From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liam Beguin Date: Tue, 13 Mar 2018 22:03:02 -0400 Subject: [U-Boot] [PATCH v3 2/7] cmd: sf: fix map_physmem check In-Reply-To: <20180314020307.23475-1-liambeguin@gmail.com> References: <20180314020307.23475-1-liambeguin@gmail.com> Message-ID: <20180314020307.23475-3-liambeguin@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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 --- 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; } -- 2.16.1.72.g5be1f00a9a70