seqlock: constify seqlock_read_begin

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/include/qemu/seqlock.h b/include/qemu/seqlock.h
index 8dee11d10104f77adf6325bd0f90a8ca05fdce3f..c367516708992cd8ccc8d9a74d863449d0c6bebe 100644 (file)
--- a/include/qemu/seqlock.h
+++ b/include/qemu/seqlock.h
@@ -45,7 +45,7 @@ static inline void seqlock_write_end(QemuSeqLock *sl)
     atomic_set(&sl->sequence, sl->sequence + 1);
 }
 
-static inline unsigned seqlock_read_begin(QemuSeqLock *sl)
+static inline unsigned seqlock_read_begin(const QemuSeqLock *sl)
 {
     /* Always fail if a write is in progress.  */
     unsigned ret = atomic_read(&sl->sequence);