tty: serial: msm_serial: Don't require DT aliases
authorStephen Boyd <sboyd@codeaurora.org>
Fri, 14 Nov 2014 18:39:21 +0000 (10:39 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 24 Nov 2014 19:28:23 +0000 (11:28 -0800)
commit7920408b0c8292831f064ea33f56aa307b221a2c
tree7254a6378aae80e1366d3cd5f4524a00809e5660
parent52c40fca1a80abaffd9f7315de568d89a2064734
tty: serial: msm_serial: Don't require DT aliases

If there isn't a DT alias then of_alias_get_id() will return
-ENODEV. This will cause the msm_serial driver to fail probe,
when we want to keep the previous behavior where we generated a
dynamic line number at probe time. Restore this behavior by
generating a dynamic id if the line number is still negative
after checking for an alias or in the non-DT case looking at the
.id field of the platform device.

Reported-by: Kevin Hilman <khilman@kernel.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/msm_serial.c