From: Qian Cai cai@lca.pw
[ Upstream commit 1b7aebf0487613033aff26420e32fa2076d52846 ]
cpuinfo_x86.x86_model is an unsigned type, so comparing against zero will generate a compilation warning:
arch/x86/kernel/cpu/cacheinfo.c: In function 'cacheinfo_amd_init_llc_id': arch/x86/kernel/cpu/cacheinfo.c:662:19: warning: comparison is always true \ due to limited range of data type [-Wtype-limits]
Remove the unnecessary lower bound check.
[ bp: Massage. ]
Fixes: 68091ee7ac3c ("x86/CPU/AMD: Calculate last level cache ID from number of sharing threads") Signed-off-by: Qian Cai cai@lca.pw Signed-off-by: Borislav Petkov bp@suse.de Reviewed-by: Sean Christopherson sean.j.christopherson@intel.com Cc: "Gustavo A. R. Silva" gustavo@embeddedor.com Cc: "H. Peter Anvin" hpa@zytor.com Cc: Ingo Molnar mingo@redhat.com Cc: Masami Hiramatsu mhiramat@kernel.org Cc: Pu Wen puwen@hygon.cn Cc: Suravee Suthikulpanit suravee.suthikulpanit@amd.com Cc: Thomas Gleixner tglx@linutronix.de Cc: x86-ml x86@kernel.org Link: https://lkml.kernel.org/r/1560954773-11967-1-git-send-email-cai@lca.pw Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/kernel/cpu/cacheinfo.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c index 0c5fcbd998cf..9d863e8f9b3f 100644 --- a/arch/x86/kernel/cpu/cacheinfo.c +++ b/arch/x86/kernel/cpu/cacheinfo.c @@ -651,8 +651,7 @@ void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c, int cpu, u8 node_id) if (c->x86 < 0x17) { /* LLC is at the node level. */ per_cpu(cpu_llc_id, cpu) = node_id; - } else if (c->x86 == 0x17 && - c->x86_model >= 0 && c->x86_model <= 0x1F) { + } else if (c->x86 == 0x17 && c->x86_model <= 0x1F) { /* * LLC is at the core complex level. * Core complex ID is ApicId[3] for these processors.