selftests: net: let big_tcp test cope with slow env

[platform/kernel/linux-rpi.git] / kernel / dma / coherent.c

diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c
index c21abc7..ff5683a 100644 (file)
--- a/kernel/dma/coherent.c
+++ b/kernel/dma/coherent.c
@@ -132,8 +132,10 @@ int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
 
 void dma_release_coherent_memory(struct device *dev)
 {
-       if (dev)
+       if (dev) {
                _dma_release_coherent_memory(dev->dma_mem);
+               dev->dma_mem = NULL;
+       }
 }
 
 static void *__dma_alloc_from_coherent(struct device *dev,