isa: Make the remove callback for isa drivers return void

The driver core ignores the return value of the remove callback, so
don't give isa drivers the chance to provide a value.

Adapt all isa_drivers with a remove callbacks accordingly; they all
return 0 unconditionally anyhow.

Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for drivers/net/can/sja1000/tscan1.c
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Acked-by: Wolfram Sang <wsa@kernel.org> # for drivers/i2c/
Reviewed-by: Takashi Iway <tiwai@suse.de> # for sound/
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for drivers/media/
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Link: https://lore.kernel.org/r/20210122092449.426097-4-uwe@kleine-koenig.orgSigned-off-by: Takashi Iwai <tiwai@suse.de>

drivers/base/isa.c

@@ -51,7 +51,7 @@ static int isa_bus_remove(struct device *dev)
 	struct isa_driver *isa_driver = dev->platform_data;
 
 	if (isa_driver && isa_driver->remove)
-		return isa_driver->remove(dev, to_isa_dev(dev)->id);
+		isa_driver->remove(dev, to_isa_dev(dev)->id);
 
 	return 0;
 }

drivers/i2c/busses/i2c-elektor.c

@@ -282,7 +282,7 @@ static int elektor_probe(struct device *dev, unsigned int id)
 	return -ENODEV;
 }
 
-static int elektor_remove(struct device *dev, unsigned int id)
+static void elektor_remove(struct device *dev, unsigned int id)
 {
 	i2c_del_adapter(&pcf_isa_ops);
 
@@ -298,8 +298,6 @@ static int elektor_remove(struct device *dev, unsigned int id)
 		iounmap(base_iomem);
 		release_mem_region(base, 2);
 	}
-
-	return 0;
 }
 
 static struct isa_driver i2c_elektor_driver = {

drivers/i2c/busses/i2c-pca-isa.c

@@ -161,7 +161,7 @@ static int pca_isa_probe(struct device *dev, unsigned int id)
 	return -ENODEV;
 }
 
-static int pca_isa_remove(struct device *dev, unsigned int id)
+static void pca_isa_remove(struct device *dev, unsigned int id)
 {
 	i2c_del_adapter(&pca_isa_ops);
 
@@ -170,8 +170,6 @@ static int pca_isa_remove(struct device *dev, unsigned int id)
 		free_irq(irq, &pca_isa_ops);
 	}
 	release_region(base, IO_SIZE);
-
-	return 0;
 }
 
 static struct isa_driver pca_isa_driver = {

drivers/input/touchscreen/htcpen.c

@@ -171,7 +171,7 @@ static int htcpen_isa_probe(struct device *dev, unsigned int id)
 	return err;
 }
 
-static int htcpen_isa_remove(struct device *dev, unsigned int id)
+static void htcpen_isa_remove(struct device *dev, unsigned int id)
 {
 	struct input_dev *htcpen_dev = dev_get_drvdata(dev);
 
@@ -182,8 +182,6 @@ static int htcpen_isa_remove(struct device *dev, unsigned int id)
 	release_region(HTCPEN_PORT_INDEX, 2);
 	release_region(HTCPEN_PORT_INIT, 1);
 	release_region(HTCPEN_PORT_IRQ_CLEAR, 1);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM

drivers/media/radio/radio-isa.c

@@ -337,13 +337,11 @@ int radio_isa_probe(struct device *pdev, unsigned int dev)
 }
 EXPORT_SYMBOL_GPL(radio_isa_probe);
 
