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-rw-r--r--include/linux/vdpa.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 267236aab34c..5cc5e501397f 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -63,6 +63,7 @@ struct vdpa_mgmt_dev;
* @dev: underlying device
* @dma_dev: the actual device that is performing DMA
* @config: the configuration ops for this device.
+ * @cf_mutex: Protects get and set access to configuration layout.
* @index: device index
* @features_valid: were features initialized? for legacy guests
* @use_va: indicate whether virtual address must be used by this device
@@ -74,6 +75,7 @@ struct vdpa_device {
struct device dev;
struct device *dma_dev;
const struct vdpa_config_ops *config;
+ struct mutex cf_mutex; /* Protects get/set config */
unsigned int index;
bool features_valid;
bool use_va;