parisc: ->mapping_error

[karo-tx-linux.git] / drivers / parisc / ccio-dma.c

diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 56c93f096de95c3b8f465bfc8bf7b7d8811cab64..6aa1e7f6672ffe9f41ba275476273d2ec42b1bff 100644 (file)
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -110,6 +110,8 @@
 #define CMD_TLB_DIRECT_WRITE 35         /* IO_COMMAND for I/O TLB Writes     */
 #define CMD_TLB_PURGE        33         /* IO_COMMAND to Purge I/O TLB entry */
 
+#define CCIO_MAPPING_ERROR    (~(dma_addr_t)0)
+
 struct ioa_registers {
         /* Runway Supervisory Set */
         int32_t    unused1[12];
@@ -742,7 +744,7 @@ ccio_map_single(struct device *dev, void *addr, size_t size,
        BUG_ON(!dev);
        ioc = GET_IOC(dev);
        if (!ioc)
-               return DMA_ERROR_CODE;
+               return CCIO_MAPPING_ERROR;
 
        BUG_ON(size <= 0);
 
@@ -1023,6 +1025,11 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
        DBG_RUN_SG("%s() DONE (nents %d)\n", __func__, nents);
 }
 
+static int ccio_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+       return dma_addr == CCIO_MAPPING_ERROR;
+}
+
 static const struct dma_map_ops ccio_ops = {
        .dma_supported =        ccio_dma_supported,
        .alloc =                ccio_alloc,
@@ -1031,6 +1038,7 @@ static const struct dma_map_ops ccio_ops = {
        .unmap_page =           ccio_unmap_page,
        .map_sg =               ccio_map_sg,
        .unmap_sg =             ccio_unmap_sg,
+       .mapping_error =        ccio_mapping_error,
 };
 
 #ifdef CONFIG_PROC_FS