[PATCH v3] powerpc: macio: Make remove callback of macio driver void returned

[PATCH v3] powerpc: macio: Make remove callback of macio driver void returned

[Dawei Li]

Commit fc7a6209d571 ("bus: Make remove callback return void") forces
bus_type::remove be void-returned, it doesn't make much sense for any
bus based driver implementing remove callbalk to return non-void to
its caller.

This change is for macio bus based drivers.

Signed-off-by: Dawei Li <set_pte_at@outlook.com>
---
v2 -> v3
- Rebased on latest powerpc/next.
- cc' to relevant subsysem lists.

v1 -> v2
- Revert unneeded changes.
- Rebased on latest powerpc/next.

v1
- https://lore.kernel.org/all/TYCP286MB2323FCDC7ECD87F8D97CB74BCA189@TYCP286MB2323.JPNP286.PROD.OUTLOOK.COM/
---
 arch/powerpc/include/asm/macio.h                | 2 +-
 drivers/ata/pata_macio.c                        | 4 +---
 drivers/macintosh/rack-meter.c                  | 4 +---
 drivers/net/ethernet/apple/bmac.c               | 4 +---
 drivers/net/ethernet/apple/mace.c               | 4 +---
 drivers/net/wireless/intersil/orinoco/airport.c | 4 +---
 drivers/scsi/mac53c94.c                         | 5 +----
 drivers/scsi/mesh.c                             | 5 +----
 drivers/tty/serial/pmac_zilog.c                 | 7 ++-----
 sound/aoa/soundbus/i2sbus/core.c                | 4 +---
 10 files changed, 11 insertions(+), 32 deletions(-)

diff --git a/arch/powerpc/include/asm/macio.h b/arch/powerpc/include/asm/macio.h
index ff5fd82d9ff0..cb9c386dacf8 100644
--- a/arch/powerpc/include/asm/macio.h
+++ b/arch/powerpc/include/asm/macio.h
@@ -125,7 +125,7 @@ static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev)
 struct macio_driver
 {
 	int	(*probe)(struct macio_dev* dev, const struct of_device_id *match);
-	int	(*remove)(struct macio_dev* dev);
+	void	(*remove)(struct macio_dev *dev);
 
 	int	(*suspend)(struct macio_dev* dev, pm_message_t state);
 	int	(*resume)(struct macio_dev* dev);
diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
index 9ccaac9e2bc3..653106716a4b 100644
--- a/drivers/ata/pata_macio.c
+++ b/drivers/ata/pata_macio.c
@@ -1187,7 +1187,7 @@ static int pata_macio_attach(struct macio_dev *mdev,
 	return rc;
 }
 
-static int pata_macio_detach(struct macio_dev *mdev)
+static void pata_macio_detach(struct macio_dev *mdev)
 {
 	struct ata_host *host = macio_get_drvdata(mdev);
 	struct pata_macio_priv *priv = host->private_data;
@@ -1202,8 +1202,6 @@ static int pata_macio_detach(struct macio_dev *mdev)
 	ata_host_detach(host);
 
 	unlock_media_bay(priv->mdev->media_bay);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
diff --git a/drivers/macintosh/rack-meter.c b/drivers/macintosh/rack-meter.c
index c28893e41a8b..f2f83c4f3af5 100644
--- a/drivers/macintosh/rack-meter.c
+++ b/drivers/macintosh/rack-meter.c
@@ -523,7 +523,7 @@ static int rackmeter_probe(struct macio_dev* mdev,
 	return rc;
 }
 
-static int rackmeter_remove(struct macio_dev* mdev)
+static void rackmeter_remove(struct macio_dev *mdev)
 {
 	struct rackmeter *rm = dev_get_drvdata(&mdev->ofdev.dev);
 
@@ -558,8 +558,6 @@ static int rackmeter_remove(struct macio_dev* mdev)
 
 	/* Get rid of me */
 	kfree(rm);
-
-	return 0;
 }
 
 static int rackmeter_shutdown(struct macio_dev* mdev)
diff --git a/drivers/net/ethernet/apple/bmac.c b/drivers/net/ethernet/apple/bmac.c
index 9e653e2925f7..292b1f9cd9e7 100644
--- a/drivers/net/ethernet/apple/bmac.c
+++ b/drivers/net/ethernet/apple/bmac.c
@@ -1591,7 +1591,7 @@ bmac_proc_info(char *buffer, char **start, off_t offset, int length)
 }
 #endif
 
-static int bmac_remove(struct macio_dev *mdev)
+static void bmac_remove(struct macio_dev *mdev)
 {
 	struct net_device *dev = macio_get_drvdata(mdev);
 	struct bmac_data *bp = netdev_priv(dev);
@@ -1609,8 +1609,6 @@ static int bmac_remove(struct macio_dev *mdev)
 	macio_release_resources(mdev);
 
 	free_netdev(dev);
-
-	return 0;
 }
 
 static const struct of_device_id bmac_match[] =
diff --git a/drivers/net/ethernet/apple/mace.c b/drivers/net/ethernet/apple/mace.c
index fd1b008b7208..e6350971c707 100644
--- a/drivers/net/ethernet/apple/mace.c
+++ b/drivers/net/ethernet/apple/mace.c
@@ -272,7 +272,7 @@ static int mace_probe(struct macio_dev *mdev, const struct of_device_id *match)
 	return rc;
 }
 
