[U-Boot] [PATCH] nand: Fix set_dev checks for no device

[Tony Lindgren]

If we do nand device 0 command in u-boot on a device that has NAND support
enabled but no NAND chip, we can get data abort at least on omaps.

Fix the issue by adding a check for nand_info[dev].

Signed-off-by: Tony Lindgren <tony at atomide.com>
--- a/cmd/nand.c
+++ b/cmd/nand.c
@@ -116,7 +116,7 @@ free_dat:
 static int set_dev(int dev)
 {
 	if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
-	    !nand_info[dev]->name) {
+	    !nand_info[dev] || !nand_info[dev]->name) {
 		puts("No such device\n");
 		return -1;
 	}
-- 
2.9.3