Hi Alex, On 02/04/2020 19:34, Alex Riesen wrote: > To avoid setting it up even if the hardware is not actually connected > to anything physically. > > Besides, the bindings explicitly notes that port definitions are > "optional if they are not connected to anything at the hardware level". > > Signed-off-by: Alexander Riesen <alexander.riesen@xxxxxxxxxxx> > --- > drivers/media/i2c/adv748x/adv748x-dai.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/media/i2c/adv748x/adv748x-dai.c b/drivers/media/i2c/adv748x/adv748x-dai.c > index 185f78023e91..f9cc47fa9ad1 100644 > --- a/drivers/media/i2c/adv748x/adv748x-dai.c > +++ b/drivers/media/i2c/adv748x/adv748x-dai.c > @@ -216,6 +216,11 @@ int adv748x_dai_init(struct adv748x_dai *dai) > int ret; > struct adv748x_state *state = adv748x_dai_to_state(dai); > > + if (!state->endpoints[ADV748X_PORT_I2S]) { > + adv_info(state, "no I2S port, DAI disabled\n"); > + ret = 0; > + goto fail; How about just 'return 0'? > + } And a blank line here ... Otherwise, Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx> This could also be folded into 5/9 too I guess?, though it is easier to review the sequential additions, rather than the one-big-feature addition ;-) > dai->mclk_name = kasprintf(GFP_KERNEL, "%s.%s-i2s-mclk", > state->dev->driver->name, > dev_name(state->dev)); > -- Regards -- Kieran