-static int mace_remove(struct macio_dev *mdev)
+static void mace_remove(struct macio_dev *mdev)
 {
 	struct net_device *dev = macio_get_drvdata(mdev);
 	struct mace_data *mp;
@@ -296,8 +296,6 @@ static int mace_remove(struct macio_dev *mdev)
 	free_netdev(dev);
 
 	macio_release_resources(mdev);
-
-	return 0;
 }
 
 static void dbdma_reset(volatile struct dbdma_regs __iomem *dma)
diff --git a/drivers/net/wireless/intersil/orinoco/airport.c b/drivers/net/wireless/intersil/orinoco/airport.c
index a890bfa0d5cc..276a06cdd1f5 100644
--- a/drivers/net/wireless/intersil/orinoco/airport.c
+++ b/drivers/net/wireless/intersil/orinoco/airport.c
@@ -85,7 +85,7 @@ airport_resume(struct macio_dev *mdev)
 	return err;
 }
 
-static int
+static void
 airport_detach(struct macio_dev *mdev)
 {
 	struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
@@ -111,8 +111,6 @@ airport_detach(struct macio_dev *mdev)
 
 	macio_set_drvdata(mdev, NULL);
 	free_orinocodev(priv);
-
-	return 0;
 }
 
 static int airport_hard_reset(struct orinoco_private *priv)
diff --git a/drivers/scsi/mac53c94.c b/drivers/scsi/mac53c94.c
index f75928f7773e..42648ca9b8ed 100644
--- a/drivers/scsi/mac53c94.c
+++ b/drivers/scsi/mac53c94.c
@@ -508,7 +508,7 @@ static int mac53c94_probe(struct macio_dev *mdev, const struct of_device_id *mat
 	return rc;
 }
 
-static int mac53c94_remove(struct macio_dev *mdev)
+static void mac53c94_remove(struct macio_dev *mdev)
 {
 	struct fsc_state *fp = (struct fsc_state *)macio_get_drvdata(mdev);
 	struct Scsi_Host *host = fp->host;
@@ -526,11 +526,8 @@ static int mac53c94_remove(struct macio_dev *mdev)
 	scsi_host_put(host);
 
 	macio_release_resources(mdev);
-
-	return 0;
 }
 
-
 static struct of_device_id mac53c94_match[] = 
 {
 	{
diff --git a/drivers/scsi/mesh.c b/drivers/scsi/mesh.c
index 84b541a57b7b..cd2575b88c85 100644
--- a/drivers/scsi/mesh.c
+++ b/drivers/scsi/mesh.c
@@ -1986,7 +1986,7 @@ static int mesh_probe(struct macio_dev *mdev, const struct of_device_id *match)
 	return -ENODEV;
 }
 
-static int mesh_remove(struct macio_dev *mdev)
+static void mesh_remove(struct macio_dev *mdev)
 {
 	struct mesh_state *ms = (struct mesh_state *)macio_get_drvdata(mdev);
 	struct Scsi_Host *mesh_host = ms->host;
@@ -2013,11 +2013,8 @@ static int mesh_remove(struct macio_dev *mdev)
 	macio_release_resources(mdev);
 
 	scsi_host_put(mesh_host);
-
-	return 0;
 }
 
-
 static struct of_device_id mesh_match[] = 
 {
 	{
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 13668ffdb1e7..d4640479c338 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -1507,12 +1507,12 @@ static int pmz_attach(struct macio_dev *mdev, const struct of_device_id *match)
  * That one should not be called, macio isn't really a hotswap device,
  * we don't expect one of those serial ports to go away...
  */
-static int pmz_detach(struct macio_dev *mdev)
+static void pmz_detach(struct macio_dev *mdev)
 {
 	struct uart_pmac_port	*uap = dev_get_drvdata(&mdev->ofdev.dev);
 	
 	if (!uap)
-		return -ENODEV;
+		return;
 
 	uart_remove_one_port(&pmz_uart_reg, &uap->port);
 
@@ -1523,11 +1523,8 @@ static int pmz_detach(struct macio_dev *mdev)
 	dev_set_drvdata(&mdev->ofdev.dev, NULL);
 	uap->dev = NULL;
 	uap->port.dev = NULL;
-	
-	return 0;
 }
 
