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Merge branch 'postmerge' into for-linus

Browse source 
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Bottomley 2013-05-10 07:54:01 -07:00
commit 297b8a0734
4 changed files with 93 additions and 38 deletions
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9
drivers/scsi/scsi_lib.c
View file

@ -276,11 +276,10 @@ int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
}
EXPORT_SYMBOL(scsi_execute);
int scsi_execute_req(struct scsi_device *sdev, const unsigned char *cmd,
int scsi_execute_req_flags(struct scsi_device *sdev, const unsigned char *cmd,
int data_direction, void *buffer, unsigned bufflen,
struct scsi_sense_hdr *sshdr, int timeout, int retries,
int *resid)
int *resid, int flags)
{
char *sense = NULL;
int result;
@ -291,14 +290,14 @@ int scsi_execute_req(struct scsi_device *sdev, const unsigned char *cmd,
return DRIVER_ERROR << 24;
}
result = scsi_execute(sdev, cmd, data_direction, buffer, bufflen,
sense, timeout, retries, 0, resid);
sense, timeout, retries, flags, resid);
if (sshdr)
scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, sshdr);
kfree(sense);
return result;
}
EXPORT_SYMBOL(scsi_execute_req);
EXPORT_SYMBOL(scsi_execute_req_flags);
/*
* Function: scsi_init_cmd_errh()

84
drivers/scsi/scsi_pm.c
View file

@ -144,33 +144,83 @@ 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 *))
{
int err;
err = blk_pre_runtime_suspend(sdev->request_queue);
if (err)
return err;
if (cb)
err = cb(&sdev->sdev_gendev);
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;
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
dev_dbg(dev, "scsi_runtime_suspend\n");
if (scsi_is_sdev_device(dev)) {
err = scsi_dev_type_suspend(dev,
pm ? pm->runtime_suspend : NULL);
if (err == -EAGAIN)
pm_schedule_suspend(dev, jiffies_to_msecs(
round_jiffies_up_relative(HZ/10)));
}
if (scsi_is_sdev_device(dev))
err = sdev_runtime_suspend(dev);
/* Insert hooks here for targets, hosts, and transport classes */
return err;
}
static int sdev_blk_runtime_resume(struct scsi_device *sdev,
int (*cb)(struct device *))
{
int err = 0;
blk_pre_runtime_resume(sdev->request_queue);
if (cb)
err = cb(&sdev->sdev_gendev);
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;
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
dev_dbg(dev, "scsi_runtime_resume\n");
if (scsi_is_sdev_device(dev))
err = scsi_dev_type_resume(dev, pm ? pm->runtime_resume : NULL);
err = sdev_runtime_resume(dev);
/* Insert hooks here for targets, hosts, and transport classes */
@ -185,10 +235,18 @@ static int scsi_runtime_idle(struct device *dev)
/* Insert hooks here for targets, hosts, and transport classes */
if (scsi_is_sdev_device(dev))
err = pm_schedule_suspend(dev, 100);
else
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);
err = pm_runtime_autosuspend(dev);
} else {
err = pm_runtime_suspend(dev);
}
} else {
err = pm_runtime_suspend(dev);
}
return err;
}

22
drivers/scsi/sd.c
View file

@ -1136,10 +1136,6 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
sdev = sdkp->device;
retval = scsi_autopm_get_device(sdev);
if (retval)
goto error_autopm;
/*
* If the device is in error recovery, wait until it is done.
* If the device is offline, then disallow any access to it.
@ -1184,8 +1180,6 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
return 0;
error_out:
scsi_autopm_put_device(sdev);
error_autopm:
scsi_disk_put(sdkp);
return retval;
}
@ -1220,7 +1214,6 @@ static void sd_release(struct gendisk *disk, fmode_t mode)
* XXX is followed by a "rmmod sd_mod"?
*/
scsi_autopm_put_device(sdev);
scsi_disk_put(sdkp);
}
@ -1381,14 +1374,9 @@ static unsigned int sd_check_events(struct gendisk *disk, unsigned int clearing)
retval = -ENODEV;
if (scsi_block_when_processing_errors(sdp)) {
retval = scsi_autopm_get_device(sdp);
if (retval)
goto out;
sshdr = kzalloc(sizeof(*sshdr), GFP_KERNEL);
retval = scsi_test_unit_ready(sdp, SD_TIMEOUT, SD_MAX_RETRIES,
sshdr);
scsi_autopm_put_device(sdp);
}
/* failed to execute TUR, assume media not present */
@ -1438,8 +1426,9 @@ static int sd_sync_cache(struct scsi_disk *sdkp)
* Leave the rest of the command zero to indicate
* flush everything.
*/
res = scsi_execute_req(sdp, cmd, DMA_NONE, NULL, 0, &sshdr,
SD_FLUSH_TIMEOUT, SD_MAX_RETRIES, NULL);
res = scsi_execute_req_flags(sdp, cmd, DMA_NONE, NULL, 0,
&sshdr, SD_FLUSH_TIMEOUT,
SD_MAX_RETRIES, NULL, REQ_PM);
if (res == 0)
break;
}
@ -2857,6 +2846,7 @@ static void sd_probe_async(void *data, async_cookie_t cookie)
sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n",
sdp->removable ? "removable " : "");
blk_pm_runtime_init(sdp->request_queue, dev);
scsi_autopm_put_device(sdp);
put_device(&sdkp->dev);
}
@ -3040,8 +3030,8 @@ static int sd_start_stop_device(struct scsi_disk *sdkp, int start)
if (!scsi_device_online(sdp))
return -ENODEV;
res = scsi_execute_req(sdp, cmd, DMA_NONE, NULL, 0, &sshdr,
SD_TIMEOUT, SD_MAX_RETRIES, NULL);
res = scsi_execute_req_flags(sdp, cmd, DMA_NONE, NULL, 0, &sshdr,
SD_TIMEOUT, SD_MAX_RETRIES, NULL, REQ_PM);
if (res) {
sd_printk(KERN_WARNING, sdkp, "START_STOP FAILED\n");
sd_print_result(sdkp, res);

16
include/scsi/scsi_device.h
View file

@ -394,10 +394,18 @@ extern int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
int data_direction, void *buffer, unsigned bufflen,
unsigned char *sense, int timeout, int retries,
int flag, int *resid);
extern int scsi_execute_req(struct scsi_device *sdev, const unsigned char *cmd,
int data_direction, void *buffer, unsigned bufflen,
struct scsi_sense_hdr *, int timeout, int retries,
int *resid);
extern int scsi_execute_req_flags(struct scsi_device *sdev,
const unsigned char *cmd, int data_direction, void *buffer,
unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
int retries, int *resid, int flags);
static inline int scsi_execute_req(struct scsi_device *sdev,
const unsigned char *cmd, int data_direction, void *buffer,
unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
int retries, int *resid)
{
return scsi_execute_req_flags(sdev, cmd, data_direction, buffer,
bufflen, sshdr, timeout, retries, resid, 0);
}
extern void sdev_disable_disk_events(struct scsi_device *sdev);
extern void sdev_enable_disk_events(struct scsi_device *sdev);