diff options
| author | Dave Young <dyoung@redhat.com> | 2017-12-06 10:50:10 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-12-06 19:32:23 +0100 |
| commit | 0b02e448a2ebb46eb9be4f1bdfc87112bd420cbf (patch) | |
| tree | 5ffd862e74126b2913fd5dd5e825077dc137b574 /drivers/firmware | |
| parent | efi/esrt: Use memunmap() instead of kfree() to free the remapping (diff) | |
| download | linux-0b02e448a2ebb46eb9be4f1bdfc87112bd420cbf.tar.xz linux-0b02e448a2ebb46eb9be4f1bdfc87112bd420cbf.zip | |
efi: Add comment to avoid future expanding of sysfs systab
/sys/firmware/efi/systab shows several different values, it breaks sysfs
one file one value design. But since there are already userspace tools
depend on it eg. kexec-tools so add code comment to alert future expanding
of this file.
Signed-off-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20171206095010.24170-4-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efi/efi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index c3eefa126e3b..557a47829d03 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -109,6 +109,8 @@ struct kobject *efi_kobj; /* * Let's not leave out systab information that snuck into * the efivars driver + * Note, do not add more fields in systab sysfs file as it breaks sysfs + * one value per file rule! */ static ssize_t systab_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) |