s390x/pci: refactor s390_pci_find_dev_by_fh
Because this function is called very frequently, we should use a more effective way to find the zpci device. So we use the FH's index to get the device directly. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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@ -198,19 +198,12 @@ S390PCIBusDevice *s390_pci_find_dev_by_idx(uint32_t idx)
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S390PCIBusDevice *s390_pci_find_dev_by_fh(uint32_t fh)
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{
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S390PCIBusDevice *pbdev;
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int i;
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S390pciState *s = s390_get_phb();
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S390PCIBusDevice *pbdev;
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if (!fh) {
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return NULL;
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}
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for (i = 0; i < PCI_SLOT_MAX; i++) {
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pbdev = &s->pbdev[i];
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if (pbdev->fh == fh) {
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return pbdev;
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}
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pbdev = &s->pbdev[fh & FH_MASK_INDEX];
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if (pbdev->fh != 0 && pbdev->fh == fh) {
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return pbdev;
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}
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return NULL;
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