From: H Hartley Sweeten Date: Tue, 22 Mar 2016 18:10:34 +0000 (-0700) Subject: staging: comedi: ni_660x: add a comment about the initial DIO state X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f0c9305ede52b42021ea53a33b3a2878e0c5d51e;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git staging: comedi: ni_660x: add a comment about the initial DIO state The (*auto_attach) initializes all the DIO channels to a default state. Add a comment for clarity. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/ni_660x.c b/drivers/staging/comedi/drivers/ni_660x.c index 3415a15650fe..6f84946ea9a4 100644 --- a/drivers/staging/comedi/drivers/ni_660x.c +++ b/drivers/staging/comedi/drivers/ni_660x.c @@ -1073,6 +1073,11 @@ static int ni_660x_auto_attach(struct comedi_device *dev, for (i = 0; i < n_counters; ++i) ni_tio_init_counter(&devpriv->counter_dev->counters[i]); + /* + * Default the DIO channels as: + * chan 0-7: DIO inputs + * chan 8-39: counter signal inputs + */ for (i = 0; i < NUM_PFI_CHANNELS; ++i) { if (i < 8) ni_660x_set_pfi_routing(dev, i, NI_660X_PFI_OUTPUT_DIO);