-
 static int pmz_suspend(struct macio_dev *mdev, pm_message_t pm_state)
 {
 	struct uart_pmac_port *uap = dev_get_drvdata(&mdev->ofdev.dev);
diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c
index 51ed2f34b276..35f39727994d 100644
--- a/sound/aoa/soundbus/i2sbus/core.c
+++ b/sound/aoa/soundbus/i2sbus/core.c
@@ -364,15 +364,13 @@ static int i2sbus_probe(struct macio_dev* dev, const struct of_device_id *match)
 	return 0;
 }
 
-static int i2sbus_remove(struct macio_dev* dev)
+static void i2sbus_remove(struct macio_dev *dev)
 {
 	struct i2sbus_control *control = dev_get_drvdata(&dev->ofdev.dev);
 	struct i2sbus_dev *i2sdev, *tmp;
 
 	list_for_each_entry_safe(i2sdev, tmp, &control->list, item)
 		soundbus_remove_one(&i2sdev->sound);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM
-- 
2.25.1

Re: [PATCH v3] powerpc: macio: Make remove callback of macio driver void returned

[Damien Le Moal]

On 2/1/23 23:36, Dawei Li wrote:
> Commit fc7a6209d571 ("bus: Make remove callback return void") forces
> bus_type::remove be void-returned, it doesn't make much sense for any
> bus based driver implementing remove callbalk to return non-void to
> its caller.
> 
> This change is for macio bus based drivers.
> 
> Signed-off-by: Dawei Li <set_pte_at@outlook.com>
> ---
> v2 -> v3
> - Rebased on latest powerpc/next.
> - cc' to relevant subsysem lists.
> 
> v1 -> v2
> - Revert unneeded changes.
> - Rebased on latest powerpc/next.
> 
> v1
> - https://lore.kernel.org/all/TYCP286MB2323FCDC7ECD87F8D97CB74BCA189@TYCP286MB2323.JPNP286.PROD.OUTLOOK.COM/
> ---
>  arch/powerpc/include/asm/macio.h                | 2 +-
>  drivers/ata/pata_macio.c                        | 4 +---
>  drivers/macintosh/rack-meter.c                  | 4 +---
>  drivers/net/ethernet/apple/bmac.c               | 4 +---
>  drivers/net/ethernet/apple/mace.c               | 4 +---
>  drivers/net/wireless/intersil/orinoco/airport.c | 4 +---
>  drivers/scsi/mac53c94.c                         | 5 +----
>  drivers/scsi/mesh.c                             | 5 +----
>  drivers/tty/serial/pmac_zilog.c                 | 7 ++-----
>  sound/aoa/soundbus/i2sbus/core.c                | 4 +---
>  10 files changed, 11 insertions(+), 32 deletions(-)

For the ata bits:

Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

-- 
Damien Le Moal
Western Digital Research

Re: [PATCH v3] powerpc: macio: Make remove callback of macio driver void returned

[Jakub Kicinski]

On Wed,  1 Feb 2023 22:36:19 +0800 Dawei Li wrote:
> Commit fc7a6209d571 ("bus: Make remove callback return void") forces
> bus_type::remove be void-returned, it doesn't make much sense for any
> bus based driver implementing remove callbalk to return non-void to
> its caller.
> 
> This change is for macio bus based drivers.
> 
> Signed-off-by: Dawei Li <set_pte_at@outlook.com>

Acked-by: Jakub Kicinski <kuba@kernel.org>

Re: [PATCH v3] powerpc: macio: Make remove callback of macio driver void returned

[Christophe Leroy]

Hi Michael,

ping ?

Le 01/02/2023 à 15:36, Dawei Li a écrit :
> Commit fc7a6209d571 ("bus: Make remove callback return void") forces
> bus_type::remove be void-returned, it doesn't make much sense for any
> bus based driver implementing remove callbalk to return non-void to
> its caller.
> 
> This change is for macio bus based drivers.
> 
> Signed-off-by: Dawei Li <set_pte_at@outlook.com>

This patch is Acked , any special reason for not applying it ?

Note that it now conflicts with commit 1535d5962d79 ("wifi: remove 
orphaned orinoco driver") but resolution is trivial, just drop the 
changes to that file.

