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-rw-r--r--include/chardev/char.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/chardev/char.h b/include/chardev/char.h
index a319b5fdff..44cd82e405 100644
--- a/include/chardev/char.h
+++ b/include/chardev/char.h
@@ -186,7 +186,7 @@ int qemu_chr_be_can_write(Chardev *s);
  * the caller should call @qemu_chr_be_can_write to determine how much data
  * the front end can currently accept.
  */
-void qemu_chr_be_write(Chardev *s, uint8_t *buf, int len);
+void qemu_chr_be_write(Chardev *s, const uint8_t *buf, int len);
 
 /**
  * qemu_chr_be_write_impl:
@@ -195,7 +195,7 @@ void qemu_chr_be_write(Chardev *s, uint8_t *buf, int len);
  *
  * Implementation of back end writing. Used by replay module.
  */
-void qemu_chr_be_write_impl(Chardev *s, uint8_t *buf, int len);
+void qemu_chr_be_write_impl(Chardev *s, const uint8_t *buf, int len);
 
 /**
  * qemu_chr_be_update_read_handlers: