Re: [PATCH v3 net-next 3/5] net: dsa: lan9303: Simplify lan9303_xxx_packet_processing() usage

Florian Fainelli
2017-08-03T18:06:43Z

On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
> Simplify usage of lan9303_enable_packet_processing,
> lan9303_disable_packet_processing()
>
> Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>

took a little while to figure out that we are utilizing fall through of
the switch/case statement and that's why it's okay.

> ---
> drivers/net/dsa/lan9303-core.c | 24 ++++++++++--------------
> 1 file changed, 10 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
> index 126e8b84bdf0..31fe66fbe39a 100644
> --- a/drivers/net/dsa/lan9303-core.c
> +++ b/drivers/net/dsa/lan9303-core.c
> @@ -564,15 +564,16 @@ static int lan9303_handle_reset(struct lan9303 *chip)
> /* stop processing packets for all ports */
> static int lan9303_disable_processing(struct lan9303 *chip)
> {
> - int ret;
> + int p;
>
> - ret = lan9303_disable_packet_processing(chip, 0);
> - if (ret)
> - return ret;
> - ret = lan9303_disable_packet_processing(chip, 1);
> - if (ret)
> - return ret;
> - return lan9303_disable_packet_processing(chip, 2);
> + for (p = 0; p < LAN9303_NUM_PORTS; p++) {
> + int ret = lan9303_disable_packet_processing(chip, p);
> +
> + if (ret)
> + return ret;
> + }
> +
> + return 0;
> }
>
> static int lan9303_check_device(struct lan9303 *chip)
> @@ -765,7 +766,6 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
> /* enable internal packet processing */
> switch (port) {
> case 1:
> - return lan9303_enable_packet_processing(chip, port);
> case 2:
> return lan9303_enable_packet_processing(chip, port);
> default:
> @@ -784,13 +784,9 @@ static void lan9303_port_disable(struct dsa_switch *ds, int port,
> /* disable internal packet processing */
> switch (port) {
> case 1:
> - lan9303_disable_packet_processing(chip, port);
> - lan9303_phy_write(ds, chip->phy_addr_sel_strap + 1,
> - MII_BMCR, BMCR_PDOWN);
> - break;
> case 2:
> lan9303_disable_packet_processing(chip, port);
> - lan9303_phy_write(ds, chip->phy_addr_sel_strap + 2,
> + lan9303_phy_write(ds, chip->phy_addr_sel_strap + port,
> MII_BMCR, BMCR_PDOWN);
> break;
> default:
>

--
Florian