Christophe

> ---
> v2 -> v3
> - Rebased on latest powerpc/next.
> - cc' to relevant subsysem lists.
> 
> v1 -> v2
> - Revert unneeded changes.
> - Rebased on latest powerpc/next.
> 
> v1
> - https://lore.kernel.org/all/TYCP286MB2323FCDC7ECD87F8D97CB74BCA189@TYCP286MB2323.JPNP286.PROD.OUTLOOK.COM/
> ---
>   arch/powerpc/include/asm/macio.h                | 2 +-
>   drivers/ata/pata_macio.c                        | 4 +---
>   drivers/macintosh/rack-meter.c                  | 4 +---
>   drivers/net/ethernet/apple/bmac.c               | 4 +---
>   drivers/net/ethernet/apple/mace.c               | 4 +---
>   drivers/net/wireless/intersil/orinoco/airport.c | 4 +---
>   drivers/scsi/mac53c94.c                         | 5 +----
>   drivers/scsi/mesh.c                             | 5 +----
>   drivers/tty/serial/pmac_zilog.c                 | 7 ++-----
>   sound/aoa/soundbus/i2sbus/core.c                | 4 +---
>   10 files changed, 11 insertions(+), 32 deletions(-)
> 
> diff --git a/arch/powerpc/include/asm/macio.h b/arch/powerpc/include/asm/macio.h
> index ff5fd82d9ff0..cb9c386dacf8 100644
> --- a/arch/powerpc/include/asm/macio.h
> +++ b/arch/powerpc/include/asm/macio.h
> @@ -125,7 +125,7 @@ static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev)
>   struct macio_driver
>   {
>   	int	(*probe)(struct macio_dev* dev, const struct of_device_id *match);
> -	int	(*remove)(struct macio_dev* dev);
> +	void	(*remove)(struct macio_dev *dev);
>   
>   	int	(*suspend)(struct macio_dev* dev, pm_message_t state);
>   	int	(*resume)(struct macio_dev* dev);
> diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
> index 9ccaac9e2bc3..653106716a4b 100644
> --- a/drivers/ata/pata_macio.c
> +++ b/drivers/ata/pata_macio.c
> @@ -1187,7 +1187,7 @@ static int pata_macio_attach(struct macio_dev *mdev,
>   	return rc;
>   }
>   
> -static int pata_macio_detach(struct macio_dev *mdev)
> +static void pata_macio_detach(struct macio_dev *mdev)
>   {
>   	struct ata_host *host = macio_get_drvdata(mdev);
>   	struct pata_macio_priv *priv = host->private_data;
> @@ -1202,8 +1202,6 @@ static int pata_macio_detach(struct macio_dev *mdev)
>   	ata_host_detach(host);
>   
>   	unlock_media_bay(priv->mdev->media_bay);
> -
> -	return 0;
>   }
>   
>   #ifdef CONFIG_PM_SLEEP
> diff --git a/drivers/macintosh/rack-meter.c b/drivers/macintosh/rack-meter.c
> index c28893e41a8b..f2f83c4f3af5 100644
> --- a/drivers/macintosh/rack-meter.c
> +++ b/drivers/macintosh/rack-meter.c
> @@ -523,7 +523,7 @@ static int rackmeter_probe(struct macio_dev* mdev,
>   	return rc;
>   }
>   
> -static int rackmeter_remove(struct macio_dev* mdev)
> +static void rackmeter_remove(struct macio_dev *mdev)
>   {
>   	struct rackmeter *rm = dev_get_drvdata(&mdev->ofdev.dev);
>   
> @@ -558,8 +558,6 @@ static int rackmeter_remove(struct macio_dev* mdev)
>   
>   	/* Get rid of me */
>   	kfree(rm);
> -
> -	return 0;
>   }
>   
>   static int rackmeter_shutdown(struct macio_dev* mdev)
> diff --git a/drivers/net/ethernet/apple/bmac.c b/drivers/net/ethernet/apple/bmac.c
> index 9e653e2925f7..292b1f9cd9e7 100644
> --- a/drivers/net/ethernet/apple/bmac.c
> +++ b/drivers/net/ethernet/apple/bmac.c
> @@ -1591,7 +1591,7 @@ bmac_proc_info(char *buffer, char **start, off_t offset, int length)
>   }
>   #endif
>   
> -static int bmac_remove(struct macio_dev *mdev)
> +static void bmac_remove(struct macio_dev *mdev)
>   {
>   	struct net_device *dev = macio_get_drvdata(mdev);
>   	struct bmac_data *bp = netdev_priv(dev);
> @@ -1609,8 +1609,6 @@ static int bmac_remove(struct macio_dev *mdev)
>   	macio_release_resources(mdev);
>   
>   	free_netdev(dev);
> -
> -	return 0;
>   }
>   
>   static const struct of_device_id bmac_match[] =
> diff --git a/drivers/net/ethernet/apple/mace.c b/drivers/net/ethernet/apple/mace.c
> index fd1b008b7208..e6350971c707 100644
> --- a/drivers/net/ethernet/apple/mace.c
> +++ b/drivers/net/ethernet/apple/mace.c
> @@ -272,7 +272,7 @@ static int mace_probe(struct macio_dev *mdev, const struct of_device_id *match)
>   	return rc;
>   }
>   
> -static int mace_remove(struct macio_dev *mdev)
> +static void mace_remove(struct macio_dev *mdev)
>   {
>   	struct net_device *dev = macio_get_drvdata(mdev);
>   	struct mace_data *mp;
