abuf: Add a helper for initing and allocating a buffer

This construct appears in various places. Reduce code size by adding a
function for it.

It inits the abuf, then allocates it to the requested size.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/abuf.c b/lib/abuf.c
index 61adf7fc6b1..3cbe320fb08 100644
--- a/lib/abuf.c
+++ b/lib/abuf.c
@@ -119,6 +119,15 @@ void abuf_init_set(struct abuf *abuf, void *data, size_t size)
 	abuf_set(abuf, data, size);
 }
 
+bool abuf_init_size(struct abuf *buf, size_t size)
+{
+	abuf_init(buf);
+	if (!abuf_realloc(buf, size))
+		return false;
+
+	return true;
+}
+
 void abuf_init_const(struct abuf *abuf, const void *data, size_t size)
 {
 	/* for now there is no flag indicating that the abuf data is constant */