printk: Remove redundant deferred check in vprintk()

The helper printk_get_console_flush_type() is already calling
is_printk_legacy_deferred() to determine if legacy printing is
to be offloaded. Therefore there is no need for vprintk() to
perform this check as well. Remove the redundant check from
vprintk().

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20241209111746.192559-2-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>

Author: jogness

kernel/printk/printk_safe.c

@@ -74,15 +74,6 @@ asmlinkage int vprintk(const char *fmt, va_list args)
 	if (unlikely(kdb_trap_printk && kdb_printf_cpu < 0))
 		return vkdb_printf(KDB_MSGSRC_PRINTK, fmt, args);
 #endif
-
-	/*
-	 * Use the main logbuf even in NMI. But avoid calling console
-	 * drivers that might have their own locks.
-	 */
-	if (is_printk_legacy_deferred())
-		return vprintk_deferred(fmt, args);
-
-	/* No obstacles. */
 	return vprintk_default(fmt, args);
 }
 EXPORT_SYMBOL(vprintk);