> @@ -296,8 +296,6 @@ static int mace_remove(struct macio_dev *mdev)
>   	free_netdev(dev);
>   
>   	macio_release_resources(mdev);
> -
> -	return 0;
>   }
>   
>   static void dbdma_reset(volatile struct dbdma_regs __iomem *dma)
> diff --git a/drivers/net/wireless/intersil/orinoco/airport.c b/drivers/net/wireless/intersil/orinoco/airport.c
> index a890bfa0d5cc..276a06cdd1f5 100644
> --- a/drivers/net/wireless/intersil/orinoco/airport.c
> +++ b/drivers/net/wireless/intersil/orinoco/airport.c
> @@ -85,7 +85,7 @@ airport_resume(struct macio_dev *mdev)
>   	return err;
>   }
>   
> -static int
> +static void
>   airport_detach(struct macio_dev *mdev)
>   {
>   	struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
> @@ -111,8 +111,6 @@ airport_detach(struct macio_dev *mdev)
>   
>   	macio_set_drvdata(mdev, NULL);
>   	free_orinocodev(priv);
> -
> -	return 0;
>   }
>   
>   static int airport_hard_reset(struct orinoco_private *priv)
> diff --git a/drivers/scsi/mac53c94.c b/drivers/scsi/mac53c94.c
> index f75928f7773e..42648ca9b8ed 100644
> --- a/drivers/scsi/mac53c94.c
> +++ b/drivers/scsi/mac53c94.c
> @@ -508,7 +508,7 @@ static int mac53c94_probe(struct macio_dev *mdev, const struct of_device_id *mat
>   	return rc;
>   }
>   
> -static int mac53c94_remove(struct macio_dev *mdev)
> +static void mac53c94_remove(struct macio_dev *mdev)
>   {
>   	struct fsc_state *fp = (struct fsc_state *)macio_get_drvdata(mdev);
>   	struct Scsi_Host *host = fp->host;
> @@ -526,11 +526,8 @@ static int mac53c94_remove(struct macio_dev *mdev)
>   	scsi_host_put(host);
>   
>   	macio_release_resources(mdev);
> -
> -	return 0;
>   }
>   
> -
>   static struct of_device_id mac53c94_match[] =
>   {
>   	{
> diff --git a/drivers/scsi/mesh.c b/drivers/scsi/mesh.c
> index 84b541a57b7b..cd2575b88c85 100644
> --- a/drivers/scsi/mesh.c
> +++ b/drivers/scsi/mesh.c
> @@ -1986,7 +1986,7 @@ static int mesh_probe(struct macio_dev *mdev, const struct of_device_id *match)
>   	return -ENODEV;
>   }
>   
> -static int mesh_remove(struct macio_dev *mdev)
> +static void mesh_remove(struct macio_dev *mdev)
>   {
>   	struct mesh_state *ms = (struct mesh_state *)macio_get_drvdata(mdev);
>   	struct Scsi_Host *mesh_host = ms->host;
> @@ -2013,11 +2013,8 @@ static int mesh_remove(struct macio_dev *mdev)
>   	macio_release_resources(mdev);
>   
>   	scsi_host_put(mesh_host);
> -
> -	return 0;
>   }
>   
> -
>   static struct of_device_id mesh_match[] =
>   {
>   	{
> diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
> index 13668ffdb1e7..d4640479c338 100644
> --- a/drivers/tty/serial/pmac_zilog.c
> +++ b/drivers/tty/serial/pmac_zilog.c
> @@ -1507,12 +1507,12 @@ static int pmz_attach(struct macio_dev *mdev, const struct of_device_id *match)
>    * That one should not be called, macio isn't really a hotswap device,
>    * we don't expect one of those serial ports to go away...
>    */
> -static int pmz_detach(struct macio_dev *mdev)
> +static void pmz_detach(struct macio_dev *mdev)
>   {
>   	struct uart_pmac_port	*uap = dev_get_drvdata(&mdev->ofdev.dev);
>   	
>   	if (!uap)
> -		return -ENODEV;
> +		return;
>   
>   	uart_remove_one_port(&pmz_uart_reg, &uap->port);
>   
> @@ -1523,11 +1523,8 @@ static int pmz_detach(struct macio_dev *mdev)
>   	dev_set_drvdata(&mdev->ofdev.dev, NULL);
>   	uap->dev = NULL;
>   	uap->port.dev = NULL;
> -	
> -	return 0;
>   }
>   
> -
>   static int pmz_suspend(struct macio_dev *mdev, pm_message_t pm_state)
>   {
>   	struct uart_pmac_port *uap = dev_get_drvdata(&mdev->ofdev.dev);
> diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c
> index 51ed2f34b276..35f39727994d 100644
> --- a/sound/aoa/soundbus/i2sbus/core.c
> +++ b/sound/aoa/soundbus/i2sbus/core.c
> @@ -364,15 +364,13 @@ static int i2sbus_probe(struct macio_dev* dev, const struct of_device_id *match)
>   	return 0;
>   }
>   
> -static int i2sbus_remove(struct macio_dev* dev)
> +static void i2sbus_remove(struct macio_dev *dev)
>   {
>   	struct i2sbus_control *control = dev_get_drvdata(&dev->ofdev.dev);
>   	struct i2sbus_dev *i2sdev, *tmp;
>   
>   	list_for_each_entry_safe(i2sdev, tmp, &control->list, item)
>   		soundbus_remove_one(&i2sdev->sound);
> -
> -	return 0;
>   }
>   
>   #ifdef CONFIG_PM

