From 10f087f73fff024c81439b50423ba69589d5c161 Mon Sep 17 00:00:00 2001
From: Liam Beguin <liambeguin@gmail.com>
Date: Wed, 14 Mar 2018 19:15:11 -0400
Subject: [PATCH] cmd: sf: fix map_physmem check
Make sure 0x00 is a valid address to read to. If `addr` is 0x00 then
map_physmem() will return 0 which should be a valid address.
Signed-off-by: Liam Beguin <liambeguin@gmail.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
---
cmd/sf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cmd/sf.c b/cmd/sf.c
index f971eec781..e7ff9a6462 100644
--- a/cmd/sf.c
+++ b/cmd/sf.c
@@ -287,7 +287,7 @@ static int do_spi_flash_read_write(int argc, char * const argv[])
}
buf = map_physmem(addr, len, MAP_WRBACK);
- if (!buf) {
+ if (!buf && addr) {
puts("Failed to map physical memory\n");
return 1;
}
--
2.39.5