diff options
Diffstat (limited to 'kernel/dma/coherent.c')
| -rw-r--r-- | kernel/dma/coherent.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c index 25fc85a7aebe..2df824fa40ef 100644 --- a/kernel/dma/coherent.c +++ b/kernel/dma/coherent.c @@ -75,7 +75,7 @@ out_unmap_membase: return ERR_PTR(-ENOMEM); } -static void dma_release_coherent_memory(struct dma_coherent_mem *mem) +static void _dma_release_coherent_memory(struct dma_coherent_mem *mem) { if (!mem) return; @@ -127,10 +127,18 @@ int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, ret = dma_assign_coherent_memory(dev, mem); if (ret) - dma_release_coherent_memory(mem); + _dma_release_coherent_memory(mem); return ret; } +void dma_release_coherent_memory(struct device *dev) +{ + if (dev) { + _dma_release_coherent_memory(dev->dma_mem); + dev->dma_mem = NULL; + } +} + static void *__dma_alloc_from_coherent(struct device *dev, struct dma_coherent_mem *mem, ssize_t size, dma_addr_t *dma_handle) |