-int radio_isa_remove(struct device *pdev, unsigned int dev)
+void radio_isa_remove(struct device *pdev, unsigned int dev)
 {
 	struct radio_isa_card *isa = dev_get_drvdata(pdev);
 
 	radio_isa_common_remove(isa, isa->drv->region_size);
-
-	return 0;
 }
 EXPORT_SYMBOL_GPL(radio_isa_remove);
 

drivers/media/radio/radio-isa.h

@@ -91,7 +91,7 @@ struct radio_isa_driver {
 
 int radio_isa_match(struct device *pdev, unsigned int dev);
 int radio_isa_probe(struct device *pdev, unsigned int dev);
-int radio_isa_remove(struct device *pdev, unsigned int dev);
+void radio_isa_remove(struct device *pdev, unsigned int dev);
 #ifdef CONFIG_PNP
 int radio_isa_pnp_probe(struct pnp_dev *dev,
 			const struct pnp_device_id *dev_id);

drivers/media/radio/radio-sf16fmr2.c

@@ -293,11 +293,9 @@ static void fmr2_remove(struct fmr2 *fmr2)
 	kfree(fmr2);
 }
 
-static int fmr2_isa_remove(struct device *pdev, unsigned int ndev)
+static void fmr2_isa_remove(struct device *pdev, unsigned int ndev)
 {
 	fmr2_remove(dev_get_drvdata(pdev));
-
-	return 0;
 }
 
 static void fmr2_pnp_remove(struct pnp_dev *pdev)

drivers/net/can/sja1000/tscan1.c

@@ -159,7 +159,7 @@ static int tscan1_probe(struct device *dev, unsigned id)
 	return -ENXIO;
 }
 
-static int tscan1_remove(struct device *dev, unsigned id /*unused*/)
+static void tscan1_remove(struct device *dev, unsigned id /*unused*/)
 {
 	struct net_device *netdev;
 	struct sja1000_priv *priv;
@@ -179,8 +179,6 @@ static int tscan1_remove(struct device *dev, unsigned id /*unused*/)
 	release_region(pld_base, TSCAN1_PLD_SIZE);
 
 	free_sja1000dev(netdev);
-
-	return 0;
 }
 
 static struct isa_driver tscan1_isa_driver = {

drivers/net/ethernet/3com/3c509.c

@@ -335,12 +335,11 @@ static int el3_isa_match(struct device *pdev, unsigned int ndev)
 	return 1;
 }
 
-static int el3_isa_remove(struct device *pdev,
+static void el3_isa_remove(struct device *pdev,
 				    unsigned int ndev)
 {
 	el3_device_remove(pdev);
 	dev_set_drvdata(pdev, NULL);
-	return 0;
 }
 
 #ifdef CONFIG_PM

drivers/scsi/advansys.c

@@ -11459,12 +11459,11 @@ static int advansys_isa_probe(struct device *dev, unsigned int id)
 	return err;
 }
 
-static int advansys_isa_remove(struct device *dev, unsigned int id)
+static void advansys_isa_remove(struct device *dev, unsigned int id)
 {
 	int ioport = _asc_def_iop_base[id];
 	advansys_release(dev_get_drvdata(dev));
 	release_region(ioport, ASC_IOADR_GAP);
-	return 0;
 }
 
 static struct isa_driver advansys_isa_driver = {

drivers/scsi/aha1542.c

@@ -1025,12 +1025,11 @@ static int aha1542_isa_match(struct device *pdev, unsigned int ndev)
 	return 1;
 }
 
-static int aha1542_isa_remove(struct device *pdev,
+static void aha1542_isa_remove(struct device *pdev,
 				    unsigned int ndev)
 {
 	aha1542_release(dev_get_drvdata(pdev));
 	dev_set_drvdata(pdev, NULL);
-	return 0;
 }
 
 static struct isa_driver aha1542_isa_driver = {

drivers/scsi/fdomain_isa.c

@@ -175,7 +175,7 @@ static int fdomain_isa_param_match(struct device *dev, unsigned int ndev)
 	return 1;
 }
 
