Re: [PATCH] PnP Layer Rewrite V0.7 - 2.4.42

From: Thomas Hood (jdthood@yahoo.co.uk)
Date: Tue Oct 15 2002 - 10:36:24 EST


On Mon, 2002-10-14 at 15:54, Adam Belay wrote:
> Linux Plug and Play Rewrite V0.7

General:

   1. I would appreciate more carefully worded comments
   (or any comments, especially descriptions of interfaces
   to be used by other drivers)

   2. Please convert *all* initialisers to the new style.
   Not
          { tag: value, ... }
   but
          { .tag = value, ... }

In the configuration help:

> + devices. You should then also say Y to all of the protocols below.
> + Alternatively, you can say N here and configure your PnP devices
> + using user space utilities such as the isapnptools package.
> +
> + If unsure, say Y.

Can pnp support no longer be compiled as a module?

> + system resources. Say Y here if you want to reserve these resources.
> +
> + In most cases you should say Y. If this is causing a conflict then
> + say N.

What do you mean by "causing a conflict"?

> + Some features (e.g. event notification, Docking station information,

"Docking" -> "docking"

For the device list ...

On my Thinkpad 600X, lspnp prints out: "PNP0680 mass storage device: IDE"

> +ID("PNP0802", "Microsoft Sound System or Compatible Device (obsolete)")

Why isn't this one in order?

> +ID("PNPcXXX", "Unkowwn Modem")

Typo.

Somewhere you might want to include these:
ID("IBM3780", "IBM pointing device")
ID("IBM0071", "IBM infrared communications device")
ID("IBM3760", "IBM DSP")
ID("CSC0000", "Crystal Semiconductor CS423x sound -- SB/WSS/OPL3 emulation")
ID("CSC0010", "Crystal Semiconductor CS423x sound -- control")
ID("CSC0001", "Crystal Semiconductor CS423x sound -- joystick")
ID("CSC0003", "Crystal Semiconductor CS423x sound -- MPU401")

> diff -ur --new-file --exclude *.flags a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
> --- a/drivers/pnp/pnpbios/core.c Thu Jan 1 00:00:00 1970
> +++ b/drivers/pnp/pnpbios/core.c Tue Oct 8 17:18:29 2002
> [...]
> +static void __init build_devlist(void)
> +{
> + u8 nodenum;
> + char id[7];
> + unsigned char *pos;
> + unsigned int nodes_got = 0;
> + unsigned int devs = 0;
> + struct pnp_bios_node *node;
> + struct pnp_dev_node_info node_info;
> + struct pnp_dev *dev;
> + struct pnp_id *dev_id;
> +
> + if (!pnp_bios_present())
> + return;
> +
> + if (pnp_bios_dev_node_info(&node_info) != 0)
> + return;
> +
> + node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
> + if (!node)
> + return;
> +
> + for(nodenum=0; nodenum<0xff; ) {
> + u8 thisnodenum = nodenum;
> + /* We build the list from the "boot" config because
> + * asking for the "current" config causes some
> + * BIOSes to crash.
> + */
> + if (pnp_bios_get_dev_node(&nodenum, (char )0 , node))
> + break;
> + nodes_got++;
> + dev = pnpbios_kmalloc(sizeof (struct pnp_dev), GFP_KERNEL);
> + if (!dev)
> + break;
> + memset(dev,0,sizeof(struct pnp_dev));
> + dev_id = pnpbios_kmalloc(sizeof (struct pnp_id), GFP_KERNEL);
> + if (!dev_id)
> + break;
> + memset(dev_id,0,sizeof(struct pnp_id));
> + pnp_init_device(dev);
> + dev->number = thisnodenum;
> + memcpy(dev->name,"Unkown Device",13);
                                  ^^^^^^
Typo. And is the length OK?

> + pnpid32_to_pnpid(node->eisa_id,id);
> + memcpy(dev_id->id,id,8);
> + pnp_add_id(dev_id, dev);
> + pos = node_current_resource_data_to_dev(node,dev);

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