Frederic Barrat 05dd7da769 powerpc/powernv/ioda: Fix ref count for devices with their own PE ... The pci_dn structure used to store a pointer to the struct pci_dev, so taking a reference on the device was required. However, the pci_dev pointer was later removed from the pci_dn structure, but the reference was kept for the npu device. See commit 902bdc5745 ("powerpc/powernv/idoa: Remove unnecessary pcidev from pci_dn"). We don't need to take a reference on the device when assigning the PE as the struct pnv_ioda_pe is cleaned up at the same time as the (physical) device is released. Doing so prevents the device from being released, which is a problem for opencapi devices, since we want to be able to remove them through PCI hotplug. Now the ugly part: nvlink npu devices are not meant to be released. Because of the above, we've always leaked a reference and simply removing it now is dangerous and would likely require more work. There's currently no release device callback for nvlink devices for example. So to be safe, this patch leaks a reference on the npu device, but only for nvlink and not opencapi. Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191121134918.7155-2-fbarrat@linux.ibm.com		2020-01-23 21:31:16 +11:00
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boot	powerpc/devicetrees: Change 'gpios' to 'cs-gpios' on fsl, spi nodes	2020-01-23 21:31:14 +11:00
configs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2019-12-01 13:26:18 -08:00
crypto	powerpc updates for 5.5	2019-11-30 14:35:43 -08:00
include	powerpc/vdso32: Don't read cache line size from the datapage on PPC32.	2020-01-23 21:31:15 +11:00
kernel	powerpc/vdso32: miscellaneous optimisations	2020-01-23 21:31:16 +11:00
kexec	powerpc: Avoid clang warnings around setjmp and longjmp	2019-11-25 21:45:43 +11:00
kvm	PPC:	2019-12-22 10:26:59 -08:00
lib	powerpc: Fix __clear_user() with KUAP enabled	2019-12-16 23:19:44 +11:00
math-emu	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
mm	powerpc/8xx: Fix permanently mapped IMMR region.	2020-01-23 21:31:14 +11:00
net	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
oprofile	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333	2019-06-05 17:37:06 +02:00
perf	powerpc updates for 5.5	2019-11-30 14:35:43 -08:00
platforms	powerpc/powernv/ioda: Fix ref count for devices with their own PE	2020-01-23 21:31:16 +11:00
purgatory	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
sysdev	powerpc/mpic: constify copied structure	2020-01-07 21:42:16 +11:00
tools	powerpc/tools: Don't quote $objdump in scripts	2019-10-30 22:55:12 +11:00
xmon	powerpc/xmon: don't access ASDR in VMs	2020-01-14 11:04:08 +10:00
Kbuild	powerpc/kexec: Move kexec files into a dedicated subdir.	2019-11-21 15:41:34 +11:00
Kconfig	powerpc: Remove STRICT_KERNEL_RWX incompatibility with RELOCATABLE	2020-01-16 14:59:36 +10:00
Kconfig.debug	powerpc/ptdump: Only enable PPC_CHECK_WX with STRICT_KERNEL_RWX	2020-01-23 21:31:13 +11:00
Makefile	powerpc: Don't add -mabi= flags when building with Clang	2019-11-25 21:45:43 +11:00
Makefile.postlink	kbuild: add $(BASH) to run scripts with bash-extension	2019-09-04 22:54:13 +09:00