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osd: Convert to new IDA API 

Slightly simpler code.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox 2018-06-11 15:41:25 -04:00
parent 9401508012
commit 5963e78d0c
1 changed files with 7 additions and 15 deletions
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22
drivers/scsi/osd/osd_uld.c
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@ -423,19 +423,11 @@ static int osd_probe(struct device *dev)
if (scsi_device->type != TYPE_OSD)
return -ENODEV;
do {
if (!ida_pre_get(&osd_minor_ida, GFP_KERNEL))
return -ENODEV;
error = ida_get_new(&osd_minor_ida, &minor);
} while (error == -EAGAIN);
if (error)
return error;
if (minor >= SCSI_OSD_MAX_MINOR) {
error = -EBUSY;
goto err_retract_minor;
}
minor = ida_alloc_max(&osd_minor_ida, SCSI_OSD_MAX_MINOR, GFP_KERNEL);
if (minor == -ENOSPC)
return -EBUSY;
if (minor < 0)
return -ENODEV;
error = -ENOMEM;
oud = kzalloc(sizeof(*oud), GFP_KERNEL);
@ -499,7 +491,7 @@ static int osd_probe(struct device *dev)
err_free_osd:
put_device(&oud->class_dev);
err_retract_minor:
ida_remove(&osd_minor_ida, minor);
ida_free(&osd_minor_ida, minor);
return error;
}
@ -514,7 +506,7 @@ static int osd_remove(struct device *dev)
}
cdev_device_del(&oud->cdev, &oud->class_dev);
ida_remove(&osd_minor_ida, oud->minor);
ida_free(&osd_minor_ida, oud->minor);
put_device(&oud->class_dev);
return 0;