dmaengine: tegra: make byte counters unsigned int

bjdooks-ct · vinodkoul · commit 216a1d7da066 · 2019-01-07T09:52:41.000+05:30
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 &lt;digetx@gmail.com&gt;
Signed-off-by: Ben Dooks &lt;ben.dooks@codethink.co.uk&gt;
Signed-off-by: Vinod Koul &lt;vkoul@kernel.org&gt;
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
@@ -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;
