netdev - Re: [PATCH 10/11] net: dsa: microchip: ksz8795: dynamic allocate memory for flush_dyn_mac

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Date:   Thu, 19 Nov 2020 02:21:06 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Michael Grzeschik <m.grzeschik@...gutronix.de>
Cc:     netdev@...r.kernel.org, f.fainelli@...il.com, davem@...emloft.net,
        kernel@...gutronix.de, matthias.schiffer@...tq-group.com,
        woojung.huh@...rochip.com, UNGLinuxDriver@...rochip.com
Subject: Re: [PATCH 10/11] net: dsa: microchip: ksz8795: dynamic allocate
 memory for flush_dyn_mac_table

On Wed, Nov 18, 2020 at 11:03:56PM +0100, Michael Grzeschik wrote:
> To get the driver working with other chips using different port counts
> the dyn_mac_table should be flushed depending on the amount of physical
> ports.
> 
> Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
> 
> ---
> v1: - based on "[PATCH v4 05/11] net: dsa: microchip: ksz8795: dynamica allocate memory for flush_dyn_mac_table"
>     - lore: https://lore.kernel.org/netdev/20200803054442.20089-6-m.grzeschik@pengutronix.de/
> ---
>  drivers/net/dsa/microchip/ksz8795.c     | 8 ++++++--
>  drivers/net/dsa/microchip/ksz8795_reg.h | 2 --
>  2 files changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
> index 9ea5ec61513023f..418f71e5b90761c 100644
> --- a/drivers/net/dsa/microchip/ksz8795.c
> +++ b/drivers/net/dsa/microchip/ksz8795.c
> @@ -750,11 +750,14 @@ static void ksz8795_port_stp_state_set(struct dsa_switch *ds, int port,
>  
>  static void ksz8795_flush_dyn_mac_table(struct ksz_device *dev, int port)
>  {
> -	u8 learn[TOTAL_PORT_NUM];
>  	int first, index, cnt;
>  	struct ksz_port *p;
> +	u8 *learn = kzalloc(dev->port_cnt, GFP_KERNEL);

Using DSA_MAX_PORTS makes things simpler.

      Andrew