Commit-ID: 7030a7e9321166eef44c811fe4af4d460360d424
Gitweb: http://git.kernel.org/tip/7030a7e9321166eef44c811fe4af4d460360d424
Author: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
AuthorDate: Wed, 13 Jan 2016 15:39:40 +0300
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Thu, 14 Jan 2016 09:46:00 +0100
x86/cpu/amd: Remove an unneeded condition in srat_detect_node()
Originally we calculated ht_nodeid as "ht_nodeid = apicid -
boot_cpu_id;" so presumably it could be negative.
But after commit:
01aaea1afbcd ('x86: introduce initial apicid')
we use c->initial_apicid which is an unsigned short and thus always >= 0.
It causes a static checker warning to test for impossible
conditions so let's remove it.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@xxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Hector Marco-Gisbert <hecmargi@xxxxxx>
Cc: Huang Rui <ray.huang@xxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Yinghai Lu <yhlu.kernel@xxxxxxxxx>
Link: http://lkml.kernel.org/r/20160113123940.GE19993@mwanda
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/cpu/amd.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index e678dde..a07956a 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -434,8 +434,7 @@ static void srat_detect_node(struct cpuinfo_x86 *c)
*/
int ht_nodeid = c->initial_apicid;
- if (ht_nodeid >= 0 &&
- __apicid_to_node[ht_nodeid] != NUMA_NO_NODE)
+ if (__apicid_to_node[ht_nodeid] != NUMA_NO_NODE)
node = __apicid_to_node[ht_nodeid];
/* Pick a nearby node */
if (!node_online(node))
--
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