[PATCH] iio: adc: aspeed: propagate reset deassert errors

[Pengpeng Hou]

aspeed_adc_probe() continues to register ADC resources after deasserting
the shared reset, even if the reset controller reports a failure.

A failed deassertion leaves the hardware unavailable, so stop probing
before
installing the cleanup action and enabling the ADC.

Fixes: edf7550a1f93 ("iio: adc: aspeed: Deassert reset in probe")
Signed-off-by: Pengpeng Hou <pengpeng@xxxxxxxxxxx>
---
 drivers/iio/adc/aspeed_adc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c
index 6169ce28261e1..452c30cf04f28 100644
--- a/drivers/iio/adc/aspeed_adc.c
+++ b/drivers/iio/adc/aspeed_adc.c
@@ -585,7 +585,9 @@ static int aspeed_adc_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, PTR_ERR(data->rst),
 				     "invalid or missing reset controller device tree entry");
 
-	reset_control_deassert(data->rst);
+	ret = reset_control_deassert(data->rst);
+	if (ret)
+		return ret;
 
 	ret = devm_add_action_or_reset(dev, aspeed_adc_reset_assert, data->rst);
 	if (ret)

base-commit: 08dbfad3f5040f5bdb6c529da20d6d4e81fefd72
-- 
2.50.1