--drivers/scsi/sr.c37
2 files changed, 29 insertions, 70 deletions
diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index af4c050ce6e4..001e9ceda4c3 100644
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c
@@ -16,6 +16,8 @@
#include "scsi_priv.h"
+#ifdef CONFIG_PM_SLEEP
+
static int scsi_dev_type_suspend(struct device *dev, int (*cb)(struct device *))
{
int err;
@@ -43,8 +45,6 @@ static int scsi_dev_type_resume(struct device *dev, int (*cb)(struct device *))
return err;
}
-#ifdef CONFIG_PM_SLEEP
-
static int
scsi_bus_suspend_common(struct device *dev, int (*cb)(struct device *))
{
@@ -145,38 +145,22 @@ static int scsi_bus_restore(struct device *dev)
#ifdef CONFIG_PM_RUNTIME
-static int sdev_blk_runtime_suspend(struct scsi_device *sdev,
- int (*cb)(struct device *))
+static int sdev_runtime_suspend(struct device *dev)
{
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ struct scsi_device *sdev = to_scsi_device(dev);
int err;
err = blk_pre_runtime_suspend(sdev->request_queue);
if (err)
return err;
- if (cb)
- err = cb(&sdev->sdev_gendev);
+ if (pm && pm->runtime_suspend)
+ err = pm->runtime_suspend(dev);
blk_post_runtime_suspend(sdev->request_queue, err);
return err;
}
-static int sdev_runtime_suspend(struct device *dev)
-{
- const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
- int (*cb)(struct device *) = pm ? pm->runtime_suspend : NULL;
- struct scsi_device *sdev = to_scsi_device(dev);
- int err;
-
- if (sdev->request_queue->dev)
- return sdev_blk_runtime_suspend(sdev, cb);
-
- err = scsi_dev_type_suspend(dev, cb);
- if (err == -EAGAIN)
- pm_schedule_suspend(dev, jiffies_to_msecs(
- round_jiffies_up_relative(HZ/10)));
- return err;
-}
-
static int scsi_runtime_suspend(struct device *dev)
{
int err = 0;
@@ -190,31 +174,20 @@ static int scsi_runtime_suspend(struct device *dev)
return err;
}
-static int sdev_blk_runtime_resume(struct scsi_device *sdev,
- int (*cb)(struct device *))
+static int sdev_runtime_resume(struct device *dev)
{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int err = 0;
blk_pre_runtime_resume(sdev->request_queue);
- if (cb)
- err = cb(&sdev->sdev_gendev);
+ if (pm && pm->runtime_resume)
+ err = pm->runtime_resume(dev);
blk_post_runtime_resume(sdev->request_queue, err);
return err;
}
-static int sdev_runtime_resume(struct device *dev)
-{
- struct scsi_device *sdev = to_scsi_device(dev);
- const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
- int (*cb)(struct device *) = pm ? pm->runtime_resume : NULL;
-
- if (sdev->request_queue->dev)
- return sdev_blk_runtime_resume(sdev, cb);
- else
- return scsi_dev_type_resume(dev, cb);
-}
-
static int scsi_runtime_resume(struct device *dev)
{
int err = 0;
@@ -235,14 +208,11 @@ static int scsi_runtime_idle(struct device *dev)
/* Insert hooks here for targets, hosts, and transport classes */
if (scsi_is_sdev_device(dev)) {
- struct scsi_device *sdev = to_scsi_device(dev);
-
- if (sdev->request_queue->dev) {
- pm_runtime_mark_last_busy(dev);
- pm_runtime_autosuspend(dev);
- return -EBUSY;
- }
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_autosuspend(dev);
+ return -EBUSY;
}
+
return 0;
}
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 119d67f9c47e..40d85929aefe 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -161,14 +161,10 @@ static inline struct scsi_cd *scsi_cd_get(struct gendisk *disk)
goto out;
cd = scsi_cd(disk);
kref_get(&cd->kref);
- if (scsi_device_get(cd->device))
- goto out_put;
- if (!scsi_autopm_get_device(cd->device))
- goto out;
-
- out_put:
- kref_put(&cd->kref, sr_kref_release);
- cd = NULL;
+ if (scsi_device_get(cd->device)) {
+ kref_put(&cd->kref, sr_kref_release);
+ cd = NULL;
+ }
out:
mutex_unlock(&sr_ref_mutex);
return cd;
@@ -180,7 +176,6 @@ static void scsi_cd_put(struct scsi_cd *cd)
mutex_lock(&sr_ref_mutex);
kref_put(&cd->kref, sr_kref_release);
- scsi_autopm_put_device(sdev);
scsi_device_put(sdev);
mutex_unlock(&sr_ref_mutex);
}
@@ -558,8 +553,6 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
void __user *argp = (void __user *)arg;
int ret;
- scsi_autopm_get_device(cd->device);
-
mutex_lock(&sr_mutex);
/*
@@ -591,7 +584,6 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
out:
mutex_unlock(&sr_mutex);
- scsi_autopm_put_device(cd->device);
return ret;
}
@@ -599,17 +591,11 @@ static unsigned int sr_block_check_events(struct gendisk *disk,
unsigned int clearing)
{
struct scsi_cd *cd = scsi_cd(disk);
- unsigned int ret;
- if (atomic_read(&cd->device->disk_events_disable_depth) == 0) {
- scsi_autopm_get_device(cd->device);
- ret = cdrom_check_events(&cd->cdi, clearing);
- scsi_autopm_put_device(cd->device);
- } else {
- ret = 0;
- }
+ if (atomic_read(&cd->device->disk_events_disable_depth))
+ return 0;
- return ret;
+ return cdrom_check_events(&cd->cdi, clearing);
}
static int sr_block_revalidate_disk(struct gendisk *disk)
@@ -617,8 +603,6 @@ static int sr_block_revalidate_disk(struct gendisk *disk)
struct scsi_cd *cd = scsi_cd(disk);
struct scsi_sense_hdr sshdr;
- scsi_autopm_get_device(cd->device);
-
/* if the unit is not ready, nothing more to do */
if (scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
goto out;
@@ -626,7 +610,6 @@ static int sr_block_revalidate_disk(struct gendisk *disk)
sr_cd_check(&cd->cdi);
get_sectorsize(cd);
out:
- scsi_autopm_put_device(cd->device);
return 0;
}
@@ -747,6 +730,12 @@ static int sr_probe(struct device *dev)
if (register_cdrom(&cd->cdi))
goto fail_put;
+ /*
+ * Initialize block layer runtime PM stuffs before the
+ * periodic event checking request gets started in add_disk.
+ */
+ blk_pm_runtime_init(sdev->request_queue, dev);
+
dev_set_drvdata(dev, cd);
disk->flags |= GENHD_FL_REMOVABLE;
add_disk(disk);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.