[PATCH] i2c: mux: reg: don't log an error for probe deferral

[Alexander Sverdlin <alexander.sverdlin@nokia.com>]

From: Tomasz Bachorski <tomasz.bachorski@nokia.com>

It's possible that i2c_mux_reg_probe_dt() could return -EPROBE_DEFER.
In that case, driver will request a probe deferral and an error
suggesting device tree parsing problem will be reported. This is
a pretty confusing information. Let's change the error handling,
so driver will be able to request probe deferral without logging
not related errors.

Signed-off-by: Tomasz Bachorski <tomasz.bachorski@nokia.com>
---
 drivers/i2c/muxes/i2c-mux-reg.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/muxes/i2c-mux-reg.c b/drivers/i2c/muxes/i2c-mux-reg.c
index f6c9c3dc6cad..e0be96e77231 100644
--- a/drivers/i2c/muxes/i2c-mux-reg.c
+++ b/drivers/i2c/muxes/i2c-mux-reg.c
@@ -177,7 +177,9 @@ static int i2c_mux_reg_probe(struct platform_device *pdev)
 			sizeof(mux->data));
 	} else {
 		ret = i2c_mux_reg_probe_dt(mux, pdev);
-		if (ret < 0) {
+		if (ret == -EPROBE_DEFER) {
+			return ret;
+		} else if (ret < 0) {
 			dev_err(&pdev->dev, "Error parsing device tree");
 			return ret;
 		}
-- 
2.13.2