diff options
Diffstat (limited to 'drivers/dma/idxd/sysfs.c')
| -rw-r--r-- | drivers/dma/idxd/sysfs.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 6d907fe150aa..6ca6e520a2fa 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -124,6 +124,7 @@ static int idxd_config_bus_probe(struct device *dev) rc = idxd_device_config(idxd); if (rc < 0) { spin_unlock_irqrestore(&idxd->dev_lock, flags); + module_put(THIS_MODULE); dev_warn(dev, "Device config failed: %d\n", rc); return rc; } @@ -132,6 +133,7 @@ static int idxd_config_bus_probe(struct device *dev) rc = idxd_device_enable(idxd); if (rc < 0) { spin_unlock_irqrestore(&idxd->dev_lock, flags); + module_put(THIS_MODULE); dev_warn(dev, "Device enable failed: %d\n", rc); return rc; } @@ -142,6 +144,7 @@ static int idxd_config_bus_probe(struct device *dev) rc = idxd_register_dma_device(idxd); if (rc < 0) { spin_unlock_irqrestore(&idxd->dev_lock, flags); + module_put(THIS_MODULE); dev_dbg(dev, "Failed to register dmaengine device\n"); return rc; } @@ -516,7 +519,7 @@ static ssize_t group_tokens_reserved_store(struct device *dev, if (val > idxd->max_tokens) return -EINVAL; - if (val > idxd->nr_tokens) + if (val > idxd->nr_tokens + group->tokens_reserved) return -EINVAL; group->tokens_reserved = val; @@ -901,6 +904,20 @@ static ssize_t wq_size_show(struct device *dev, struct device_attribute *attr, return sprintf(buf, "%u\n", wq->size); } +static int total_claimed_wq_size(struct idxd_device *idxd) +{ + int i; + int wq_size = 0; + + for (i = 0; i < idxd->max_wqs; i++) { + struct idxd_wq *wq = &idxd->wqs[i]; + + wq_size += wq->size; + } + + return wq_size; +} + static ssize_t wq_size_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) @@ -920,7 +937,7 @@ static ssize_t wq_size_store(struct device *dev, if (wq->state != IDXD_WQ_DISABLED) return -EPERM; - if (size > idxd->max_wq_size) + if (size + total_claimed_wq_size(idxd) - wq->size > idxd->max_wq_size) return -EINVAL; wq->size = size; @@ -999,12 +1016,14 @@ static ssize_t wq_type_store(struct device *dev, return -EPERM; old_type = wq->type; - if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_KERNEL])) + if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_NONE])) + wq->type = IDXD_WQT_NONE; + else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_KERNEL])) wq->type = IDXD_WQT_KERNEL; else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_USER])) wq->type = IDXD_WQT_USER; else - wq->type = IDXD_WQT_NONE; + return -EINVAL; /* If we are changing queue type, clear the name */ if (wq->type != old_type) |