[PATCH 2/3] lib/notifier-error-inject: fix error when writing -errno to debugfs file

From: Akinobu Mita <akinobu.mita@gmail.com>
To: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, corbet@lwn.net, david@redhat.com,
	osalvador@suse.de, shuah@kernel.org,
	Zhao Gongyi <zhaogongyi@huawei.com>,
	Wei Yongjun <weiyongjun1@huawei.com>,
	Yicong Yang <yangyicong@hisilicon.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	akpm@linux-foundation.org
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Subject: [PATCH 2/3] lib/notifier-error-inject: fix error when writing -errno to debugfs file
Date: Tue, 20 Sep 2022 02:24:17 +0900	[thread overview]
Message-ID: <20220919172418.45257-3-akinobu.mita@gmail.com> (raw)
In-Reply-To: <20220919172418.45257-1-akinobu.mita@gmail.com>

The simple attribute files do not accept a negative value since the
commit 488dac0c9237 ("libfs: fix error cast of negative value in
simple_attr_write()").

This restores the previous behaviour by using newly introduced
DEFINE_SIMPLE_ATTRIBUTE_SIGNED instead of DEFINE_SIMPLE_ATTRIBUTE.

Fixes: 488dac0c9237 ("libfs: fix error cast of negative value in simple_attr_write()")
Reported-by: Zhao Gongyi <zhaogongyi@huawei.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
---
 lib/notifier-error-inject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/notifier-error-inject.c b/lib/notifier-error-inject.c
index 21016b32d313..2b24ea6c9497 100644
--- a/lib/notifier-error-inject.c
+++ b/lib/notifier-error-inject.c
@@ -15,7 +15,7 @@ static int debugfs_errno_get(void *data, u64 *val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(fops_errno, debugfs_errno_get, debugfs_errno_set,
+DEFINE_SIMPLE_ATTRIBUTE_SIGNED(fops_errno, debugfs_errno_get, debugfs_errno_set,
 			"%lld\n");
 
 static struct dentry *debugfs_create_errno(const char *name, umode_t mode,
-- 
2.34.1

