linux-kernel - [PATCH v2 2/2] lib/test_bitmap: Fix address space when test user buffer

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Date:   Thu,  9 Jan 2020 12:36:01 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        Yury Norov <yury.norov@...il.com>,
        linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v2 2/2] lib/test_bitmap: Fix address space when test user buffer

Force address space to avoid the following warning:

lib/test_bitmap.c:461:53: warning: incorrect type in argument 1 (different address spaces)
lib/test_bitmap.c:461:53:    expected char const [noderef] <asn:1> *ubuf
lib/test_bitmap.c:461:53:    got char const *in

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
v2: no changes
 lib/test_bitmap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index 707b0389db35..61ed71c1daba 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -458,7 +458,8 @@ static void __init __test_bitmap_parse(int is_user)
 
 			set_fs(KERNEL_DS);
 			time = ktime_get();
-			err = bitmap_parse_user(test.in, len, bmap, test.nbits);
+			err = bitmap_parse_user((__force const char __user *)test.in, len,
+						bmap, test.nbits);
 			time = ktime_get() - time;
 			set_fs(orig_fs);
 		} else {
-- 
2.24.1