Messages in this thread Patch in this message | | | Date | Tue, 5 Dec 2017 17:42:27 +0800 | From | Dave Young <> | Subject | [PATCH] efi: add comment to avoid future expanding of sysfs systab |
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/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> --- drivers/firmware/efi/efi.c | 2 ++ 1 file changed, 2 insertions(+)
--- linux-x86.orig/drivers/firmware/efi/efi.c +++ linux-x86/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)
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