[Xen-devel] [PATCH 01/44] firmware/ivc: use dma_mapping_error

[Christoph Hellwig <hch@xxxxxx>]

DMA_ERROR_CODE is not supposed to be used by drivers.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 drivers/firmware/tegra/ivc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/tegra/ivc.c b/drivers/firmware/tegra/ivc.c
index 29ecfd815320..a01461d63f68 100644
--- a/drivers/firmware/tegra/ivc.c
+++ b/drivers/firmware/tegra/ivc.c
@@ -646,12 +646,12 @@ int tegra_ivc_init(struct tegra_ivc *ivc, struct device 
*peer, void *rx,
        if (peer) {
                ivc->rx.phys = dma_map_single(peer, rx, queue_size,
                                              DMA_BIDIRECTIONAL);
-               if (ivc->rx.phys == DMA_ERROR_CODE)
+               if (dma_mapping_error(peer, ivc->rx.phys))
                        return -ENOMEM;
 
                ivc->tx.phys = dma_map_single(peer, tx, queue_size,
                                              DMA_BIDIRECTIONAL);
-               if (ivc->tx.phys == DMA_ERROR_CODE) {
+               if (dma_mapping_error(peer, ivc->tx.phys)) {
                        dma_unmap_single(peer, ivc->rx.phys, queue_size,
                                         DMA_BIDIRECTIONAL);
                        return -ENOMEM;
-- 
2.11.0


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