From: Lucas Wei <lucaswei@google.com>
Date: Fri, 18 Mar 2022 07:14:01 +0000 (+0800)
Subject: fs: sysfs_emit: Remove PAGE_SIZE alignment check
X-Git-Tag: v4.19.236~36
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10ddfb495232cc9d7bff79f737b4b1b4212fa260;p=thirdparty%2Fkernel%2Fstable.git

fs: sysfs_emit: Remove PAGE_SIZE alignment check

For kernel releases older than 4.20, using the SLUB alloctor will cause
this alignment check to fail as that allocator did NOT align kmalloc
allocations on a PAGE_SIZE boundry.

Remove the check for these older kernels as it is a false-positive and
causes problems on many devices.

Signed-off-by: Lucas Wei <lucaswei@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 5166eb40917da..011e391497f4e 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -572,8 +572,7 @@ int sysfs_emit(char *buf, const char *fmt, ...)
 	va_list args;
 	int len;
 
-	if (WARN(!buf || offset_in_page(buf),
-		 "invalid sysfs_emit: buf:%p\n", buf))
+	if (WARN(!buf, "invalid sysfs_emit: buf:%p\n", buf))
 		return 0;
 
 	va_start(args, fmt);