tpci from kernel_misc in ubuntu_ltp failed with Test-case 12 on s390x only

Similar to lp:1878389 (already fixed), the Test-case 12 fails:
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test_pci 11 TPASS : PCI bus 00 slot 00 : Test-case '11'
test_pci 12 TFAIL : tpci.c:73: PCI bus 00 slot 00 : Test-case '12'
test_pci 13 TPASS : PCI bus 00 slot 00 : Test-case '13'
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Visible only on s390x instance s2lp4.s390x.lpar but not kernel02.s390x.zvm. Not seen on other architectures.

Kernels:
hirsute/linux/5.11.0-35.37
hirsute/linux/5.11.0-34.36
focal/linux/5.4.0-85.95
focal/linux/5.4.0-84.94
bionic/linux/4.15.0-157.164