x86: Fix typo s/ECLR/ELCR/ for the PIC register

The proper spelling for the acronym referring to the Edge/Level Control 
Register is ELCR rather than ECLR.  Adjust references accordingly.  No 
functional change.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2107200251080.9461@angie.orcam.me.uk

Author: maciej-w-rozycki

arch/x86/kernel/acpi/boot.c

@@ -558,10 +558,10 @@ acpi_parse_nmi_src(union acpi_subtable_headers * header, const unsigned long end
  * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
  * it may require Edge Trigger -- use "acpi_sci=edge"
  *
- * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
+ * Port 0x4d0-4d1 are ELCR1 and ELCR2, the Edge/Level Control Registers
  * for the 8259 PIC.  bit[n] = 1 means irq[n] is Level, otherwise Edge.
- * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
- * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
+ * ELCR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
+ * ELCR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
  */
 
 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)

arch/x86/kvm/i8259.c

@@ -541,17 +541,17 @@ static int picdev_slave_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
 			    addr, len, val);
 }
 
-static int picdev_eclr_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
+static int picdev_elcr_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
 			     gpa_t addr, int len, const void *val)
 {
-	return picdev_write(container_of(dev, struct kvm_pic, dev_eclr),
+	return picdev_write(container_of(dev, struct kvm_pic, dev_elcr),
 			    addr, len, val);
 }
 
-static int picdev_eclr_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
+static int picdev_elcr_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
 			    gpa_t addr, int len, void *val)
 {
-	return picdev_read(container_of(dev, struct kvm_pic, dev_eclr),
+	return picdev_read(container_of(dev, struct kvm_pic, dev_elcr),
 			    addr, len, val);
 }
 
@@ -577,9 +577,9 @@ static const struct kvm_io_device_ops picdev_slave_ops = {
 	.write    = picdev_slave_write,
 };
 
-static const struct kvm_io_device_ops picdev_eclr_ops = {
-	.read     = picdev_eclr_read,
-	.write    = picdev_eclr_write,
+static const struct kvm_io_device_ops picdev_elcr_ops = {
+	.read     = picdev_elcr_read,
+	.write    = picdev_elcr_write,
 };
 
 int kvm_pic_init(struct kvm *kvm)
@@ -602,7 +602,7 @@ int kvm_pic_init(struct kvm *kvm)
 	 */
 	kvm_iodevice_init(&s->dev_master, &picdev_master_ops);
 	kvm_iodevice_init(&s->dev_slave, &picdev_slave_ops);
-	kvm_iodevice_init(&s->dev_eclr, &picdev_eclr_ops);
+	kvm_iodevice_init(&s->dev_elcr, &picdev_elcr_ops);
 	mutex_lock(&kvm->slots_lock);
 	ret = kvm_io_bus_register_dev(kvm, KVM_PIO_BUS, 0x20, 2,
 				      &s->dev_master);
@@ -613,7 +613,7 @@ int kvm_pic_init(struct kvm *kvm)
 	if (ret < 0)
 		goto fail_unreg_2;
 
-	ret = kvm_io_bus_register_dev(kvm, KVM_PIO_BUS, 0x4d0, 2, &s->dev_eclr);
+	ret = kvm_io_bus_register_dev(kvm, KVM_PIO_BUS, 0x4d0, 2, &s->dev_elcr);
 	if (ret < 0)
 		goto fail_unreg_1;
 
@@ -647,7 +647,7 @@ void kvm_pic_destroy(struct kvm *kvm)
 	mutex_lock(&kvm->slots_lock);
 	kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_master);
 	kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_slave);
-	kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_eclr);
+	kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_elcr);
 	mutex_unlock(&kvm->slots_lock);
 
 	kvm->arch.vpic = NULL;

arch/x86/kvm/irq.h

@@ -55,7 +55,7 @@ struct kvm_pic {
 	int output;		/* intr from master PIC */
 	struct kvm_io_device dev_master;
 	struct kvm_io_device dev_slave;
-	struct kvm_io_device dev_eclr;
+	struct kvm_io_device dev_elcr;
 	void (*ack_notifier)(void *opaque, int irq);
 	unsigned long irq_states[PIC_NUM_PINS];
 };