x86/mce: Do not use memset to clear the banks bitmaps

The bitmap is a single unsigned long so no need for the function call. No functional changes. Signed-off-by: Borislav Petkov <[email protected]> Link: https://lore.kernel.org/r/[email protected]
juliens · Dec 13, 2021 · cd5e0d1 · cd5e0d1
1 parent 1e56279
commit cd5e0d1
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
@@ -1336,8 +1336,8 @@ static noinstr void unexpected_machine_check(struct pt_regs *regs)
 noinstr void do_machine_check(struct pt_regs *regs)
 {
 	int worst = 0, order, no_way_out, kill_current_task, lmce;
-	DECLARE_BITMAP(valid_banks, MAX_NR_BANKS);
-	DECLARE_BITMAP(toclear, MAX_NR_BANKS);
+	DECLARE_BITMAP(valid_banks, MAX_NR_BANKS) = { 0 };
+	DECLARE_BITMAP(toclear, MAX_NR_BANKS) = { 0 };
 	struct mca_config *cfg = &mca_cfg;
 	struct mce m, *final;
 	char *msg = NULL;
@@ -1381,7 +1381,6 @@ noinstr void do_machine_check(struct pt_regs *regs)
 	final = this_cpu_ptr(&mces_seen);
 	*final = m;
 
-	memset(valid_banks, 0, sizeof(valid_banks));
 	no_way_out = mce_no_way_out(&m, &msg, valid_banks, regs);
 
 	barrier();