tree a2406d9339555f5a684647b2a284caf425d02ce8
parent a7d2b4d4a0f911397d561c3c70c78bfaf5c478c4
author Dmitry Grinberg <dmitrygr@google.com> 1452712880 -0800
committer Dmitry Grinberg <dmitrygr@google.com> 1452720315 -0800

stm32f4xx_spi: do not use nss GPIO handle unless it is actually valid

Change-Id: I994d49d355862dc0338184608269f0a525e13945