linux-kernel - [PATCH] fs/ntfs3: fix wrong cast in xattr.c

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Message-ID: <be1a2495-1c46-cda1-4f89-7e3a39d939db@gmail.com>
Date:   Tue, 15 Nov 2022 08:17:32 +0000
From:   Daniel Pinto <danielpinto52@...il.com>
To:     kernel test robot <lkp@...el.com>
Cc:     ntfs3@...ts.linux.dev, linux-fsdevel@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        oe-kbuild-all@...ts.linux.dev,
        Linux Memory Management List <linux-mm@...ck.org>,
        Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Subject: [PATCH] fs/ntfs3: fix wrong cast in xattr.c

cpu_to_be32 and be32_to_cpu respectively return and receive
__be32, change the cast to the correct types.

Fixes the following sparse warnings:
fs/ntfs3/xattr.c:811:48: sparse: sparse: incorrect type in
                         assignment (different base types)
fs/ntfs3/xattr.c:901:34: sparse: sparse: cast to restricted __be32

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Daniel Pinto <danielpinto52@...il.com>
---
 fs/ntfs3/xattr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
index 8620a7b4b3e6..6056ecbe8e4f 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -808,7 +808,7 @@ static int ntfs_getxattr(const struct xattr_handler *handler, struct dentry *de,
 			err = sizeof(u32);
 			*(u32 *)buffer = le32_to_cpu(ni->std_fa);
 			if (!strcmp(name, SYSTEM_NTFS_ATTRIB_BE))
-				*(u32 *)buffer = cpu_to_be32(*(u32 *)buffer);
+				*(__be32 *)buffer = cpu_to_be32(*(u32 *)buffer);
 		}
 		goto out;
 	}
@@ -898,7 +898,7 @@ static noinline int ntfs_setxattr(const struct xattr_handler *handler,
 		if (size != sizeof(u32))
 			goto out;
 		if (!strcmp(name, SYSTEM_NTFS_ATTRIB_BE))
-			new_fa = cpu_to_le32(be32_to_cpu(*(u32 *)value));
+			new_fa = cpu_to_le32(be32_to_cpu(*(__be32 *)value));
 		else
 			new_fa = cpu_to_le32(*(u32 *)value);