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authorMark Rutland <mark.rutland@arm.com>2020-12-03 15:24:03 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2020-12-03 16:54:57 +0000
commit701f49065e68741a26752e6ae235c02bcafa2424 (patch)
treeae06d465f1c4e8e05e54f85538912d471cba6171 /arch/arm64/kernel/cpufeature.c
parent1517c4facf2e66401394998dba1ee236fd261310 (diff)
arm64: mark __system_matches_cap as __maybe_unused
Now that the PAN toggling has been removed, the only user of __system_matches_cap() is has_generic_auth(), which is only built when CONFIG_ARM64_PTR_AUTH is selected, and Qian reports that this results in a build-time warning when CONFIG_ARM64_PTR_AUTH is not selected: | arch/arm64/kernel/cpufeature.c:2649:13: warning: '__system_matches_cap' defined but not used [-Wunused-function] | static bool __system_matches_cap(unsigned int n) | ^~~~~~~~~~~~~~~~~~~~ It's tricky to restructure things to prevent this, so let's mark __system_matches_cap() as __maybe_unused, as we used to do for the other user of __system_matches_cap() which we just removed. Reported-by: Qian Cai <qcai@redhat.com> Suggested-by: Qian Cai <qcai@redhat.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20201203152403.26100-1-mark.rutland@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/cpufeature.c')
-rw-r--r--arch/arm64/kernel/cpufeature.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index cf09bac80adb..cffcb0198bae 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2634,7 +2634,7 @@ bool this_cpu_has_cap(unsigned int n)
* - The SYSTEM_FEATURE cpu_hwcaps may not have been set.
* In all other cases cpus_have_{const_}cap() should be used.
*/
-static bool __system_matches_cap(unsigned int n)
+static bool __maybe_unused __system_matches_cap(unsigned int n)
{
if (n < ARM64_NCAPS) {
const struct arm64_cpu_capabilities *cap = cpu_hwcaps_ptrs[n];