From: Dan Carpenter Date: Wed, 19 Apr 2023 07:58:43 +0000 (+0300) Subject: arm64: delete dead code in this_cpu_set_vectors() X-Git-Tag: v6.4-rc1~166^2~4^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=460e70e2dc9af3128f69e533daf349635c421b0a;p=thirdparty%2Fkernel%2Flinux.git arm64: delete dead code in this_cpu_set_vectors() The "slot" variable is an enum, and in this context it is an unsigned int. So the type means it can never be negative and also we never pass invalid data to this function. If something did pass invalid data then this check would be insufficient protection. Signed-off-by: Dan Carpenter Acked-by: Ard Biesheuvel Link: https://lore.kernel.org/r/73859c9e-dea0-4764-bf01-7ae694fa2e37@kili.mountain Signed-off-by: Will Deacon --- diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c index fca9cc6f55811..05f40c4e18fda 100644 --- a/arch/arm64/kernel/proton-pack.c +++ b/arch/arm64/kernel/proton-pack.c @@ -966,9 +966,6 @@ static void this_cpu_set_vectors(enum arm64_bp_harden_el1_vectors slot) { const char *v = arm64_get_bp_hardening_vector(slot); - if (slot < 0) - return; - __this_cpu_write(this_cpu_vector, v); /*