From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ionut Nicu Subject: [PATCH 1/2] i2c-mux-gpio: use deferred probing Date: Wed, 09 Oct 2013 11:50:45 +0200 Message-ID: <525526F5.5030107@nsn.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Peter Korsgaard Cc: Wolfram Sang , Alexander Sverdlin , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-i2c@vger.kernel.org If the i2c-parent bus driver is not loaded, returning -ENODEV 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 | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c index 5d4a99b..ff184eb 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); @@ -177,7 +177,7 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev) if (!parent) { dev_err(&pdev->dev, "Parent adapter (%d) not found\n", mux->data.parent); - return -ENODEV; + return -EPROBE_DEFER; } mux->parent = parent; -- 1.7.1