diff --git a/programmer.c b/programmer.c
index 943886b..a8218a3 100644
--- a/programmer.c
+++ b/programmer.c
@@ -85,6 +85,14 @@
 			    void *data)
 {
 	struct registered_master rmst;
+
+	if (mst->shutdown) {
+		if (register_shutdown(mst->shutdown, data)) {
+			mst->shutdown(data); /* cleanup */
+			return 1;
+		}
+	}
+
 	if (!mst->chip_writeb || !mst->chip_writew || !mst->chip_writel ||
 	    !mst->chip_writen || !mst->chip_readb || !mst->chip_readw ||
 	    !mst->chip_readl || !mst->chip_readn) {
diff --git a/programmer.h b/programmer.h
index deaafc4..d392027 100644
--- a/programmer.h
+++ b/programmer.h
@@ -425,6 +425,7 @@
 	uint16_t (*chip_readw) (const struct flashctx *flash, const chipaddr addr);
 	uint32_t (*chip_readl) (const struct flashctx *flash, const chipaddr addr);
 	void (*chip_readn) (const struct flashctx *flash, uint8_t *buf, const chipaddr addr, size_t len);
+	int (*shutdown)(void *data);
 	void *data;
 };
 int register_par_master(const struct par_master *mst, const enum chipbustype buses, void *data);