Re: [net-next v8 1/6] net: marvell: prestera: Add driver for Prestera family ASIC devices

[Jakub Kicinski]

On Thu, 10 Sep 2020 18:00:50 +0300 Vadym Kochan wrote:
> +static int prestera_sdma_tx_wait(struct prestera_sdma *sdma,
> +				 struct prestera_tx_ring *tx_ring)
> +{
> +	int tx_wait_num = PRESTERA_SDMA_WAIT_MUL * tx_ring->max_burst;
> +	bool is_ready;
> +
> +	return read_poll_timeout_atomic(prestera_sdma_is_ready, is_ready, true,
> +					1, tx_wait_num, false, sdma);
> +}

This is strange and generates a warning:

drivers/net/ethernet/marvell/prestera/prestera_rxtx.c: In function ‘prestera_sdma_tx_wait’:
drivers/net/ethernet/marvell/prestera/prestera_rxtx.c:695:7: warning: variable ‘is_ready’ set but not used [-Wunused-but-set-variable]
  695 |  bool is_ready;
      |       ^~~~~~~~