KVM: s390: pci: fix plain integer as NULL pointer warnings

Fix some sparse warnings that a plain integer 0 is being used instead of
NULL.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Link: https://lore.kernel.org/r/20220915175514.167899-1-mjrosato@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

diff --git a/arch/s390/kvm/pci.c b/arch/s390/kvm/pci.c
index bb8c335..3c12637 100644 (file)
--- a/arch/s390/kvm/pci.c
+++ b/arch/s390/kvm/pci.c
@@ -58,7 +58,7 @@ static int zpci_setup_aipb(u8 nisc)
        if (!zpci_aipb)
                return -ENOMEM;
 
-       aift->sbv = airq_iv_create(ZPCI_NR_DEVICES, AIRQ_IV_ALLOC, 0);
+       aift->sbv = airq_iv_create(ZPCI_NR_DEVICES, AIRQ_IV_ALLOC, NULL);
        if (!aift->sbv) {
                rc = -ENOMEM;
                goto free_aipb;
@@ -373,7 +373,7 @@ static int kvm_s390_pci_aif_disable(struct zpci_dev *zdev, bool force)
                gaite->gisc = 0;
                gaite->aisbo = 0;
                gaite->gisa = 0;
-               aift->kzdev[zdev->aisb] = 0;
+               aift->kzdev[zdev->aisb] = NULL;
                /* Clear zdev info */
                airq_iv_free_bit(aift->sbv, zdev->aisb);
                airq_iv_release(zdev->aibv);

diff --git a/arch/s390/kvm/pci.h b/arch/s390/kvm/pci.h
index 3a3606c..486d06e 100644 (file)
--- a/arch/s390/kvm/pci.h
+++ b/arch/s390/kvm/pci.h
@@ -46,9 +46,9 @@ extern struct zpci_aift *aift;
 static inline struct kvm *kvm_s390_pci_si_to_kvm(struct zpci_aift *aift,
                                                 unsigned long si)
 {
-       if (!IS_ENABLED(CONFIG_VFIO_PCI_ZDEV_KVM) || aift->kzdev == 0 ||
-           aift->kzdev[si] == 0)
-               return 0;
+       if (!IS_ENABLED(CONFIG_VFIO_PCI_ZDEV_KVM) || !aift->kzdev ||
+           !aift->kzdev[si])
+               return NULL;
        return aift->kzdev[si]->kvm;
 };