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dma: tegra: make byte counters unsigned int

PATCH New Ben Dooks 1 participant 1 message Nov 14, 2018

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Tegra architecture support dmaengine Tegra DMA drivers
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Ben Dooks

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PATCH 2/3 dma: tegra: make byte counters unsigned int

The buffer byte request length and counter are declared as signed integers but the values should never be below zero, so make these unsigned integers instead.

Reviewed-by Dmitry Osipenko <[email protected]>
Signed-off-by Ben Dooks <[email protected]>
---
 drivers/dma/tegra20-apb-dma.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
drivers/dma/tegra20-apb-dma.c +3 -3
index 8219ab88a507..adfd918baedc 100644
@@ -155,7 +155,7 @@ struct tegra_dma_channel_regs {
  */
 struct tegra_dma_sg_req {
 	struct tegra_dma_channel_regs	ch_regs;
-	int				req_len;
+	unsigned int			req_len;
 	bool				configured;
 	bool				last_sg;
 	struct list_head		node;

@@ -169,8 +169,8 @@ struct tegra_dma_sg_req {
  */
 struct tegra_dma_desc {
 	struct dma_async_tx_descriptor	txd;
-	int				bytes_requested;
-	int				bytes_transferred;
+	unsigned int			bytes_requested;
+	unsigned int			bytes_transferred;
 	enum dma_status			dma_status;
 	struct list_head		node;
 	struct list_head		tx_list;