-----原始邮件----- 发件人: "Greg KH" gregkh@linuxfoundation.org 发送时间:2025-09-21 20:26:27 (星期日) 收件人: cuitao@kylinos.cn, chenhuacai@loongson.cn 抄送: stable@vger.kernel.org 主题: Re: WTF: patch "[PATCH] LoongArch: Replace sprintf() with sysfs_emit()" was seriously submitted to be applied to the 6.16-stable tree?
On Sun, Sep 21, 2025 at 02:24:01PM +0200, gregkh@linuxfoundation.org wrote:
The patch below was submitted to be applied to the 6.16-stable tree.
I fail to see how this patch meets the stable kernel rules as found at Documentation/process/stable-kernel-rules.rst.
I could be totally wrong, and if so, please respond to stable@vger.kernel.org and let me know why this patch should be applied. Otherwise, it is now dropped from my patch queues, never to be seen again.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From d6d69f0edde63b553345d4efaceb7daed89fe04c Mon Sep 17 00:00:00 2001
From: Tao Cui cuitao@kylinos.cn Date: Thu, 18 Sep 2025 19:44:04 +0800 Subject: [PATCH] LoongArch: Replace sprintf() with sysfs_emit()
As Documentation/filesystems/sysfs.rst suggested, show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space.
No functional change intended.
Cc: stable@vger.kernel.org Signed-off-by: Tao Cui cuitao@kylinos.cn Signed-off-by: Huacai Chen chenhuacai@loongson.cn
diff --git a/arch/loongarch/kernel/env.c b/arch/loongarch/kernel/env.c index be309a71f204..23bd5ae2212c 100644 --- a/arch/loongarch/kernel/env.c +++ b/arch/loongarch/kernel/env.c @@ -86,7 +86,7 @@ late_initcall(fdt_cpu_clk_init); static ssize_t boardinfo_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) {
- return sprintf(buf,
- return sysfs_emit(buf, "BIOS Information\n" "Vendor\t\t\t: %s\n" "Version\t\t\t: %s\n"
Also, this should NOT be a sysfs file. sysfs files are "one value per file", this should be multiple different sysfs file. Please fix that up.
Hi, Cuitao,
Please double check whether your code is correct, thanks.
Huacai
thanks,
greg k-h
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