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Re: [PATCH net-next 02/11] net: dsa: add debugfs interface

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On 08/14/2017 03:22 PM, Vivien Didelot wrote:
> This commit adds a DEBUG_FS dependent DSA core file creating a generic
> debug filesystem interface for the DSA switch devices.
> 
> The interface can be mounted with:
> 
>     # mount -t debugfs none /sys/kernel/debug
> 
> The dsa directory contains one directory per switch chip:
> 
>     # cd /sys/kernel/debug/dsa/
>     # ls
>     switch0  switch1 switch2
> 
> Each chip directory contains one directory per port:
> 
>     # ls -l switch0/
>     drwxr-xr-x 2 root root 0 Jan  1 00:00 port0
>     drwxr-xr-x 2 root root 0 Jan  1 00:00 port1
>     drwxr-xr-x 2 root root 0 Jan  1 00:00 port2
>     drwxr-xr-x 2 root root 0 Jan  1 00:00 port5
>     drwxr-xr-x 2 root root 0 Jan  1 00:00 port6
> 
> Future patches will add entry files to these directories.
> 
> Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
> ---

> +static int dsa_debugfs_create_switch(struct dsa_switch *ds)
> +{
> +	char name[32];
> +	int i;
> +
> +	/* skip if there is no debugfs support */
> +	if (!dsa_debugfs_dir)
> +		return 0;
> +
> +	snprintf(name, sizeof(name), DSA_SWITCH_FMT, ds->index);
> +
> +	ds->debugfs_dir = debugfs_create_dir(name, dsa_debugfs_dir);
> +	if (IS_ERR_OR_NULL(ds->debugfs_dir))
> +		return -EFAULT;
> +
> +	for (i = 0; i < ds->num_ports; i++) {
> +		if (!ds->ports[i].dn)
> +			continue;

This won't create port directories when using platform data, can you
check for BIT(i) & ds->enabled_port_mask instead?
-- 
Florian

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[PATCH net-next 00/11] net: dsa: add generic debugfs interface Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:30 +0200
  [PATCH net-next 09/11] net: dsa: debugfs: add port mdb Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:30 +0200
    Re: [PATCH net-next 09/11] net: dsa: debugfs: add port mdb Andrew Lunn <andrew@lunn.ch> - 2017-08-15 01:00 +0200
    Re: [PATCH net-next 09/11] net: dsa: debugfs: add port mdb Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 01/11] net: dsa: legacy: assign dst->applied Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:30 +0200
    Re: [PATCH net-next 01/11] net: dsa: legacy: assign dst->applied Andrew Lunn <andrew@lunn.ch> - 2017-08-15 01:00 +0200
  [PATCH net-next 08/11] net: dsa: restore mdb dump Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:30 +0200
    Re: [PATCH net-next 08/11] net: dsa: restore mdb dump Andrew Lunn <andrew@lunn.ch> - 2017-08-15 00:50 +0200
    Re: [PATCH net-next 08/11] net: dsa: restore mdb dump Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 07/11] net: dsa: debugfs: add port fdb Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:40 +0200
    Re: [PATCH net-next 07/11] net: dsa: debugfs: add port fdb Andrew Lunn <andrew@lunn.ch> - 2017-08-15 00:50 +0200
    Re: [PATCH net-next 07/11] net: dsa: debugfs: add port fdb Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 06/11] net: dsa: debugfs: add port registers Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:40 +0200
    Re: [PATCH net-next 06/11] net: dsa: debugfs: add port registers Andrew Lunn <andrew@lunn.ch> - 2017-08-15 00:50 +0200
    RE: [PATCH net-next 06/11] net: dsa: debugfs: add port registers <Woojung.Huh@microchip.com> - 2017-08-15 18:30 +0200
    Re: [PATCH net-next 06/11] net: dsa: debugfs: add port registers Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 05/11] net: dsa: debugfs: add port stats Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:40 +0200
    Re: [PATCH net-next 05/11] net: dsa: debugfs: add port stats Andrew Lunn <andrew@lunn.ch> - 2017-08-15 00:50 +0200
    Re: [PATCH net-next 05/11] net: dsa: debugfs: add port stats Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 02/11] net: dsa: add debugfs interface Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:40 +0200
    Re: [PATCH net-next 02/11] net: dsa: add debugfs interface Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:30 +0200
  Re: [PATCH net-next 00/11] net: dsa: add generic debugfs interface Florian Fainelli <f.fainelli@gmail.com> - 2017-08-19 00:00 +0200

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