From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ionut Nicu Subject: [PATCH 1/2] i2c-mux-gpio: use deferred probing with the device tree Date: Tue, 08 Oct 2013 15:51:50 +0200 Message-ID: <52540DF6.6050407@nsn.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Peter Korsgaard Cc: Wolfram Sang , Alexander Sverdlin , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-i2c@vger.kernel.org If the i2c-parent bus driver is not loaded, returning -EINVAL will force people to unload and then reload the module again to get it working. Signed-off-by: Ionut Nicu --- drivers/i2c/muxes/i2c-mux-gpio.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c index 5d4a99b..eb99f04 100644 --- a/drivers/i2c/muxes/i2c-mux-gpio.c +++ b/drivers/i2c/muxes/i2c-mux-gpio.c @@ -79,7 +79,7 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux, adapter = of_find_i2c_adapter_by_node(adapter_np); if (!adapter) { dev_err(&pdev->dev, "Cannot find parent bus\n"); - return -ENODEV; + return -EPROBE_DEFER; } mux->data.parent = i2c_adapter_id(adapter); put_device(&adapter->dev); -- 1.7.1