Pierre Crégut 35ff867b76 PCI/IOV: Serialize sysfs sriov_numvfs reads vs writes ... When sriov_numvfs is being updated, we call the driver->sriov_configure() function, which may enable VFs and call probe functions, which may make new devices visible. This all happens before before sriov_numvfs_store() updates sriov->num_VFs, so previously, concurrent sysfs reads of sriov_numvfs returned stale values. Serialize the sysfs read vs the write so the read returns the correct num_VFs value. [bhelgaas: hold device_lock instead of checking mutex_is_locked()] Link: https://bugzilla.kernel.org/show_bug.cgi?id=202991 Link: https://lore.kernel.org/r/20190911072736.32091-1-pierre.cregut@orange.com Signed-off-by: Pierre Crégut <pierre.cregut@orange.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>		2019-10-15 16:39:12 -05:00
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controller	pci-v5.4-changes	2019-09-23 19:16:01 -07:00
endpoint	PCI: endpoint: Clear BAR before freeing its space	2019-06-11 10:57:54 +01:00
hotplug	pci-v5.4-changes	2019-09-23 19:16:01 -07:00
pcie	pci-v5.4-changes	2019-09-23 19:16:01 -07:00
switch	New feature to add support for NTB virtual MSI interrupts, the ability	2019-07-21 09:46:59 -07:00
access.c	PCI: Make pcie_downstream_port() available outside of access.c	2019-09-07 07:45:25 -05:00
ats.c	PCI/ATS: Remove unnecessary EXPORT_SYMBOL_GPL()	2019-10-15 16:39:11 -05:00
bus.c	PCI: Unexport pci_bus_get() and pci_bus_put()	2019-07-23 18:32:49 -05:00
ecam.c
host-bridge.c	PCI: Tidy comments	2018-03-19 14:20:43 -05:00
iov.c	PCI/IOV: Serialize sysfs sriov_numvfs reads vs writes	2019-10-15 16:39:12 -05:00
irq.c	PCI: Use IRQF_ONESHOT if pci_request_irq() called with no handler	2018-07-31 10:43:43 -05:00
Kconfig	pci-v5.4-changes	2019-09-23 19:16:01 -07:00
Makefile	PCI: OF: Allow of_pci_get_max_link_speed() to be used by PCI Endpoint drivers	2019-04-15 13:24:02 +01:00
mmap.c	PCI: Fix typos and whitespace errors	2019-07-09 07:24:53 -05:00
msi.c	New feature to add support for NTB virtual MSI interrupts, the ability	2019-07-21 09:46:59 -07:00
of.c	PCI: OF: Correct of_irq_parse_pci() documentation	2019-08-30 14:00:34 -05:00
p2pdma.c	PCI/P2PDMA: Update pci_p2pdma_distance_many() documentation	2019-08-16 08:41:59 -05:00
pci-acpi.c	Merge branch 'pci/enumeration'	2019-09-23 16:10:08 -05:00
pci-bridge-emul.c	PCI: Use static const struct, not const static struct	2019-09-05 13:26:46 -05:00
pci-bridge-emul.h	PCI: pci-bridge-emul: Extend pci_bridge_emul_init() with flags	2019-02-22 10:51:14 +00:00
pci-driver.c	pci-v5.3-changes	2019-07-15 20:44:49 -07:00
pci-label.c	PCI: Tidy comments	2018-03-19 14:20:43 -05:00
pci-mid.c	x86/cpu: Sanitize FAM6_ATOM naming	2018-10-02 10:14:32 +02:00
pci-pf-stub.c	PCI: Fix typos and whitespace errors	2019-07-09 07:24:53 -05:00
pci-stub.c	PCI: Replace printk(KERN_INFO) with pr_info(), etc	2019-05-09 07:49:54 -05:00
pci-sysfs.c	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
pci.c	pci-v5.4-changes	2019-09-23 19:16:01 -07:00
pci.h	PCI/ATS: Make pci_restore_pri_state(), pci_restore_pasid_state() private	2019-10-15 16:39:11 -05:00
probe.c	PCI/ATS: Cache PASID Capability offset	2019-10-15 16:39:10 -05:00
proc.c	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
quirks.c	PCI: Add DMA alias quirk for Intel VCA NTB	2019-10-15 16:39:12 -05:00
remove.c	PCI/ASPM: Fix link_state teardown on device removal	2018-09-17 16:32:23 -05:00
rom.c	PCI: Make pci_get_rom_size() static	2018-06-29 21:17:26 -05:00
search.c	PCI: Unexport pci_bus_sem	2019-07-23 18:32:50 -05:00
setup-bus.c	PCI: Use PCI_SRIOV_NUM_BARS in loops instead of PCI_IOV_RESOURCE_END	2019-08-08 15:12:12 -05:00
setup-irq.c	PCI: Tidy comments	2018-03-19 14:20:43 -05:00
setup-res.c	PCI: Remove messages about reassigning resources	2018-04-11 08:46:50 -05:00
slot.c	PCI: Decode PCIe 32 GT/s link speed	2019-06-13 16:49:45 -05:00
syscall.c	PCI: Lock down BAR access when the kernel is locked down	2019-08-19 21:54:15 -07:00
vc.c	Merge branch 'pci/trivial'	2019-09-23 16:10:31 -05:00
vpd.c	PCI/VPD: Prevent VPD access for Amazon's Annapurna Labs Root Port	2019-09-16 14:10:09 +01:00
xen-pcifront.c	Merge branch 'pci/printk'	2019-05-13 18:34:46 -05:00