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efi: Update stale locking comment for struct efivars

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The comment describing how struct efivars->lock is used hasn't been
updated in sync with the code. Fix it.

Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mike Waychison <mikew@google.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This commit is contained in:
Matt Fleming 2014-07-08 12:28:33 +01:00
parent f383d00a0d
commit 82f990a822
1 changed files with 2 additions and 6 deletions
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8
include/linux/efi.h
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@ -1040,12 +1040,8 @@ struct efivar_operations {
struct efivars {
/*
* ->lock protects two things:
* 1) ->list - adds, removals, reads, writes
* 2) ops.[gs]et_variable() calls.
* It must not be held when creating sysfs entries or calling kmalloc.
* ops.get_next_variable() is only called from register_efivars()
* or efivar_update_sysfs_entries(),
* which is protected by the BKL, so that path is safe.
* 1) efivarfs_list and efivars_sysfs_list
* 2) ->ops calls
*/
spinlock_t lock;
struct kset *kset;