Re: [PATCH v3] powerpc: macio: Make remove callback of macio driver void returned

[Dawei Li]

Hi Christophe,

On Tue, Feb 20, 2024 at 04:12:17PM +0000, Christophe Leroy wrote:
> Hi Michael,
> 
> ping ?
> 
> Le 01/02/2023 à 15:36, Dawei Li a écrit :
> > Commit fc7a6209d571 ("bus: Make remove callback return void") forces
> > bus_type::remove be void-returned, it doesn't make much sense for any
> > bus based driver implementing remove callbalk to return non-void to
> > its caller.
> > 
> > This change is for macio bus based drivers.
> > 
> > Signed-off-by: Dawei Li <set_pte_at@outlook.com>
> 
> This patch is Acked , any special reason for not applying it ?
> 
> Note that it now conflicts with commit 1535d5962d79 ("wifi: remove 
> orphaned orinoco driver") but resolution is trivial, just drop the 
> changes to that file.

Thanks for picking it up, hardly believe that it's been one year.

Michael,

I will respin V4 if it's needed.

Thanks,

   Dawei

> 
> Christophe
> 
> > ---
> > v2 -> v3
> > - Rebased on latest powerpc/next.
> > - cc' to relevant subsysem lists.
> > 
> > v1 -> v2
> > - Revert unneeded changes.
> > - Rebased on latest powerpc/next.
> > 
> > v1
> > - https://lore.kernel.org/all/TYCP286MB2323FCDC7ECD87F8D97CB74BCA189@TYCP286MB2323.JPNP286.PROD.OUTLOOK.COM/
> > ---
> >   arch/powerpc/include/asm/macio.h                | 2 +-
> >   drivers/ata/pata_macio.c                        | 4 +---
> >   drivers/macintosh/rack-meter.c                  | 4 +---
> >   drivers/net/ethernet/apple/bmac.c               | 4 +---
> >   drivers/net/ethernet/apple/mace.c               | 4 +---
> >   drivers/net/wireless/intersil/orinoco/airport.c | 4 +---
> >   drivers/scsi/mac53c94.c                         | 5 +----
> >   drivers/scsi/mesh.c                             | 5 +----
> >   drivers/tty/serial/pmac_zilog.c                 | 7 ++-----
> >   sound/aoa/soundbus/i2sbus/core.c                | 4 +---
> >   10 files changed, 11 insertions(+), 32 deletions(-)
> > 
> > diff --git a/arch/powerpc/include/asm/macio.h b/arch/powerpc/include/asm/macio.h
> > index ff5fd82d9ff0..cb9c386dacf8 100644
> > --- a/arch/powerpc/include/asm/macio.h
> > +++ b/arch/powerpc/include/asm/macio.h
> > @@ -125,7 +125,7 @@ static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev)
> >   struct macio_driver
> >   {
> >   	int	(*probe)(struct macio_dev* dev, const struct of_device_id *match);
> > -	int	(*remove)(struct macio_dev* dev);
> > +	void	(*remove)(struct macio_dev *dev);
> >   
> >   	int	(*suspend)(struct macio_dev* dev, pm_message_t state);
> >   	int	(*resume)(struct macio_dev* dev);
> > diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
> > index 9ccaac9e2bc3..653106716a4b 100644
> > --- a/drivers/ata/pata_macio.c
> > +++ b/drivers/ata/pata_macio.c
> > @@ -1187,7 +1187,7 @@ static int pata_macio_attach(struct macio_dev *mdev,
> >   	return rc;
> >   }
> >   
> > -static int pata_macio_detach(struct macio_dev *mdev)
> > +static void pata_macio_detach(struct macio_dev *mdev)
> >   {
> >   	struct ata_host *host = macio_get_drvdata(mdev);
> >   	struct pata_macio_priv *priv = host->private_data;
> > @@ -1202,8 +1202,6 @@ static int pata_macio_detach(struct macio_dev *mdev)
> >   	ata_host_detach(host);
> >   
> >   	unlock_media_bay(priv->mdev->media_bay);
> > -
> > -	return 0;
> >   }
> >   
> >   #ifdef CONFIG_PM_SLEEP
> > diff --git a/drivers/macintosh/rack-meter.c b/drivers/macintosh/rack-meter.c
> > index c28893e41a8b..f2f83c4f3af5 100644
> > --- a/drivers/macintosh/rack-meter.c
> > +++ b/drivers/macintosh/rack-meter.c
> > @@ -523,7 +523,7 @@ static int rackmeter_probe(struct macio_dev* mdev,
> >   	return rc;
> >   }
> >   
> > -static int rackmeter_remove(struct macio_dev* mdev)
> > +static void rackmeter_remove(struct macio_dev *mdev)
> >   {
> >   	struct rackmeter *rm = dev_get_drvdata(&mdev->ofdev.dev);
> >   
> > @@ -558,8 +558,6 @@ static int rackmeter_remove(struct macio_dev* mdev)
> >   
> >   	/* Get rid of me */
> >   	kfree(rm);
> > -
> > -	return 0;
> >   }
> >   
> >   static int rackmeter_shutdown(struct macio_dev* mdev)
> > diff --git a/drivers/net/ethernet/apple/bmac.c b/drivers/net/ethernet/apple/bmac.c
> > index 9e653e2925f7..292b1f9cd9e7 100644
> > --- a/drivers/net/ethernet/apple/bmac.c
> > +++ b/drivers/net/ethernet/apple/bmac.c
> > @@ -1591,7 +1591,7 @@ bmac_proc_info(char *buffer, char **start, off_t offset, int length)
> >   }
> >   #endif
> >   
> > -static int bmac_remove(struct macio_dev *mdev)
> > +static void bmac_remove(struct macio_dev *mdev)
> >   {
> >   	struct net_device *dev = macio_get_drvdata(mdev);
> >   	struct bmac_data *bp = netdev_priv(dev);
> > @@ -1609,8 +1609,6 @@ static int bmac_remove(struct macio_dev *mdev)
> >   	macio_release_resources(mdev);
> >   
> >   	free_netdev(dev);
> > -
> > -	return 0;
> >   }
> >   
> >   static const struct of_device_id bmac_match[] =
> > diff --git a/drivers/net/ethernet/apple/mace.c b/drivers/net/ethernet/apple/mace.c
