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Subject[PATCH] arm64: cpu_errata: include required headers
Without including psci.h and arm-smccc.h, we now get a build failure in
some configurations:

arch/arm64/kernel/cpu_errata.c: In function 'arm64_update_smccc_conduit':
arch/arm64/kernel/cpu_errata.c:278:10: error: 'psci_ops' undeclared (first use in this function); did you mean 'sysfs_ops'?

arch/arm64/kernel/cpu_errata.c: In function 'arm64_set_ssbd_mitigation':
arch/arm64/kernel/cpu_errata.c:311:3: error: implicit declaration of function 'arm_smccc_1_1_hvc' [-Werror=implicit-function-declaration]
arm_smccc_1_1_hvc(ARM_SMCCC_ARCH_WORKAROUND_2, state, NULL);

Signed-off-by: Arnd Bergmann <>
This showed up only recently, but I have not bisected what caused it.
arch/arm64/kernel/cpu_errata.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index 2b9a31a6a16a..1d2b6d768efe 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -16,6 +16,8 @@
* along with this program. If not, see <>.

+#include <linux/arm-smccc.h>
+#include <linux/psci.h>
#include <linux/types.h>
#include <asm/cpu.h>
#include <asm/cputype.h>
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