[U-Boot] [PATCH v4 2/7] 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 f971eec781cc..e7ff9a646208 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; }