[PATCH] hwmon: aspeed-pwm-tacho: propagate reset deassert errors

[Pengpeng Hou]

aspeed_pwm_tacho_probe() installs its reset cleanup action and configures
the
controller after an unchecked reset deassertion.

Stop probing when the reset controller rejects the transition, before the
hwmon device becomes visible.

Fixes: 18c514cc0e02 ("hwmon: (aspeed-pwm-tacho) Deassert reset in probe")
Signed-off-by: Pengpeng Hou <pengpeng at iscas.ac.cn>
---
 drivers/hwmon/aspeed-pwm-tacho.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/aspeed-pwm-tacho.c b/drivers/hwmon/aspeed-pwm-tacho.c
index 1c5945d4ba377..bfce589c3fb1f 100644
--- a/drivers/hwmon/aspeed-pwm-tacho.c
+++ b/drivers/hwmon/aspeed-pwm-tacho.c
@@ -934,7 +934,9 @@ static int aspeed_pwm_tacho_probe(struct platform_device *pdev)
 			"missing or invalid reset controller device tree entry");
 		return PTR_ERR(priv->rst);
 	}
-	reset_control_deassert(priv->rst);
+	ret = reset_control_deassert(priv->rst);
+	if (ret)
+		return ret;
 
 	ret = devm_add_action_or_reset(dev, aspeed_pwm_tacho_remove, priv);
 	if (ret)

base-commit: 08dbfad3f5040f5bdb6c529da20d6d4e81fefd72
-- 
2.50.1