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cmd: sf: fix map_physmem check

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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>
This commit is contained in:
Liam Beguin 2018-03-14 19:15:11 -04:00 committed by Tom Rini
parent aa1ced7f09
commit 10f087f73f
1 changed files with 1 additions and 1 deletions
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2
cmd/sf.c
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@ -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;
}