[2/6] dma: tegra: make byte counters unsigned int
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Message ID 20181012094454.22841-3-ben.dooks@codethink.co.uk
State Superseded
Headers show
Series
  • [1/6] dma: tegra: avoid overflow of byte tracking
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Commit Message

Ben Dooks Oct. 12, 2018, 9:44 a.m. UTC
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.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
 drivers/dma/tegra20-apb-dma.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Patch
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diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index 8219ab88a507..adfd918baedc 100644
--- 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;