define TOOL_templ include $(1)/Makefile $(1) $(1)%: BUILD_DIR := $(1) $(1) $(1)%: CFLAGS += $$($(1)-eflags) $(1)_prehook: $(Q)echo "$(bold)$(WHAT) $(1):$(normal)" $(1): $(1)_prehook $$($(1)-lex) $$($(1)-yacc) $$(patsubst %.o,$(1)/%.o,$$($(1)-objs)) $(1)_clean: $(1)_clean_custom $(Q)$$(call RM,$(1)/*.o $(1)/$(1) $(1)/*.gz) $(1)_do_install: $(Q)$$(call INSTX,$(1)/$(1),$$(DESTDIR)$$(SBINDIR)) $(Q)$(GZIP) $(1).8 > $(1)/$(1).8.gz $(Q)$$(call INST,$(1)/$(1).8.gz,$$(DESTDIR)$$(MAN8DIR)) $(Q)$$(foreach file,$$($(1)-confs),$$(call INST,$$(file),$$(DESTDIR)$$(ETCDIRE));) $(1)_install: $(1)_do_install $(1)_post_install $(1)_uninstall: $(1)_uninstall_custom $(Q)$$(call RM,$$(DESTDIR)$$(SBINDIR)/$(1)) $(Q)$$(call RM,$$(DESTDIR)$$(MAN8DIR)/$(1).8.gz) $(1)/%.yy.o: $(1)/%.yy.c $$(CCQ) $$(CFLAGS) -o $$@ -c $$< $(1)/%.tab.o: $(1)/%.tab.c $$(CCQ) $$(CFLAGS) -o $$@ -c $$< $(1)/%.o: %.c %.h $$(CHECK) $$(CFLAGS) $$(CHECKFLAGS) $$< $$(CCQ) $$(CFLAGS) -o $(1)/$$(shell basename $$@) -c $$< $(1)/%.o: %.c $$(CHECK) $$(CFLAGS) $$(CHECKFLAGS) $$< $$(CCQ) $$(CFLAGS) -o $(1)/$$(shell basename $$@) -c $$< endef e-cleanup net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/tools/testing/selftests/intel_pstate
diff options
context:
space:
mode:
authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /tools/testing/selftests/intel_pstate
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'tools/testing/selftests/intel_pstate')