st-info: Add support for OpenOCD hla_serial printing

[fw/stlink] / src / stlink-common.c

diff --git a/src/stlink-common.c b/src/stlink-common.c
index 3a6e260d1706c194641e36daf4516d671d75037f..18c76fb86c109b242d32c7f8080a88d67941ca60 100644 (file)
--- a/src/stlink-common.c
+++ b/src/stlink-common.c
@@ -481,6 +481,8 @@ static inline void write_flash_cr_bker_pnb(stlink_t *sl, uint32_t n) {
 
 void stlink_close(stlink_t *sl) {
     DLOG("*** stlink_close ***\n");
+    if (!sl)
+         return;
     sl->backend->close(sl);
     free(sl);
 }