#include "tests.h" #include "debug.h" #include "util.h" #include "c++/clang-c.h" static struct { int (*func)(void); const char *desc; } clang_testcase_table[] = { #ifdef HAVE_LIBCLANGLLVM_SUPPORT { .func = test__clang_to_IR, .desc = "builtin clang compile C source to IR", }, { .func = test__clang_to_obj, .desc = "builtin clang compile C source to ELF object", }, #endif }; int test__clang_subtest_get_nr(void) { return (int)ARRAY_SIZE(clang_testcase_table); } const char *test__clang_subtest_get_desc(int i) { if (i < 0 || i >= (int)ARRAY_SIZE(clang_testcase_table)) return NULL; return clang_testcase_table[i].desc; } #ifndef HAVE_LIBCLANGLLVM_SUPPORT int test__clang(int i __maybe_unused) { return TEST_SKIP; } #else int test__clang(int i) { if (i < 0 || i >= (int)ARRAY_SIZE(clang_testcase_table)) return TEST_FAIL; return clang_testcase_table[i].func(); } #endif ss='form'>
net-next plumbingsTobias Klauser
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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 /sound/drivers/opl3
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 'sound/drivers/opl3')