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 <bp@suse.de>
Link: https://lore.kernel.org/r/20211208111343.8130-2-bp@alien8.de

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 30de00f..7c264ee 100644 (file)
--- 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();