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-rw-r--r--include/linux/dmaengine.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index fe40bc020af6..6f2d070ac7f3 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -400,6 +400,12 @@ __dma_cap_set(enum dma_transaction_type tx_type, dma_cap_mask_t *dstp)
set_bit(tx_type, dstp->bits);
}
+#define dma_cap_zero(mask) __dma_cap_zero(&(mask))
+static inline void __dma_cap_zero(dma_cap_mask_t *dstp)
+{
+ bitmap_zero(dstp->bits, DMA_TX_TYPE_END);
+}
+
#define dma_has_cap(tx, mask) __dma_has_cap((tx), &(mask))
static inline int
__dma_has_cap(enum dma_transaction_type tx_type, dma_cap_mask_t *srcp)