On Thu, Oct 26, 2023 at 07:26:28PM +0530, Vamshi Gajjela wrote:
> From: VAMSHI GAJJELA <vamshigajjela@xxxxxxxxxx>
Please use lower case letters like I think you mean to?
Also, where are patches 1/3 and 2/3 of this series? I can't do anything
without them as well.
> The function uart_fifo_timeout() returns an unsigned long value, which
> is the number of jiffies. Therefore, change the variable timeout in the
> function uart_poll_timeout() from int to unsigned long.
> Change the return type of the function uart_poll_timeout() from int to
> unsigned long to be consistent with the type of timeout values.
>
> Signed-off-by: VAMSHI GAJJELA <vamshigajjela@xxxxxxxxxx>
> ---
> v3:
> - updated description
> v2:
> - unsigned long instead of unsigned int
> - added () after function name in short log
> - updated description
>
> 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 bb6f073bc159..6916a1d7e477 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 long uart_poll_timeout(struct uart_port *port)
> {
> - int timeout = uart_fifo_timeout(port);
> + unsigned long timeout = uart_fifo_timeout(port);
>
> return timeout > 6 ? (timeout / 2 - 2) : 1;
So we are now doing 64bit math? Did that just make things slower?
What bug is this actually fixing? How have you tested this to verify it
works?
thanks,
greg k-h
