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Module autoprobing support for virtio drivers.

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This adds the logic to convert the virtio ids into module aliases, and
includes a modalias entry in sysfs and the env var to make probing work.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2007-10-22 11:03:39 +10:00
parent 31610434bc
commit b01d9f2863
2 changed files with 36 additions and 0 deletions
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18
scripts/mod/file2alias.c
View file

@ -525,6 +525,20 @@ static int do_ssb_entry(const char *filename,
return 1;
}
/* Looks like: virtio:dNvN */
static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
char *alias)
{
id->device = TO_NATIVE(id->device);
id->vendor = TO_NATIVE(id->vendor);
strcpy(alias, "virtio:");
ADD(alias, "d", 1, id->device);
ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
return 1;
}
/* Ignore any prefix, eg. v850 prepends _ */
static inline int sym_is(const char *symbol, const char *name)
{
@ -651,6 +665,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
do_table(symval, sym->st_size,
sizeof(struct ssb_device_id), "ssb",
do_ssb_entry, mod);
else if (sym_is(symname, "__mod_virtio_device_table"))
do_table(symval, sym->st_size,
sizeof(struct virtio_device_id), "virtio",
do_virtio_entry, mod);
free(zeros);
}