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[11/14] scsi: sni_53c710: Convert to platform remove callback returning void

Message ID 2f4b7366ca00a107a9595514795e909e632980da.1701619134.git.u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted
Headers show
Series scsci: Convert to platform remove callback returning void | expand

Commit Message

Uwe Kleine-König Dec. 3, 2023, 4:05 p.m. UTC
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

In the error path emit an error message replacing the (less useful)
message by the core. Apart from the improved error message there is no
change in behaviour.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/scsi/sni_53c710.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
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Patch

diff --git a/drivers/scsi/sni_53c710.c b/drivers/scsi/sni_53c710.c
index 678651b9b4dd..9df1c90a24c1 100644
--- a/drivers/scsi/sni_53c710.c
+++ b/drivers/scsi/sni_53c710.c
@@ -104,7 +104,7 @@  static int snirm710_probe(struct platform_device *dev)
 	return -ENODEV;
 }
 
-static int snirm710_driver_remove(struct platform_device *dev)
+static void snirm710_driver_remove(struct platform_device *dev)
 {
 	struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
 	struct NCR_700_Host_Parameters *hostdata =
@@ -115,13 +115,11 @@  static int snirm710_driver_remove(struct platform_device *dev)
 	free_irq(host->irq, host);
 	iounmap(hostdata->base);
 	kfree(hostdata);
-
-	return 0;
 }
 
 static struct platform_driver snirm710_driver = {
 	.probe	= snirm710_probe,
-	.remove	= snirm710_driver_remove,
+	.remove_new = snirm710_driver_remove,
 	.driver	= {
 		.name	= "snirm_53c710",
 	},