diff mbox series

[2/4] dma-mapping: Add wrapper function to set dma_coherent

Message ID 1647533563-2170-3-git-send-email-mikelley@microsoft.com (mailing list archive)
State Superseded
Headers show
Series Fix coherence for VMbus and PCI pass-thru devices in Hyper-V VM | expand

Commit Message

Michael Kelley (LINUX) March 17, 2022, 4:12 p.m. UTC 
Add a wrapper function to set dma_coherent, avoiding the need for
complex #ifdef's when setting it in architecture independent code.

Signed-off-by: Michael Kelley <mikelley@microsoft.com>
---
 include/linux/dma-map-ops.h | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h
index 0d5b06b..3350e7a 100644
--- a/include/linux/dma-map-ops.h
+++ b/include/linux/dma-map-ops.h
@@ -254,11 +254,20 @@  static inline bool dev_is_dma_coherent(struct device *dev)
 {
 	return dev->dma_coherent;
 }
+static inline void dev_set_dma_coherent(struct device *dev,
+		bool coherent)
+{
+	dev->dma_coherent = coherent;
+}
 #else
 static inline bool dev_is_dma_coherent(struct device *dev)
 {
 	return true;
 }
+static inline void dev_set_dma_coherent(struct device *dev,
+		bool coherent)
+{
+}
 #endif /* CONFIG_ARCH_HAS_DMA_COHERENCE_H */
 
 void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,