dma: Let dma_memory_set() propagate MemTxResult
address_space_write() returns a MemTxResult type.
Do not discard it, return it to the caller.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20201023151923.3243652-5-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h
index c6e12b4..37cd9f1 100644
--- a/include/sysemu/dma.h
+++ b/include/sysemu/dma.h
@@ -123,7 +123,20 @@
DMA_DIRECTION_FROM_DEVICE);
}
-int dma_memory_set(AddressSpace *as, dma_addr_t addr, uint8_t c, dma_addr_t len);
+/**
+ * dma_memory_set: Fill memory with a constant byte from DMA controller.
+ *
+ * Return a MemTxResult indicating whether the operation succeeded
+ * or failed (eg unassigned memory, device rejected the transaction,
+ * IOMMU fault).
+ *
+ * @as: #AddressSpace to be accessed
+ * @addr: address within that address space
+ * @c: constant byte to fill the memory
+ * @len: the number of bytes to fill with the constant byte
+ */
+MemTxResult dma_memory_set(AddressSpace *as, dma_addr_t addr,
+ uint8_t c, dma_addr_t len);
/**
* address_space_map: Map a physical memory region into a host virtual address.