-static int fdomain_isa_remove(struct device *dev, unsigned int ndev)
+static void fdomain_isa_remove(struct device *dev, unsigned int ndev)
 {
 	struct Scsi_Host *sh = dev_get_drvdata(dev);
 	int base = sh->io_port;
@@ -183,7 +183,6 @@ static int fdomain_isa_remove(struct device *dev, unsigned int ndev)
 	fdomain_destroy(sh);
 	release_region(base, FDOMAIN_REGION_SIZE);
 	dev_set_drvdata(dev, NULL);
-	return 0;
 }
 
 static struct isa_driver fdomain_isa_driver = {

drivers/scsi/g_NCR5380.c

@@ -720,12 +720,11 @@ static int generic_NCR5380_isa_match(struct device *pdev, unsigned int ndev)
 	return 1;
 }
 
-static int generic_NCR5380_isa_remove(struct device *pdev,
-                                      unsigned int ndev)
+static void generic_NCR5380_isa_remove(struct device *pdev,
+				       unsigned int ndev)
 {
 	generic_NCR5380_release_resources(dev_get_drvdata(pdev));
 	dev_set_drvdata(pdev, NULL);
-	return 0;
 }
 
 static struct isa_driver generic_NCR5380_isa_driver = {

drivers/watchdog/pcwd.c

@@ -951,7 +951,7 @@ static int pcwd_isa_probe(struct device *dev, unsigned int id)
 	return ret;
 }
 
-static int pcwd_isa_remove(struct device *dev, unsigned int id)
+static void pcwd_isa_remove(struct device *dev, unsigned int id)
 {
 	if (debug >= DEBUG)
 		pr_debug("pcwd_isa_remove id=%d\n", id);
@@ -968,8 +968,6 @@ static int pcwd_isa_remove(struct device *dev, unsigned int id)
 			(pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
 	pcwd_private.io_addr = 0x0000;
 	cards_found--;
-
-	return 0;
 }
 
 static void pcwd_isa_shutdown(struct device *dev, unsigned int id)

include/linux/isa.h

@@ -13,7 +13,7 @@
 struct isa_driver {
 	int (*match)(struct device *, unsigned int);
 	int (*probe)(struct device *, unsigned int);
-	int (*remove)(struct device *, unsigned int);
+	void (*remove)(struct device *, unsigned int);
 	void (*shutdown)(struct device *, unsigned int);
 	int (*suspend)(struct device *, unsigned int, pm_message_t);
 	int (*resume)(struct device *, unsigned int);

sound/isa/ad1848/ad1848.c

@@ -118,10 +118,9 @@ out:	snd_card_free(card);
 	return error;
 }
 
-static int snd_ad1848_remove(struct device *dev, unsigned int n)
+static void snd_ad1848_remove(struct device *dev, unsigned int n)
 {
 	snd_card_free(dev_get_drvdata(dev));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/adlib.c

@@ -97,10 +97,9 @@ out:	snd_card_free(card);
 	return error;
 }
 
-static int snd_adlib_remove(struct device *dev, unsigned int n)
+static void snd_adlib_remove(struct device *dev, unsigned int n)
 {
 	snd_card_free(dev_get_drvdata(dev));
-	return 0;
 }
 
 static struct isa_driver snd_adlib_driver = {

sound/isa/cmi8328.c

@@ -403,7 +403,7 @@ static int snd_cmi8328_probe(struct device *pdev, unsigned int ndev)
 	return err;
 }
 
-static int snd_cmi8328_remove(struct device *pdev, unsigned int dev)
+static void snd_cmi8328_remove(struct device *pdev, unsigned int dev)
 {
 	struct snd_card *card = dev_get_drvdata(pdev);
 	struct snd_cmi8328 *cmi = card->private_data;
@@ -420,7 +420,6 @@ static int snd_cmi8328_remove(struct device *pdev, unsigned int dev)
 	snd_cmi8328_cfg_write(cmi->port, CFG2, 0);
 	snd_cmi8328_cfg_write(cmi->port, CFG3, 0);
 	snd_card_free(card);
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/cmi8330.c

@@ -631,11 +631,10 @@ static int snd_cmi8330_isa_probe(struct device *pdev,
 	return 0;
 }
 
-static int snd_cmi8330_isa_remove(struct device *devptr,
+static void snd_cmi8330_isa_remove(struct device *devptr,
 				  unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/cs423x/cs4231.c

