[PATCH 16/89] i2c: davinci: Improve error reporting for problems during .remove()

Uwe Kleine-König u.kleine-koenig at pengutronix.de
Mon May 8 13:51:53 PDT 2023


If pm_runtime_get() fails in .remove() the driver used to return the
error to the driver core. The only effect of this (compared to returning
zero) is a generic warning that the error value is ignored. (The device
is unbound then anyhow.)

Emit a better warning and return zero to suppress the generic (and
little helpful) message. Also disable runtime PM in the error case.

This prepares changing platform device remove callbacks to return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
 drivers/i2c/busses/i2c-davinci.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 9750310f2c96..7ba7e6cbcc97 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -894,11 +894,11 @@ static int davinci_i2c_remove(struct platform_device *pdev)
 
 	i2c_del_adapter(&dev->adapter);
 
-	ret = pm_runtime_resume_and_get(&pdev->dev);
+	ret = pm_runtime_get_sync(&pdev->dev);
 	if (ret < 0)
-		return ret;
-
-	davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, 0);
+		dev_err(&pdev->dev, "Failed to resume device\n");
+	else
+		davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, 0);
 
 	pm_runtime_dont_use_autosuspend(dev->dev);
 	pm_runtime_put_sync(dev->dev);
-- 
2.39.2




More information about the linux-arm-kernel mailing list