> > index fd1b008b7208..e6350971c707 100644
> > --- a/drivers/net/ethernet/apple/mace.c
> > +++ b/drivers/net/ethernet/apple/mace.c
> > @@ -272,7 +272,7 @@ static int mace_probe(struct macio_dev *mdev, const struct of_device_id *match)
> >   	return rc;
> >   }
> >   
> > -static int mace_remove(struct macio_dev *mdev)
> > +static void mace_remove(struct macio_dev *mdev)
> >   {
> >   	struct net_device *dev = macio_get_drvdata(mdev);
> >   	struct mace_data *mp;
> > @@ -296,8 +296,6 @@ static int mace_remove(struct macio_dev *mdev)
> >   	free_netdev(dev);
> >   
> >   	macio_release_resources(mdev);
> > -
> > -	return 0;
> >   }
> >   
> >   static void dbdma_reset(volatile struct dbdma_regs __iomem *dma)
> > diff --git a/drivers/net/wireless/intersil/orinoco/airport.c b/drivers/net/wireless/intersil/orinoco/airport.c
> > index a890bfa0d5cc..276a06cdd1f5 100644
> > --- a/drivers/net/wireless/intersil/orinoco/airport.c
> > +++ b/drivers/net/wireless/intersil/orinoco/airport.c
> > @@ -85,7 +85,7 @@ airport_resume(struct macio_dev *mdev)
> >   	return err;
> >   }
> >   
> > -static int
> > +static void
> >   airport_detach(struct macio_dev *mdev)
> >   {
> >   	struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
> > @@ -111,8 +111,6 @@ airport_detach(struct macio_dev *mdev)
> >   
> >   	macio_set_drvdata(mdev, NULL);
> >   	free_orinocodev(priv);
> > -
> > -	return 0;
> >   }
> >   
> >   static int airport_hard_reset(struct orinoco_private *priv)
> > diff --git a/drivers/scsi/mac53c94.c b/drivers/scsi/mac53c94.c
> > index f75928f7773e..42648ca9b8ed 100644
> > --- a/drivers/scsi/mac53c94.c
> > +++ b/drivers/scsi/mac53c94.c
> > @@ -508,7 +508,7 @@ static int mac53c94_probe(struct macio_dev *mdev, const struct of_device_id *mat
> >   	return rc;
> >   }
> >   
> > -static int mac53c94_remove(struct macio_dev *mdev)
> > +static void mac53c94_remove(struct macio_dev *mdev)
> >   {
> >   	struct fsc_state *fp = (struct fsc_state *)macio_get_drvdata(mdev);
> >   	struct Scsi_Host *host = fp->host;
> > @@ -526,11 +526,8 @@ static int mac53c94_remove(struct macio_dev *mdev)
> >   	scsi_host_put(host);
> >   
> >   	macio_release_resources(mdev);
> > -
> > -	return 0;
> >   }
> >   
> > -
> >   static struct of_device_id mac53c94_match[] =
> >   {
> >   	{
> > diff --git a/drivers/scsi/mesh.c b/drivers/scsi/mesh.c
> > index 84b541a57b7b..cd2575b88c85 100644
> > --- a/drivers/scsi/mesh.c
> > +++ b/drivers/scsi/mesh.c
> > @@ -1986,7 +1986,7 @@ static int mesh_probe(struct macio_dev *mdev, const struct of_device_id *match)
> >   	return -ENODEV;
> >   }
> >   
> > -static int mesh_remove(struct macio_dev *mdev)
> > +static void mesh_remove(struct macio_dev *mdev)
> >   {
> >   	struct mesh_state *ms = (struct mesh_state *)macio_get_drvdata(mdev);
> >   	struct Scsi_Host *mesh_host = ms->host;
> > @@ -2013,11 +2013,8 @@ static int mesh_remove(struct macio_dev *mdev)
> >   	macio_release_resources(mdev);
> >   
> >   	scsi_host_put(mesh_host);
> > -
> > -	return 0;
> >   }
> >   
> > -
> >   static struct of_device_id mesh_match[] =
> >   {
> >   	{
> > diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
> > index 13668ffdb1e7..d4640479c338 100644
> > --- a/drivers/tty/serial/pmac_zilog.c
> > +++ b/drivers/tty/serial/pmac_zilog.c
> > @@ -1507,12 +1507,12 @@ static int pmz_attach(struct macio_dev *mdev, const struct of_device_id *match)
> >    * That one should not be called, macio isn't really a hotswap device,
> >    * we don't expect one of those serial ports to go away...
> >    */
> > -static int pmz_detach(struct macio_dev *mdev)
> > +static void pmz_detach(struct macio_dev *mdev)
> >   {
> >   	struct uart_pmac_port	*uap = dev_get_drvdata(&mdev->ofdev.dev);
> >   	
> >   	if (!uap)
> > -		return -ENODEV;
> > +		return;
> >   
> >   	uart_remove_one_port(&pmz_uart_reg, &uap->port);
> >   
> > @@ -1523,11 +1523,8 @@ static int pmz_detach(struct macio_dev *mdev)
> >   	dev_set_drvdata(&mdev->ofdev.dev, NULL);
> >   	uap->dev = NULL;
> >   	uap->port.dev = NULL;
> > -	
> > -	return 0;
> >   }
> >   
> > -
> >   static int pmz_suspend(struct macio_dev *mdev, pm_message_t pm_state)
> >   {
> >   	struct uart_pmac_port *uap = dev_get_drvdata(&mdev->ofdev.dev);
> > diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c
> > index 51ed2f34b276..35f39727994d 100644
> > --- a/sound/aoa/soundbus/i2sbus/core.c
> > +++ b/sound/aoa/soundbus/i2sbus/core.c
> > @@ -364,15 +364,13 @@ static int i2sbus_probe(struct macio_dev* dev, const struct of_device_id *match)
> >   	return 0;
> >   }
> >   
> > -static int i2sbus_remove(struct macio_dev* dev)
> > +static void i2sbus_remove(struct macio_dev *dev)
> >   {
> >   	struct i2sbus_control *control = dev_get_drvdata(&dev->ofdev.dev);
> >   	struct i2sbus_dev *i2sdev, *tmp;
> >   
> >   	list_for_each_entry_safe(i2sdev, tmp, &control->list, item)
> >   		soundbus_remove_one(&i2sdev->sound);
> > -
> > -	return 0;
> >   }
> >   
> >   #ifdef CONFIG_PM

