scsi: hisi_sas: Convert to platform remove callback returning void

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 (mostly) ignored 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.

hisi_sas_remove() returned zero unconditionally so this was changed to
return void. Then it has the right prototype to be used directly as remove
callback for the two hisi_sas drivers.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230518202043.261739-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index fb7c52c119df12bbfa146c96039e67714983a80d..9e73e9cbbcfc6c45fbb17b706aa3003a77ea3821 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -642,7 +642,7 @@ extern void hisi_sas_sata_done(struct sas_task *task,
 extern int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba);
 extern int hisi_sas_probe(struct platform_device *pdev,
                          const struct hisi_sas_hw *ops);
-extern int hisi_sas_remove(struct platform_device *pdev);
+extern void hisi_sas_remove(struct platform_device *pdev);
 
 extern int hisi_sas_slave_configure(struct scsi_device *sdev);
 extern int hisi_sas_slave_alloc(struct scsi_device *sdev);

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 412431c901a72aa1126cb8bfa638f99612a2ac9c..8f22ece957bd4d3b5b88a16f3d3ceb5730af64da 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -2560,7 +2560,7 @@ err_out_ha:
 }
 EXPORT_SYMBOL_GPL(hisi_sas_probe);
 
-int hisi_sas_remove(struct platform_device *pdev)
+void hisi_sas_remove(struct platform_device *pdev)
 {
        struct sas_ha_struct *sha = platform_get_drvdata(pdev);
        struct hisi_hba *hisi_hba = sha->lldd_ha;
@@ -2573,7 +2573,6 @@ int hisi_sas_remove(struct platform_device *pdev)
 
        hisi_sas_free(hisi_hba);
        scsi_host_put(shost);
-       return 0;
 }
 EXPORT_SYMBOL_GPL(hisi_sas_remove);
 

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index 0aa8c9c88535559c8d52a58732e6fa86202777ee..94fbbceddc2e6faeb7f9219e7db0cc4ad7e8417d 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -1790,11 +1790,6 @@ static int hisi_sas_v1_probe(struct platform_device *pdev)
        return hisi_sas_probe(pdev, &hisi_sas_v1_hw);
 }
 
-static int hisi_sas_v1_remove(struct platform_device *pdev)
-{
-       return hisi_sas_remove(pdev);
-}
-
 static const struct of_device_id sas_v1_of_match[] = {
        { .compatible = "hisilicon,hip05-sas-v1",},
        {},
@@ -1810,7 +1805,7 @@ MODULE_DEVICE_TABLE(acpi, sas_v1_acpi_match);
 
 static struct platform_driver hisi_sas_v1_driver = {
        .probe = hisi_sas_v1_probe,
-       .remove = hisi_sas_v1_remove,
+       .remove_new = hisi_sas_remove,
        .driver = {
                .name = DRV_NAME,
                .of_match_table = sas_v1_of_match,

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index cd78e4c983aa8d1a251399e6b3a85523f4c68fc4..87d8e408ccd1ced81601292d57eade447bab65a0 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -3619,11 +3619,6 @@ static int hisi_sas_v2_probe(struct platform_device *pdev)
        return hisi_sas_probe(pdev, &hisi_sas_v2_hw);
 }
 
-static int hisi_sas_v2_remove(struct platform_device *pdev)
-{
-       return hisi_sas_remove(pdev);
-}
-
 static const struct of_device_id sas_v2_of_match[] = {
        { .compatible = "hisilicon,hip06-sas-v2",},
        { .compatible = "hisilicon,hip07-sas-v2",},
@@ -3640,7 +3635,7 @@ MODULE_DEVICE_TABLE(acpi, sas_v2_acpi_match);
 
 static struct platform_driver hisi_sas_v2_driver = {
        .probe = hisi_sas_v2_probe,
-       .remove = hisi_sas_v2_remove,
+       .remove_new = hisi_sas_remove,
        .driver = {
                .name = DRV_NAME,
                .of_match_table = sas_v2_of_match,