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authorMichael S. Tsirkin <mst@redhat.com>2014-12-12 01:56:04 +0200
committerMichael S. Tsirkin <mst@redhat.com>2015-01-13 15:23:28 +0200
commit09a2f7cf6a89ec011bda8c0f0f8d0790a1176973 (patch)
tree8d0570c9e7bdf2317b10b0280c50c93631698fae
parent1d638efce8cc77c1ec838886e9a64f98aa58b780 (diff)
m68k/uaccess: fix sparse errors
virtio wants to read bitwise types from userspace using get_user. At the moment this triggers sparse errors, since the value is passed through an integer. Fix that up using __force. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
-rw-r--r--arch/m68k/include/asm/uaccess_mm.h40
1 files changed, 20 insertions, 20 deletions
diff --git a/arch/m68k/include/asm/uaccess_mm.h b/arch/m68k/include/asm/uaccess_mm.h
index 15901db435b9..d228601b3afc 100644
--- a/arch/m68k/include/asm/uaccess_mm.h
+++ b/arch/m68k/include/asm/uaccess_mm.h
@@ -128,25 +128,25 @@ asm volatile ("\n" \
#define put_user(x, ptr) __put_user(x, ptr)
-#define __get_user_asm(res, x, ptr, type, bwl, reg, err) ({ \
- type __gu_val; \
- asm volatile ("\n" \
- "1: "MOVES"."#bwl" %2,%1\n" \
- "2:\n" \
- " .section .fixup,\"ax\"\n" \
- " .even\n" \
- "10: move.l %3,%0\n" \
- " sub.l %1,%1\n" \
- " jra 2b\n" \
- " .previous\n" \
- "\n" \
- " .section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 1b,10b\n" \
- " .previous" \
- : "+d" (res), "=&" #reg (__gu_val) \
- : "m" (*(ptr)), "i" (err)); \
- (x) = (typeof(*(ptr)))(unsigned long)__gu_val; \
+#define __get_user_asm(res, x, ptr, type, bwl, reg, err) ({ \
+ type __gu_val; \
+ asm volatile ("\n" \
+ "1: "MOVES"."#bwl" %2,%1\n" \
+ "2:\n" \
+ " .section .fixup,\"ax\"\n" \
+ " .even\n" \
+ "10: move.l %3,%0\n" \
+ " sub.l %1,%1\n" \
+ " jra 2b\n" \
+ " .previous\n" \
+ "\n" \
+ " .section __ex_table,\"a\"\n" \
+ " .align 4\n" \
+ " .long 1b,10b\n" \
+ " .previous" \
+ : "+d" (res), "=&" #reg (__gu_val) \
+ : "m" (*(ptr)), "i" (err)); \
+ (x) = (__force typeof(*(ptr)))(__force unsigned long)__gu_val; \
})
#define __get_user(x, ptr) \
@@ -188,7 +188,7 @@ asm volatile ("\n" \
"+a" (__gu_ptr) \
: "i" (-EFAULT) \
: "memory"); \
- (x) = (typeof(*(ptr)))__gu_val; \
+ (x) = (__force typeof(*(ptr)))__gu_val; \
break; \
} */ \
default: \