staging: gpib: use int type to store negative error codes

The "ret" variable is used to store the return from bb_write() returns
either zero on success or negative error codes on failure.  Storing the
error codes in size_t which is an unsigned long, doesn't cause an issue
at runtime but it's ugly as pants.  Change "ret" from size_t to int
type.  No effect on runtime.

Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/20250826123208.300145-1-rongqianfeng@vivo.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/gpib/gpio/gpib_bitbang.c b/drivers/staging/gpib/gpio/gpib_bitbang.c
index 22a55f3f794d4c7d5f923a50799054ced95c39bc..374cd61355e9ce4fddd81ab535685b6134356c38 100644 (file)
--- a/drivers/staging/gpib/gpio/gpib_bitbang.c
+++ b/drivers/staging/gpib/gpio/gpib_bitbang.c
@@ -726,7 +726,7 @@ static irqreturn_t bb_SRQ_interrupt(int irq, void *arg)
 static int bb_command(struct gpib_board *board, u8 *buffer,
                      size_t length, size_t *bytes_written)
 {
-       size_t ret;
+       int ret;
        struct bb_priv *priv = board->private_data;
        int i;