Tom Gundersen <teg@xxxxxxx> writes:
> Commit 78551277e4df5: "Input: i8042 - add PNP modaliases" had a bug, where the
> second call to MODULE_DEVICE_TABLE() overrode the first resulting in not all
> the modaliases being exposed.
No Signed-off-by?
Thanks,
Rusty.
>
> This fixes the problem by including the name of the device_id table in the
> __mod_*_device_table alias, allowing us to export several device_id tables
> per module.
>
> Suggested-by: Kay Sievers <kay@xxxxxxxx>
> Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
> ---
> include/linux/module.h | 2 +-
> scripts/mod/file2alias.c | 14 +++++++++-----
> 2 files changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/include/linux/module.h b/include/linux/module.h
> index 15cd6b1..7732d76 100644
> --- a/include/linux/module.h
> +++ b/include/linux/module.h
> @@ -143,7 +143,7 @@ extern const struct gtype##_id __mod_##gtype##_table \
> #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
>
> #define MODULE_DEVICE_TABLE(type,name) \
> - MODULE_GENERIC_TABLE(type##_device,name)
> + MODULE_GENERIC_TABLE(type##__##name##_device,name)
>
> /* Version of form [<epoch>:]<version>[-<extra-version>].
> Or for CVS/RCS ID version, everything but the number is stripped.
> diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
> index 2370863..6778381 100644
> --- a/scripts/mod/file2alias.c
> +++ b/scripts/mod/file2alias.c
> @@ -42,7 +42,7 @@ typedef unsigned char __u8;
>
> /* This array collects all instances that use the generic do_table */
> struct devtable {
> - const char *device_id; /* name of table, __mod_<name>_device_table. */
> + const char *device_id; /* name of table, __mod_<name>__*_device_table. */
> unsigned long id_size;
> void *function;
> };
> @@ -146,7 +146,8 @@ static void device_id_check(const char *modname, const char *device_id,
>
> if (size % id_size || size < id_size) {
> fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
> - "of the size of section __mod_%s_device_table=%lu.\n"
> + "of the size of "
> + "section __mod_%s__<identifier>_device_table=%lu.\n"
> "Fix definition of struct %s_device_id "
> "in mod_devicetable.h\n",
> modname, device_id, id_size, device_id, size, device_id);
> @@ -1206,7 +1207,7 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
> {
> void *symval;
> char *zeros = NULL;
> - const char *name;
> + const char *name, *identifier;
> unsigned int namelen;
>
> /* We're looking for a section relative symbol */
> @@ -1217,7 +1218,7 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
> if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
> return;
>
> - /* All our symbols are of form <prefix>__mod_XXX_device_table. */
> + /* All our symbols are of form <prefix>__mod_<name>__<identifier>_device_table. */
> name = strstr(symname, "__mod_");
> if (!name)
> return;
> @@ -1227,7 +1228,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
> return;
> if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
> return;
> - namelen -= strlen("_device_table");
> + identifier = strstr(name, "__");
> + if (!identifier)
> + return;
> + namelen = identifier - name;
>
> /* Handle all-NULL symbols allocated into .bss */
> if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
> --
> 1.8.5.3
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