Niklas Schnelle b97bf44f99 s390/pci: fix PF/VF linking on hot plug ... Currently there are four places in which a PCI function is scanned and made available to drivers: 1. In pci_scan_root_bus() as part of the initial zbus creation. 2. In zpci_bus_add_devices() when registering a device in configured state on a zbus that has already been scanned. 3. When a function is already known to zPCI (in reserved/standby state) and configuration is triggered through firmware by PEC 0x301. 4. When a device is already known to zPCI (in standby/reserved state) and configuration is triggered from within Linux using enable_slot(). The PF/VF linking step and setting of pdev->is_virtfn introduced with commit e5794cf1a2 ("s390/pci: create links between PFs and VFs") was only triggered for the second case, which is where VFs created through sriov_numvfs usually land. However unlike some other platforms but like POWER VFs can be individually enabled/disabled through /sys/bus/pci/slots. Fix this by doing VF setup as part of pcibios_bus_add_device() which is called in all of the above cases. Finally to remove the PF/VF links call the common code pci_iov_remove_virtfn() function to remove linked VFs. This takes care of the necessary sysfs cleanup. Fixes: e5794cf1a2 ("s390/pci: create links between PFs and VFs") Cc: <stable@vger.kernel.org> # 5.8: 2f0230b2f2: s390/pci: re-introduce zpci_remove_device() Cc: <stable@vger.kernel.org> # 5.8 Acked-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>		2020-08-17 13:17:34 +02:00
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appldata
boot
configs
crypto
hypfs
include	- Allow s390 debug feature to handle finally more than 256 CPU numbers, instead	2020-08-13 12:38:32 -07:00
kernel	s390/ptrace: fix storage key handling	2020-08-17 13:17:14 +02:00
kvm	mm/gup: remove task_struct pointer for all gup code	2020-08-12 10:58:04 -07:00
lib	s390/test_unwind: fix possible memleak in test_unwind()	2020-08-11 18:16:16 +02:00
mm	- Allow s390 debug feature to handle finally more than 256 CPU numbers, instead	2020-08-13 12:38:32 -07:00
net
oprofile
pci	s390/pci: fix PF/VF linking on hot plug	2020-08-17 13:17:34 +02:00
purgatory
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Kbuild	s390/numa: move code to arch/s390/kernel	2020-08-11 18:16:55 +02:00
Kconfig	s390/time: remove select CLOCKSOURCE_VALIDATE_LAST_CYCLE again	2020-08-11 18:16:48 +02:00
Kconfig.debug
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