cmd/usb_mass_storage.c: Rework ums_init() ret logic slightly
authorTom Rini <trini@konsulko.com>
Wed, 20 Apr 2016 14:59:32 +0000 (10:59 -0400)
committerTom Rini <trini@konsulko.com>
Wed, 20 Apr 2016 17:21:24 +0000 (13:21 -0400)
commita238b0dacffd305f78fc23b2151521cce2384311
tree7f9482716644e4357f8750e75ad68c73d63d6c3d
parenteb6b50f631628f48b7e72432ae878e6ff0e306c3
cmd/usb_mass_storage.c: Rework ums_init() ret logic slightly

Previously, ret could be used uninitialized if
blk_get_device_part_str() failed.  Default to ret being set to -1 so
that we always return an err up if we have a problem and then invert the
logic on testing ums_count as when that is non-zero is the time we can
return 0.

Cc: John Tobias <john.tobias.ph@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
cmd/usb_mass_storage.c