[PATCH 5/7] xyz-modem: Properly abort/terminate transfer on error

["Pali Rohár" <pali@kernel.org>]

Transfer termination tries to instruct sender that transfer was terminated.

Print error message and indicates aborted transfer in return value.

Signed-off-by: Pali Rohár <pali@kernel.org>
---
 cmd/load.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/cmd/load.c b/cmd/load.c
index fb8c191fb64f..1ed05a9cd21e 100644
--- a/cmd/load.c
+++ b/cmd/load.c
@@ -975,6 +975,7 @@ static ulong load_serial_ymodem(ulong offset, int mode)
 	res = xyzModem_stream_open(&info, &err);
 	if (!res) {
 
+		err = 0;
 		while ((res =
 			xyzModem_stream_read(ymodemBuf, 1024, &err)) > 0) {
 			store_addr = addr + offset;
@@ -987,6 +988,9 @@ static ulong load_serial_ymodem(ulong offset, int mode)
 				rc = flash_write((char *) ymodemBuf,
 						  store_addr, res);
 				if (rc != 0) {
+					xyzModem_stream_terminate(true, &getcxmodem);
+					xyzModem_stream_close(&err);
+					printf("\n");
 					flash_perror(rc);
 					return (~0);
 				}
@@ -998,12 +1002,20 @@ static ulong load_serial_ymodem(ulong offset, int mode)
 			}
 
 		}
+		if (err) {
+			xyzModem_stream_terminate((err == xyzModem_cancel) ? false : true, &getcxmodem);
+			xyzModem_stream_close(&err);
+			printf("\n%s\n", xyzModem_error(err));
+			return (~0); /* Download aborted */
+		}
+
 		if (IS_ENABLED(CONFIG_CMD_BOOTEFI))
 			efi_set_bootdev("Uart", "", "",
 					map_sysmem(offset, 0), size);
 
 	} else {
-		printf("%s\n", xyzModem_error(err));
+		printf("\n%s\n", xyzModem_error(err));
+		return (~0); /* Download aborted */
 	}
 
 	xyzModem_stream_terminate(false, &getcxmodem);
-- 
2.20.1