@@ -135,10 +135,9 @@ out:	snd_card_free(card);
 	return error;
 }
 
-static int snd_cs4231_remove(struct device *dev, unsigned int n)
+static void snd_cs4231_remove(struct device *dev, unsigned int n)
 {
 	snd_card_free(dev_get_drvdata(dev));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/cs423x/cs4236.c

@@ -487,11 +487,10 @@ static int snd_cs423x_isa_probe(struct device *pdev,
 	return 0;
 }
 
-static int snd_cs423x_isa_remove(struct device *pdev,
+static void snd_cs423x_isa_remove(struct device *pdev,
 				 unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(pdev));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/es1688/es1688.c

@@ -192,10 +192,9 @@ static int snd_es1688_isa_probe(struct device *dev, unsigned int n)
 	return error;
 }
 
-static int snd_es1688_isa_remove(struct device *dev, unsigned int n)
+static void snd_es1688_isa_remove(struct device *dev, unsigned int n)
 {
 	snd_card_free(dev_get_drvdata(dev));
-	return 0;
 }
 
 static struct isa_driver snd_es1688_driver = {

sound/isa/es18xx.c

@@ -2210,11 +2210,10 @@ static int snd_es18xx_isa_probe(struct device *pdev, unsigned int dev)
 	}
 }
 
-static int snd_es18xx_isa_remove(struct device *devptr,
-				 unsigned int dev)
+static void snd_es18xx_isa_remove(struct device *devptr,
+				  unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/galaxy/galaxy.c

@@ -608,10 +608,9 @@ static int snd_galaxy_probe(struct device *dev, unsigned int n)
 	return err;
 }
 
-static int snd_galaxy_remove(struct device *dev, unsigned int n)
+static void snd_galaxy_remove(struct device *dev, unsigned int n)
 {
 	snd_card_free(dev_get_drvdata(dev));
-	return 0;
 }
 
 static struct isa_driver snd_galaxy_driver = {

sound/isa/gus/gusclassic.c

@@ -195,10 +195,9 @@ out:	snd_card_free(card);
 	return error;
 }
 
-static int snd_gusclassic_remove(struct device *dev, unsigned int n)
+static void snd_gusclassic_remove(struct device *dev, unsigned int n)
 {
 	snd_card_free(dev_get_drvdata(dev));
-	return 0;
 }
 
 static struct isa_driver snd_gusclassic_driver = {

sound/isa/gus/gusextreme.c

@@ -324,10 +324,9 @@ out:	snd_card_free(card);
 	return error;
 }
 
-static int snd_gusextreme_remove(struct device *dev, unsigned int n)
+static void snd_gusextreme_remove(struct device *dev, unsigned int n)
 {
 	snd_card_free(dev_get_drvdata(dev));
-	return 0;
 }
 
 static struct isa_driver snd_gusextreme_driver = {

sound/isa/gus/gusmax.c

@@ -338,10 +338,9 @@ static int snd_gusmax_probe(struct device *pdev, unsigned int dev)
 	return err;
 }
 
-static int snd_gusmax_remove(struct device *devptr, unsigned int dev)
+static void snd_gusmax_remove(struct device *devptr, unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 #define DEV_NAME "gusmax"

sound/isa/gus/interwave.c

@@ -825,10 +825,9 @@ static int snd_interwave_isa_probe(struct device *pdev,
 	}
 }
 
-static int snd_interwave_isa_remove(struct device *devptr, unsigned int dev)
+static void snd_interwave_isa_remove(struct device *devptr, unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 static struct isa_driver snd_interwave_driver = {

sound/isa/msnd/msnd_pinnacle.c

@@ -1049,10 +1049,9 @@ static int snd_msnd_isa_probe(struct device *pdev, unsigned int idx)
 #endif
 }
 
