summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2023-01-13 16:11:45 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-01-13 16:11:45 +0300
commitd45b832d6f41b003c1dee953096cfd4c6e5233b0 (patch)
tree378e74095ce935f5b612891f894527860498a654 /drivers
parentd9fc1511728c15df49ff18e49a494d00f78b7cd4 (diff)
parent68a63a412d18bd2e2577c8928139f92541afa7a6 (diff)
downloadlinux-d45b832d6f41b003c1dee953096cfd4c6e5233b0.tar.xz
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon: "Here's a sizeable batch of Friday the 13th arm64 fixes for -rc4. What could possibly go wrong? The obvious reason we have so much here is because of the holiday season right after the merge window, but we've also brought back an erratum workaround that was previously dropped at the last minute and there's an MTE coredumping fix that strays outside of the arch/arm64 directory. Summary: - Fix PAGE_TABLE_CHECK failures on hugepage splitting path - Fix PSCI encoding of MEM_PROTECT_RANGE function in UAPI header - Fix NULL deref when accessing debugfs node if PSCI is not present - Fix MTE core dumping when VMA list is being updated concurrently - Fix SME signal frame handling when SVE is not implemented by the CPU - Fix asm constraints for cmpxchg_double() to hazard both words - Fix build failure with stack tracer and older versions of Clang - Bring back workaround for Cortex-A715 erratum 2645198" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Fix build with CC=clang, CONFIG_FTRACE=y and CONFIG_STACK_TRACER=y arm64/mm: Define dummy pud_user_exec() when using 2-level page-table arm64: errata: Workaround possible Cortex-A715 [ESR|FAR]_ELx corruption firmware/psci: Don't register with debugfs if PSCI isn't available firmware/psci: Fix MEM_PROTECT_RANGE function numbers arm64/signal: Always allocate SVE signal frames on SME only systems arm64/signal: Always accept SVE signal frames on SME only systems arm64/sme: Fix context switch for SME only systems arm64: cmpxchg_double*: hazard against entire exchange variable arm64/uprobes: change the uprobe_opcode_t typedef to fix the sparse warning arm64: mte: Avoid the racy walk of the vma list during core dump elfcore: Add a cprm parameter to elf_core_extra_{phdrs,data_size} arm64: mte: Fix double-freeing of the temporary tag storage during coredump arm64: ptrace: Use ARM64_SME to guard the SME register enumerations arm64/mm: add pud_user_exec() check in pud_user_accessible_page() arm64/mm: fix incorrect file_map_count for invalid pmd
Diffstat (limited to 'drivers')
-rw-r--r--drivers/firmware/psci/psci.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index e7bcfca4159f..447ee4ea5c90 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -440,6 +440,9 @@ static const struct file_operations psci_debugfs_ops = {
static int __init psci_debugfs_init(void)
{
+ if (!invoke_psci_fn || !psci_ops.get_version)
+ return 0;
+
return PTR_ERR_OR_ZERO(debugfs_create_file("psci", 0444, NULL, NULL,
&psci_debugfs_ops));
}