diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/block/dasd_devmap.c | 90 |
1 files changed, 29 insertions, 61 deletions
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 6da7083decba..221d8c8e63d5 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -725,25 +725,15 @@ static ssize_t dasd_ff_show(struct device *dev, struct device_attribute *attr, static ssize_t dasd_ff_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct dasd_devmap *devmap; unsigned int val; - - devmap = dasd_devmap_from_cdev(to_ccwdev(dev)); - if (IS_ERR(devmap)) - return PTR_ERR(devmap); + int rc; if (kstrtouint(buf, 0, &val) || val > 1) return -EINVAL; - spin_lock(&dasd_devmap_lock); - if (val) - devmap->features |= DASD_FEATURE_FAILFAST; - else - devmap->features &= ~DASD_FEATURE_FAILFAST; - if (devmap->device) - devmap->device->features = devmap->features; - spin_unlock(&dasd_devmap_lock); - return count; + rc = dasd_set_feature(to_ccwdev(dev), DASD_FEATURE_FAILFAST, val); + + return rc ? : count; } static DEVICE_ATTR(failfast, 0644, dasd_ff_show, dasd_ff_store); @@ -769,30 +759,28 @@ static ssize_t dasd_ro_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct dasd_devmap *devmap; + struct ccw_device *cdev = to_ccwdev(dev); struct dasd_device *device; unsigned int val; - - devmap = dasd_devmap_from_cdev(to_ccwdev(dev)); - if (IS_ERR(devmap)) - return PTR_ERR(devmap); + int rc; if (kstrtouint(buf, 0, &val) || val > 1) return -EINVAL; - spin_lock(&dasd_devmap_lock); - if (val) - devmap->features |= DASD_FEATURE_READONLY; - else - devmap->features &= ~DASD_FEATURE_READONLY; - device = devmap->device; - if (device) { - device->features = devmap->features; - val = val || test_bit(DASD_FLAG_DEVICE_RO, &device->flags); - } - spin_unlock(&dasd_devmap_lock); - if (device && device->block && device->block->gdp) + rc = dasd_set_feature(cdev, DASD_FEATURE_READONLY, val); + if (rc) + return rc; + + device = dasd_device_from_cdev(cdev); + if (IS_ERR(device)) + return PTR_ERR(device); + + val = val || test_bit(DASD_FLAG_DEVICE_RO, &device->flags); + if (device->block && device->block->gdp) set_disk_ro(device->block->gdp, val); + + dasd_put_device(device); + return count; } @@ -819,25 +807,15 @@ static ssize_t dasd_erplog_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct dasd_devmap *devmap; unsigned int val; - - devmap = dasd_devmap_from_cdev(to_ccwdev(dev)); - if (IS_ERR(devmap)) - return PTR_ERR(devmap); + int rc; if (kstrtouint(buf, 0, &val) || val > 1) return -EINVAL; - spin_lock(&dasd_devmap_lock); - if (val) - devmap->features |= DASD_FEATURE_ERPLOG; - else - devmap->features &= ~DASD_FEATURE_ERPLOG; - if (devmap->device) - devmap->device->features = devmap->features; - spin_unlock(&dasd_devmap_lock); - return count; + rc = dasd_set_feature(to_ccwdev(dev), DASD_FEATURE_ERPLOG, val); + + return rc ? : count; } static DEVICE_ATTR(erplog, 0644, dasd_erplog_show, dasd_erplog_store); @@ -1376,27 +1354,17 @@ static ssize_t dasd_reservation_policy_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct dasd_devmap *devmap; + struct ccw_device *cdev = to_ccwdev(dev); int rc; - devmap = dasd_devmap_from_cdev(to_ccwdev(dev)); - if (IS_ERR(devmap)) - return PTR_ERR(devmap); - rc = 0; - spin_lock(&dasd_devmap_lock); if (sysfs_streq("ignore", buf)) - devmap->features &= ~DASD_FEATURE_FAILONSLCK; + rc = dasd_set_feature(cdev, DASD_FEATURE_FAILONSLCK, 0); else if (sysfs_streq("fail", buf)) - devmap->features |= DASD_FEATURE_FAILONSLCK; + rc = dasd_set_feature(cdev, DASD_FEATURE_FAILONSLCK, 1); else rc = -EINVAL; - if (devmap->device) - devmap->device->features = devmap->features; - spin_unlock(&dasd_devmap_lock); - if (rc) - return rc; - else - return count; + + return rc ? : count; } static DEVICE_ATTR(reservation_policy, 0644, @@ -1522,7 +1490,7 @@ dasd_set_feature(struct ccw_device *cdev, int feature, int flag) { struct dasd_devmap *devmap; - devmap = dasd_find_busid(dev_name(&cdev->dev)); + devmap = dasd_devmap_from_cdev(cdev); if (IS_ERR(devmap)) return PTR_ERR(devmap); |