-static int snd_msnd_isa_remove(struct device *pdev, unsigned int dev)
+static void snd_msnd_isa_remove(struct device *pdev, unsigned int dev)
 {
 	snd_msnd_unload(dev_get_drvdata(pdev));
-	return 0;
 }
 
 static struct isa_driver snd_msnd_driver = {

sound/isa/opl3sa2.c

@@ -878,11 +878,10 @@ static int snd_opl3sa2_isa_probe(struct device *pdev,
 	return 0;
 }
 
-static int snd_opl3sa2_isa_remove(struct device *devptr,
+static void snd_opl3sa2_isa_remove(struct device *devptr,
 				  unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/opti9xx/miro.c

@@ -1480,11 +1480,10 @@ static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
 	return 0;
 }
 
-static int snd_miro_isa_remove(struct device *devptr,
+static void snd_miro_isa_remove(struct device *devptr,
 			       unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 #define DEV_NAME "miro"

sound/isa/opti9xx/opti92x-ad1848.c

@@ -1024,11 +1024,10 @@ static int snd_opti9xx_isa_probe(struct device *devptr,
 	return 0;
 }
 
-static int snd_opti9xx_isa_remove(struct device *devptr,
-				  unsigned int dev)
+static void snd_opti9xx_isa_remove(struct device *devptr,
+				   unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/sb/jazz16.c

@@ -339,12 +339,11 @@ static int snd_jazz16_probe(struct device *devptr, unsigned int dev)
 	return err;
 }
 
-static int snd_jazz16_remove(struct device *devptr, unsigned int dev)
+static void snd_jazz16_remove(struct device *devptr, unsigned int dev)
 {
 	struct snd_card *card = dev_get_drvdata(devptr);
 
 	snd_card_free(card);
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/sb/sb16.c

@@ -547,10 +547,9 @@ static int snd_sb16_isa_probe(struct device *pdev, unsigned int dev)
 	}
 }
 
-static int snd_sb16_isa_remove(struct device *pdev, unsigned int dev)
+static void snd_sb16_isa_remove(struct device *pdev, unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(pdev));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/sb/sb8.c

@@ -192,10 +192,9 @@ static int snd_sb8_probe(struct device *pdev, unsigned int dev)
 	return err;
 }
 
-static int snd_sb8_remove(struct device *pdev, unsigned int dev)
+static void snd_sb8_remove(struct device *pdev, unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(pdev));
-	return 0;
 }
 
 #ifdef CONFIG_PM

sound/isa/sc6000.c

@@ -672,7 +672,7 @@ static int snd_sc6000_probe(struct device *devptr, unsigned int dev)
 	return err;
 }
 
-static int snd_sc6000_remove(struct device *devptr, unsigned int dev)
+static void snd_sc6000_remove(struct device *devptr, unsigned int dev)
 {
 	struct snd_card *card = dev_get_drvdata(devptr);
 	char __iomem **vport = card->private_data;
@@ -684,7 +684,6 @@ static int snd_sc6000_remove(struct device *devptr, unsigned int dev)
 	release_region(mss_port[dev], 4);
 
 	snd_card_free(card);
-	return 0;
 }
 
 static struct isa_driver snd_sc6000_driver = {

sound/isa/sscape.c

@@ -1183,10 +1183,9 @@ static int snd_sscape_probe(struct device *pdev, unsigned int dev)
 	return ret;
 }
 
-static int snd_sscape_remove(struct device *devptr, unsigned int dev)
+static void snd_sscape_remove(struct device *devptr, unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 #define DEV_NAME "sscape"

sound/isa/wavefront/wavefront.c

@@ -565,11 +565,10 @@ static int snd_wavefront_isa_probe(struct device *pdev,
 	return 0;
 }
 
-static int snd_wavefront_isa_remove(struct device *devptr,
+static void snd_wavefront_isa_remove(struct device *devptr,
 				    unsigned int dev)
 {
 	snd_card_free(dev_get_drvdata(devptr));
-	return 0;
 }
 
 #define DEV_NAME "wavefront"