Merge: [s390] Upgrade the QETH driver to latest from upstream

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/886

JIRA: https://issues.redhat.com/browse/RHEL-73487
CVE: CVE-2025-21856

Commits:
```
c3a04f7
6cccb3b
0d0b752
915e34d
```

Signed-off-by: Mete Durlu <[email protected]>

Approved-by: Steve Best <[email protected]>
Approved-by: Tony Camuso <[email protected]>
Approved-by: CKI KWF Bot <[email protected]>

Merged-by: CKI GitLab Kmaint Pipeline Bot <[email protected]>

Author: CKI KWF Bot

Documentation/arch/s390/driver-model.rst

@@ -244,7 +244,7 @@ information about the interrupt from the irb parameter.
 --------------------
 
 The ccwgroup mechanism is designed to handle devices consisting of multiple ccw
-devices, like lcs or ctc.
+devices, like qeth or ctc.
 
 The ccw driver provides a 'group' attribute. Piping bus ids of ccw devices to
 this attributes creates a ccwgroup device consisting of these ccw devices (if

arch/s390/include/asm/irq.h

@@ -54,7 +54,6 @@ enum interruption_class {
 	IRQIO_C70,
 	IRQIO_TAP,
 	IRQIO_VMR,
-	IRQIO_LCS,
 	IRQIO_CTC,
 	IRQIO_ADM,
 	IRQIO_CSC,

arch/s390/kernel/irq.c

@@ -84,7 +84,6 @@ static const struct irq_class irqclass_sub_desc[] = {
 	{.irq = IRQIO_C70,  .name = "C70", .desc = "[I/O] 3270"},
 	{.irq = IRQIO_TAP,  .name = "TAP", .desc = "[I/O] Tape"},
 	{.irq = IRQIO_VMR,  .name = "VMR", .desc = "[I/O] Unit Record Devices"},
-	{.irq = IRQIO_LCS,  .name = "LCS", .desc = "[I/O] LCS"},
 	{.irq = IRQIO_CTC,  .name = "CTC", .desc = "[I/O] CTC"},
 	{.irq = IRQIO_ADM,  .name = "ADM", .desc = "[I/O] EADM Subchannel"},
 	{.irq = IRQIO_CSC,  .name = "CSC", .desc = "[I/O] CHSC Subchannel"},

drivers/s390/net/Kconfig

@@ -2,15 +2,6 @@
 menu "S/390 network device drivers"
 	depends on NETDEVICES && S390
 
-config LCS
-	def_tristate m
-	prompt "Lan Channel Station Interface"
-	depends on CCW && NETDEVICES && ETHERNET
-	help
-	  Select this option if you want to use LCS networking on IBM System z.
-	  To compile as a module, choose M. The module name is lcs.
-	  If you do not use LCS, choose N.
-
 config CTCM
 	def_tristate m
 	prompt "CTC and MPC SNA device support"
@@ -98,7 +89,7 @@ config QETH_OSX
 
 config CCWGROUP
 	tristate
-	default (LCS || CTCM || QETH || SMC)
+	default (CTCM || QETH || SMC)
 
 config ISM
 	tristate "Support for ISM vPCI Adapter"

drivers/s390/net/Makefile

@@ -8,7 +8,6 @@ obj-$(CONFIG_CTCM) += ctcm.o fsm.o
 obj-$(CONFIG_NETIUCV) += netiucv.o fsm.o
 obj-$(CONFIG_SMSGIUCV) += smsgiucv.o
 obj-$(CONFIG_SMSGIUCV_EVENT) += smsgiucv_app.o
-obj-$(CONFIG_LCS) += lcs.o
 qeth-y += qeth_core_sys.o qeth_core_main.o qeth_core_mpc.o qeth_ethtool.o
 obj-$(CONFIG_QETH) += qeth.o
 qeth_l2-y += qeth_l2_main.o qeth_l2_sys.o

drivers/s390/net/ism_drv.c

@@ -588,6 +588,15 @@ static int ism_dev_init(struct ism_dev *ism)
 	return ret;
 }
 
+static void ism_dev_release(struct device *dev)
+{
+	struct ism_dev *ism;
+
+	ism = container_of(dev, struct ism_dev, dev);
+
+	kfree(ism);
+}
+
 static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct ism_dev *ism;
@@ -601,6 +610,7 @@ static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	dev_set_drvdata(&pdev->dev, ism);
 	ism->pdev = pdev;
 	ism->dev.parent = &pdev->dev;
+	ism->dev.release = ism_dev_release;
 	device_initialize(&ism->dev);
 	dev_set_name(&ism->dev, dev_name(&pdev->dev));
 	ret = device_add(&ism->dev);
@@ -637,7 +647,7 @@ static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	device_del(&ism->dev);
 err_dev:
 	dev_set_drvdata(&pdev->dev, NULL);
-	kfree(ism);
+	put_device(&ism->dev);
 
 	return ret;
 }
@@ -682,7 +692,7 @@ static void ism_remove(struct pci_dev *pdev)
 	pci_disable_device(pdev);
 	device_del(&ism->dev);
 	dev_set_drvdata(&pdev->dev, NULL);
-	kfree(ism);
+	put_device(&ism->dev);
 }
 
 static struct pci_driver ism_driver = {