i2c: imx: defer probe if bus recovery GPIOs are not ready

[cascardo/linux.git] / drivers / i2c / busses / i2c-imx.c

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 592a8f2..47fc1f1 100644 (file)
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1009,10 +1009,13 @@ static int i2c_imx_init_recovery_info(struct imx_i2c_struct *i2c_imx,
        rinfo->sda_gpio = of_get_named_gpio(pdev->dev.of_node, "sda-gpios", 0);
        rinfo->scl_gpio = of_get_named_gpio(pdev->dev.of_node, "scl-gpios", 0);
 
-       if (!gpio_is_valid(rinfo->sda_gpio) ||
-           !gpio_is_valid(rinfo->scl_gpio) ||
-           IS_ERR(i2c_imx->pinctrl_pins_default) ||
-           IS_ERR(i2c_imx->pinctrl_pins_gpio)) {
+       if (rinfo->sda_gpio == -EPROBE_DEFER ||
+           rinfo->scl_gpio == -EPROBE_DEFER) {
+               return -EPROBE_DEFER;
+       } else if (!gpio_is_valid(rinfo->sda_gpio) ||
+                  !gpio_is_valid(rinfo->scl_gpio) ||
+                  IS_ERR(i2c_imx->pinctrl_pins_default) ||
+                  IS_ERR(i2c_imx->pinctrl_pins_gpio)) {
                dev_dbg(&pdev->dev, "recovery information incomplete\n");
                return 0;
        }