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ebd9cc6593
linux/arch/s390/pci
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Niklas Schnelle ebd9cc6593 s390/pci: fix clp_get_state() handling of -ENODEV 
With commit cc049eecfb ("s390/pci: simplify CLP List PCI handling")
clp_get_state() was changed to make use of the new clp_find_pci() helper
function to query a specific function. This however returns -ENODEV when
the device is not found at all and this error was passed to the caller.
It was missed however that the callers actually expect a success return
from clp_get_state() if the device is gone.

Fix this by handling the -ENODEV return of clp_find_pci() explicitly in
clp_get_state() returning success and setting the state parameter to
ZPCI_FN_STATE_RESERVED matching the design concept that a PCI function
that disappeared must have been resverved elsewhere. For all other error
returns continue to just pass them on to the caller.

Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Fixes: cc049eecfb ("s390/pci: simplify CLP List PCI handling")
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-09-07 13:38:42 +02:00
..
Makefile s390/pci: consolidate SR-IOV specific code 2020-09-14 11:38:34 +02:00
pci_bus.c s390/pci: improve DMA translation init and exit 2021-08-25 11:03:34 +02:00
pci_bus.h s390/pci: fix use after free of zpci_dev 2021-08-18 10:12:42 +02:00
pci_clp.c s390/pci: fix clp_get_state() handling of -ENODEV 2021-09-07 13:38:42 +02:00
pci_debug.c locking/atomic, s390/pci: Remove redundant casts 2019-06-03 12:32:57 +02:00
pci_dma.c s390/pci: improve DMA translation init and exit 2021-08-25 11:03:34 +02:00
pci_event.c s390/pci: improve DMA translation init and exit 2021-08-25 11:03:34 +02:00
pci_insn.c s390/pci: use register pair instead of register asm 2021-06-18 16:41:23 +02:00
pci_iov.c s390/pci: add missing pci_iov.h include 2020-09-16 14:08:47 +02:00
pci_iov.h s390/pci: consolidate SR-IOV specific code 2020-09-14 11:38:34 +02:00
pci_irq.c s390/pci: add zpci_set_irq()/zpci_clear_irq() 2021-06-28 11:18:28 +02:00
pci_mmio.c s390/pci: use register pair instead of register asm 2021-06-18 16:41:23 +02:00
pci_sysfs.c s390/pci: improve DMA translation init and exit 2021-08-25 11:03:34 +02:00
pci.c s390 updates for 5.15 merge window 2021-08-30 13:07:15 -07:00