[PATCH] staging: gpib: Change return type of fluke_get_dma_residue

[Kees Bakker <kees@ijzerbout.nl>]

The function fluke_get_dma_residue returns an error as a negative value.
So the return type must not be unsigned.

Signed-off-by: Kees Bakker <kees@ijzerbout.nl>
---
 drivers/staging/gpib/eastwood/fluke_gpib.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/gpib/eastwood/fluke_gpib.c b/drivers/staging/gpib/eastwood/fluke_gpib.c
index f9f149db222d..77bbe2b587b1 100644
--- a/drivers/staging/gpib/eastwood/fluke_gpib.c
+++ b/drivers/staging/gpib/eastwood/fluke_gpib.c
@@ -536,7 +536,7 @@ static int fluke_accel_write(gpib_board_t *board, uint8_t *buffer, size_t length
 	return 0;
 }
 
-static unsigned int fluke_get_dma_residue(struct dma_chan *chan, dma_cookie_t cookie)
+static int fluke_get_dma_residue(struct dma_chan *chan, dma_cookie_t cookie)
 {
 	struct dma_tx_state state;
 	int result;
@@ -549,7 +549,7 @@ static unsigned int fluke_get_dma_residue(struct dma_chan *chan, dma_cookie_t co
 	dmaengine_tx_status(chan, cookie, &state);
 	// hardware doesn't support resume, so dont call this
 	// method unless the dma transfer is done.
-	return state.residue;
+	return (int)state.residue;
 }
 
 static int fluke_dma_read(gpib_board_t *board, uint8_t *buffer,
-- 
2.47.0