[U-Boot] [PATCH v2 2/2] cmd: sata: add null pointer check for dev

[Marcel Ziswiler]

From: Marcel Ziswiler <marcel.ziswiler at toradex.com>

Calling sata_scan() with a null pointer probably won't make much sense.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>
Reviewed-by: Simon Glass <sjg at chromium.org>

---

Changes in v2:
- Added Simon's reviewed-by.

 cmd/sata.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmd/sata.c b/cmd/sata.c
index 6d62ba8f74..a73cc54bd3 100644
--- a/cmd/sata.c
+++ b/cmd/sata.c
@@ -60,6 +60,10 @@ int sata_probe(int devnum)
 		printf("Cannot probe SATA device %d (err=%d)\n", devnum, rc);
 		return CMD_RET_FAILURE;
 	}
+	if (!dev) {
+		printf("No SATA device found!\n");
+		return CMD_RET_FAILURE;
+	}
 	rc = sata_scan(dev);
 	if (rc) {
 		printf("Cannot scan SATA device %d (err=%d)\n", devnum, rc);
-- 
2.20.1