Re: [PATCH v3] powerpc: macio: Make remove callback of macio driver void returned

[Michael Ellerman]

Dawei Li <set_pte_at@outlook.com> writes:
> Hi Christophe,
>
> On Tue, Feb 20, 2024 at 04:12:17PM +0000, Christophe Leroy wrote:
>> Hi Michael,
>> 
>> ping ?
>> 
>> Le 01/02/2023 à 15:36, Dawei Li a écrit :
>> > Commit fc7a6209d571 ("bus: Make remove callback return void") forces
>> > bus_type::remove be void-returned, it doesn't make much sense for any
>> > bus based driver implementing remove callbalk to return non-void to
>> > its caller.
>> > 
>> > This change is for macio bus based drivers.
>> > 
>> > Signed-off-by: Dawei Li <set_pte_at@outlook.com>
>> 
>> This patch is Acked , any special reason for not applying it ?
>> 
>> Note that it now conflicts with commit 1535d5962d79 ("wifi: remove 
>> orphaned orinoco driver") but resolution is trivial, just drop the 
>> changes to that file.
>
> Thanks for picking it up, hardly believe that it's been one year.
>
> Michael,
>
> I will respin V4 if it's needed.

No that's fine, I'll sort it out.

cheers

Re: [PATCH v3] powerpc: macio: Make remove callback of macio driver void returned

[Michael Ellerman]

On Wed, 01 Feb 2023 22:36:19 +0800, Dawei Li wrote:
> Commit fc7a6209d571 ("bus: Make remove callback return void") forces
> bus_type::remove be void-returned, it doesn't make much sense for any
> bus based driver implementing remove callbalk to return non-void to
> its caller.
> 
> This change is for macio bus based drivers.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc: macio: Make remove callback of macio driver void returned
      https://git.kernel.org/powerpc/c/9db2235326c4b868b6e065dfa3a69011ee570848

cheers