diff options
Diffstat (limited to 'drivers/hv/vmbus_drv.c')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 283d184280af..d0ff65675292 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -316,6 +316,8 @@ static ssize_t out_intr_mask_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound); return sprintf(buf, "%d\n", outbound.current_interrupt_mask); } @@ -329,6 +331,8 @@ static ssize_t out_read_index_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound); return sprintf(buf, "%d\n", outbound.current_read_index); } @@ -343,6 +347,8 @@ static ssize_t out_write_index_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound); return sprintf(buf, "%d\n", outbound.current_write_index); } @@ -357,6 +363,8 @@ static ssize_t out_read_bytes_avail_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound); return sprintf(buf, "%d\n", outbound.bytes_avail_toread); } @@ -371,6 +379,8 @@ static ssize_t out_write_bytes_avail_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound); return sprintf(buf, "%d\n", outbound.bytes_avail_towrite); } @@ -384,6 +394,8 @@ static ssize_t in_intr_mask_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound); return sprintf(buf, "%d\n", inbound.current_interrupt_mask); } @@ -397,6 +409,8 @@ static ssize_t in_read_index_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound); return sprintf(buf, "%d\n", inbound.current_read_index); } @@ -410,6 +424,8 @@ static ssize_t in_write_index_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound); return sprintf(buf, "%d\n", inbound.current_write_index); } @@ -424,6 +440,8 @@ static ssize_t in_read_bytes_avail_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound); return sprintf(buf, "%d\n", inbound.bytes_avail_toread); } @@ -438,6 +456,8 @@ static ssize_t in_write_bytes_avail_show(struct device *dev, if (!hv_dev->channel) return -ENODEV; + if (hv_dev->channel->state != CHANNEL_OPENED_STATE) + return -EINVAL; hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound); return sprintf(buf, "%d\n", inbound.bytes_avail_towrite); } |