That patch causes the network interface on the device to stop working.
device_initcall() is called much later than core_initcall_sync() and
that seem to be a problem. Revert it to get a correct behaviour.

Signed-off-by: Sergio Paracuellos <sergio.paracuel...@gmail.com>
---
 drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c 
b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
index c223ecb..b8566ed 100644
--- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
+++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
@@ -423,4 +423,9 @@ static struct platform_driver rt2880_pinmux_driver = {
        },
 };
 
-builtin_platform_driver(rt2880_pinmux_driver);
+int __init rt2880_pinmux_init(void)
+{
+       return platform_driver_register(&rt2880_pinmux_driver);
+}
+
+core_initcall_sync(rt2880_pinmux_init);
-- 
2.7.4

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