UPSTREAM: LoongArch: KVM: Remove never called default case statement

IOCSR instruction supports 1/2/4/8 bytes access, len must be 1/2/4/8
bytes from iocsr exit emulation function kvm_emu_iocsr(), remove the
default case in switch case statements.

Signed-off-by: Bibo Mao <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>

(cherry picked from commit 9afce1f)
Signed-off-by: Kexy Biscuit <[email protected]>

Author: bibo-mao

arch/loongarch/kvm/intc/eiointc.c

@@ -333,12 +333,9 @@ static int kvm_eiointc_read(struct kvm_vcpu *vcpu,
 	case 4:
 		ret = loongarch_eiointc_readl(vcpu, eiointc, addr, val);
 		break;
-	case 8:
+	default:
 		ret = loongarch_eiointc_readq(vcpu, eiointc, addr, val);
 		break;
-	default:
-		WARN_ONCE(1, "%s: Abnormal address access: addr 0x%llx, size %d\n",
-						__func__, addr, len);
 	}
 	spin_unlock_irqrestore(&eiointc->lock, flags);
 
@@ -709,12 +706,9 @@ static int kvm_eiointc_write(struct kvm_vcpu *vcpu,
 	case 4:
 		ret = loongarch_eiointc_writel(vcpu, eiointc, addr, val);
 		break;
-	case 8:
+	default:
 		ret = loongarch_eiointc_writeq(vcpu, eiointc, addr, val);
 		break;
-	default:
-		WARN_ONCE(1, "%s: Abnormal address access: addr 0x%llx, size %d\n",
-						__func__, addr, len);
 	}
 	spin_unlock_irqrestore(&eiointc->lock, flags);