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d7d55536c6
linux/drivers/pci
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Gavin Shan d7d55536c6 drivers/pci/hotplug: Handle presence detection change properly 
The surprise hotplug is driven by interrupt in PowerNV PCI hotplug
driver. In the interrupt handler, pnv_php_interrupt(), we bail when
pnv_pci_get_presence_state() returns zero wrongly. It causes the
presence change event is always ignored incorrectly.

This fixes the issue by bailing on error (non-zero value) returned
from pnv_pci_get_presence_state().

Fixes: 360aebd85a ("drivers/pci/hotplug: Support surprise hotplug in powernv driver")
Cc: stable@vger.kernel.org #v4.9+
Reported-by: Hank Chang <hankmax0000@gmail.com>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Tested-by: Willie Liauw <williel@supermicro.com.tw>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-02-15 20:02:43 +11:00
..
host PCI/MSI: pci-xgene-msi: Fix CPU hotplug registration handling 2017-01-17 08:41:51 -06:00
hotplug drivers/pci/hotplug: Handle presence detection change properly 2017-02-15 20:02:43 +11:00
pcie pci-v4.10-changes 2016-12-15 12:46:48 -08:00
access.c PCI: Warn on possible RW1C corruption for sub-32 bit config writes 2016-11-21 16:25:39 -06:00
ats.c PCI: Remove pci_ats_enabled() 2015-08-13 15:59:59 -05:00
bus.c PCI: Autosense device removal in pci_bridge_d3_update() 2016-11-17 18:44:56 -06:00
ecam.c PCI: Add MCFG quirks for Qualcomm QDF2432 host controller 2016-12-06 13:45:49 -06:00
host-bridge.c cxl: use pcibios_free_controller_deferred() when removing vPHBs 2016-08-22 11:09:33 +10:00
hotplug-pci.c
htirq.c x86/htirq: Use hierarchical irqdomain to manage Hypertransport interrupts 2015-04-24 15:36:50 +02:00
iov.c PCI: Remove pci_resource_bar() and pci_iov_resource_bar() 2016-11-29 18:05:09 -06:00
irq.c
Kconfig PCI/MSI: Enable PCI_MSI_IRQ_DOMAIN support for ARC 2016-09-06 10:53:32 -05:00
Makefile x86/platform/intel-mid: Add Power Management Unit driver 2016-06-15 10:10:49 +02:00
msi.c pci-v4.10-changes 2016-12-15 12:46:48 -08:00
of.c PCI/MSI: Use of_msi_get_domain instead of open-coded "msi-parent" parsing 2015-10-16 13:07:14 +01:00
pci-acpi.c Merge branch 'pci/pm' into next 2016-12-12 11:25:04 -06:00
pci-driver.c Merge branch 'pci/pm' into next 2016-10-03 09:43:21 -05:00
pci-label.c PCI: Fix broken URL for Dell biosdevname 2016-02-29 12:03:19 -06:00
pci-mid.c pci-v4.10-changes 2016-12-15 12:46:48 -08:00
pci-stub.c
pci-sysfs.c PCI: Create revision file in sysfs 2016-11-21 16:25:32 -06:00
pci.c Merge branch 'pci/virtualization' into next 2016-12-12 11:25:05 -06:00
pci.h Merge branch 'pci/virtualization' into next 2016-12-12 11:25:05 -06:00
probe.c PCI: Enumerate switches below PCI-to-PCIe bridges 2017-01-11 09:11:53 -06:00
proc.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
quirks.c ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
remove.c PCI: Autosense device removal in pci_bridge_d3_update() 2016-11-17 18:44:56 -06:00
rom.c PCI: Add comments about ROM BAR updating 2016-11-29 18:05:09 -06:00
search.c PCI: Add support for multiple DMA aliases 2016-04-11 14:34:32 -05:00
setup-bus.c x86/ioapic: Ignore root bridges without a companion ACPI device 2016-09-10 20:30:31 +02:00
setup-irq.c PCI: Export symbols required for loadable host driver modules 2015-04-08 14:17:10 -05:00
setup-res.c Merge branch 'pci/host-rockchip' into next 2016-12-12 11:25:11 -06:00
slot.c PCI: Hold pci_slot_mutex while searching bus->slots list 2015-07-30 16:19:53 -05:00
syscall.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
vc.c PCI: Fix unaligned accesses in VC code 2016-06-20 13:24:20 -05:00
vpd.c
xen-pcifront.c xen: make use of xenbus_read_unsigned() in xen-pcifront 2016-11-07 13:55:26 +01:00