linux-kernel - [PATCH] MIPS: fix vdso different address spaces

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Date:   Tue, 14 Jul 2020 14:07:47 +0800
From:   Guoyun Sun <sunguoyun@...ngson.cn>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Sunguoyun <sunguoyun@...ngson.cn>
Subject: [PATCH] MIPS: fix vdso different address spaces

From: Sunguoyun <sunguoyun@...ngson.cn>

sparse report build warning as follows:
arch/mips/vdso/vdso-n32-image.c:13:35:
incorrect type in assignment (different address spaces) @@
expected void *[usertype] vdso @@     got void [noderef] <asn:1> * @@

Reported-by: kernel test robot <lkp@...el.com>

Signed-off-by: Sunguoyun <sunguoyun@...ngson.cn>
---
 arch/mips/vdso/genvdso.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/vdso/genvdso.c b/arch/mips/vdso/genvdso.c
index be57b832bbe0..94f9538bc889 100644
--- a/arch/mips/vdso/genvdso.c
+++ b/arch/mips/vdso/genvdso.c
@@ -260,7 +260,7 @@ int main(int argc, char **argv)
 	fprintf(out_file, "	if (vdso_image.size != new_size)\n");
 	fprintf(out_file, "		return -EINVAL;\n");
 	fprintf(out_file, "	current->mm->context.vdso =\n");
-	fprintf(out_file, "	(void __user *)(new_vma->vm_start);\n");
+	fprintf(out_file, "	(void *)(new_vma->vm_start);\n");
 	fprintf(out_file, "	return 0;\n");
 	fprintf(out_file, "}\n");
 
-- 
2.17.1