[PATCH 02/14] cmd: sf: Print error on test failure

[Sean Anderson]

The sf test command is used to test spi flashes (and spi masters). Printing
the exact error code is very helpful to those debugging the spi stack.

Signed-off-by: Sean Anderson <seanga2 at gmail.com>
---

 cmd/sf.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/cmd/sf.c b/cmd/sf.c
index de80fcd38b..46346fb9d4 100644
--- a/cmd/sf.c
+++ b/cmd/sf.c
@@ -445,20 +445,22 @@ static int spi_flash_test(struct spi_flash *flash, uint8_t *buf, ulong len,
 			   ulong offset, uint8_t *vbuf)
 {
 	struct test_info test;
-	int i;
+	int err, i;
 
 	printf("SPI flash test:\n");
 	memset(&test, '\0', sizeof(test));
 	test.base_ms = get_timer(0);
 	test.bytes = len;
-	if (spi_flash_erase(flash, offset, len)) {
-		printf("Erase failed\n");
+	err = spi_flash_erase(flash, offset, len);
+	if (err) {
+		printf("Erase failed (err = %d)\n", err);
 		return -1;
 	}
 	spi_test_next_stage(&test);
 
-	if (spi_flash_read(flash, offset, len, vbuf)) {
-		printf("Check read failed\n");
+	err = spi_flash_read(flash, offset, len, vbuf);
+	if (err) {
+		printf("Check read failed (err = %d)\n", err);
 		return -1;
 	}
 	for (i = 0; i < len; i++) {
@@ -471,15 +473,17 @@ static int spi_flash_test(struct spi_flash *flash, uint8_t *buf, ulong len,
 	}
 	spi_test_next_stage(&test);
 
-	if (spi_flash_write(flash, offset, len, buf)) {
-		printf("Write failed\n");
+	err = spi_flash_write(flash, offset, len, buf);
+	if (err) {
+		printf("Write failed (err = %d)\n", err);
 		return -1;
 	}
 	memset(vbuf, '\0', len);
 	spi_test_next_stage(&test);
 
-	if (spi_flash_read(flash, offset, len, vbuf)) {
-		printf("Read failed\n");
+	err = spi_flash_read(flash, offset, len, vbuf);
+	if (err) {
+		printf("Read failed (ret = %d)\n", err);
 		return -1;
 	}
 	spi_test_next_stage(&test);
-- 
2.29.2