From: VAMSHI GAJJELA <vamshigajjela@xxxxxxxxxx> uart_fifo_timeout() returns unsigned value, hence the function uart_poll_timeout has been modified to use an unsigned int type for timeout values instead of a signed int. The return type of the function has been changed from int to unsigned int for consistency with the type of timeout values. The result of uart_fifo_timeout() is cast to u32, indicating that the value is truncated. Signed-off-by: VAMSHI GAJJELA <vamshigajjela@xxxxxxxxxx> --- include/linux/serial_core.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index b128513b009a..445a1ff7e502 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -773,9 +773,9 @@ static inline unsigned long uart_fifo_timeout(struct uart_port *port) } /* Base timer interval for polling */ -static inline int uart_poll_timeout(struct uart_port *port) +static inline unsigned int uart_poll_timeout(struct uart_port *port) { - int timeout = uart_fifo_timeout(port); + unsigned int timeout = (u32)uart_fifo_timeout(port); return timeout > 6 ? (timeout / 2 - 2) : 1; } -- 2.42.0.655.g421f12c284-goog