linux-kernel - [PATCH] input: da7280: Make use of the helper function dev_err

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Message-Id: <20220216054643.21829-1-zhaoxiao@uniontech.com>
Date:   Wed, 16 Feb 2022 13:46:43 +0800
From:   zhaoxiao <zhaoxiao@...ontech.com>
To:     dmitry.torokhov@...il.com
Cc:     support.opensource@...semi.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, zhaoxiao <zhaoxiao@...ontech.com>
Subject: [PATCH] input: da7280: Make use of the helper function dev_err_probe()

devm_pwm_get() can return -EPROBE_DEFER if the pwm regulator is not
ready yet. Use dev_err_probe() for pwm regulator resources
to indicate the deferral reason when waiting for the
resource to come up.

Signed-off-by: zhaoxiao <zhaoxiao@...ontech.com>
---
 drivers/input/misc/da7280.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/input/misc/da7280.c b/drivers/input/misc/da7280.c
index b08610d6e575..16b364a4ef5e 100644
--- a/drivers/input/misc/da7280.c
+++ b/drivers/input/misc/da7280.c
@@ -1165,12 +1165,9 @@ static int da7280_probe(struct i2c_client *client,
 
 	if (haptics->const_op_mode == DA7280_PWM_MODE) {
 		haptics->pwm_dev = devm_pwm_get(dev, NULL);
-		error = PTR_ERR_OR_ZERO(haptics->pwm_dev);
-		if (error) {
-			if (error != -EPROBE_DEFER)
-				dev_err(dev, "Unable to request PWM: %d\n",
-					error);
-			return error;
+		if (IS_ERR(haptics->pwm_dev))
+			return dev_err_probe(dev, PTR_ERR(haptics->pwm_dev),
+					"Unable to request PWM\n");
 		}
 
 		/* Sync up PWM state and ensure it is off. */
-- 
2.20.1