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Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull EFI fix from Thomas Gleixner:
 "A single fix for a EFI mixed mode regression caused by recent rework
  which did not take the firmware bitwidth into account"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi-stub: Fix get_efi_config_table on mixed-mode setups
This commit is contained in:
Linus Torvalds 2019-08-18 09:36:51 -07:00
commit 645c03aaca
1 changed files with 27 additions and 11 deletions
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38
drivers/firmware/efi/libstub/efi-stub-helper.c
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@ -927,17 +927,33 @@ efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table_arg,
return status;
}
#define GET_EFI_CONFIG_TABLE(bits) \
static void *get_efi_config_table##bits(efi_system_table_t *_sys_table, \
efi_guid_t guid) \
{ \
efi_system_table_##bits##_t *sys_table; \
efi_config_table_##bits##_t *tables; \
int i; \
\
sys_table = (typeof(sys_table))_sys_table; \
tables = (typeof(tables))(unsigned long)sys_table->tables; \
\
for (i = 0; i < sys_table->nr_tables; i++) { \
if (efi_guidcmp(tables[i].guid, guid) != 0) \
continue; \
\
return (void *)(unsigned long)tables[i].table; \
} \
\
return NULL; \
}
GET_EFI_CONFIG_TABLE(32)
GET_EFI_CONFIG_TABLE(64)
void *get_efi_config_table(efi_system_table_t *sys_table, efi_guid_t guid)
{
efi_config_table_t *tables = (efi_config_table_t *)sys_table->tables;
int i;
for (i = 0; i < sys_table->nr_tables; i++) {
if (efi_guidcmp(tables[i].guid, guid) != 0)
continue;
return (void *)tables[i].table;
}
return NULL;
if (efi_is_64bit())
return get_efi_config_table64(sys_table, guid);
else
return get_efi_config_table32(sys_table, guid);
}