diff options
Diffstat (limited to 'kernels/linux-libre-rt/0002-module-allow-multiple-calls-to-MODULE_DEVICE_TABLE-p.patch')
| -rw-r--r-- | kernels/linux-libre-rt/0002-module-allow-multiple-calls-to-MODULE_DEVICE_TABLE-p.patch | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/kernels/linux-libre-rt/0002-module-allow-multiple-calls-to-MODULE_DEVICE_TABLE-p.patch b/kernels/linux-libre-rt/0002-module-allow-multiple-calls-to-MODULE_DEVICE_TABLE-p.patch new file mode 100644 index 000000000..7db851cb9 --- /dev/null +++ b/kernels/linux-libre-rt/0002-module-allow-multiple-calls-to-MODULE_DEVICE_TABLE-p.patch @@ -0,0 +1,93 @@ +From 9bc5b710f5957763d6944f38143b627d127c15ff Mon Sep 17 00:00:00 2001 +From: Tom Gundersen <teg@jklm.no> +Date: Mon, 3 Feb 2014 11:14:13 +1030 +Subject: [PATCH 02/10] module: allow multiple calls to MODULE_DEVICE_TABLE() + per module + +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. + +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@vrfy.org> +Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> +Signed-off-by: Tom Gundersen <teg@jklm.no> +Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> +--- + 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 eaf60ff..ad18f60 100644 +--- a/include/linux/module.h ++++ b/include/linux/module.h +@@ -142,7 +142,7 @@ 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 25e5cb0..ce16404 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) { +-- +1.9.2 + |