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[04/14] scsi: bvme6000: Convert to platform remove callback returning void

Message ID 63294479a4e745210c078859afa88904fa0b3be8.1701619134.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/bvme6000_scsi.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/bvme6000_scsi.c b/drivers/scsi/bvme6000_scsi.c
index 8d72b25535c5..f893e9779e9d 100644
--- a/drivers/scsi/bvme6000_scsi.c
+++ b/drivers/scsi/bvme6000_scsi.c
@@ -89,7 +89,7 @@  bvme6000_probe(struct platform_device *dev)
 	return -ENODEV;
 }
 
-static int
+static void
 bvme6000_device_remove(struct platform_device *dev)
 {
 	struct Scsi_Host *host = platform_get_drvdata(dev);
@@ -99,8 +99,6 @@  bvme6000_device_remove(struct platform_device *dev)
 	NCR_700_release(host);
 	kfree(hostdata);
 	free_irq(host->irq, host);
-
-	return 0;
 }
 
 static struct platform_driver bvme6000_scsi_driver = {
@@ -108,7 +106,7 @@  static struct platform_driver bvme6000_scsi_driver = {
 		.name		= "bvme6000-scsi",
 	},
 	.probe		= bvme6000_probe,
-	.remove		= bvme6000_device_remove,
+	.remove_new	= bvme6000_device_remove,
 };
 
 static int __init bvme6000_scsi_init(void)