sandbox: Silence coverity warning in state_read_file()

In this case the value seems save to pass to os_free(). Add a comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Coverity (CID: 165109)

diff --git a/arch/sandbox/cpu/state.c b/arch/sandbox/cpu/state.c
index f63cfd3..a4d99ba 100644 (file)
--- a/arch/sandbox/cpu/state.c
+++ b/arch/sandbox/cpu/state.c
@@ -78,6 +78,10 @@ static int state_read_file(struct sandbox_state *state, const char *fname)
 err_read:
        os_close(fd);
 err_open:
+       /*
+        * tainted scalar, since size is obtained from the file. But we can rely
+        * on os_malloc() to handle invalid values.
+        */
        os_free(state->state_fdt);
        state->state_fdt = NULL;