hvc_iseries.c: overwriting spin_lock_irqsave()

["Alexey Dobriyan" <adobriyan@gmail.com>]

Stephen, -git4 contains the following code

drivers/char/hvc_iseries.c:

static int put_chars(uint32_t vtermno, const char *buf, int count)
{
           unsigned long flags;

           spin_lock_irqsave(&consolelock, flags);
           if (viochar_is_console(pi) && !viopath_isactive(pi->lp)) {
                         spin_lock_irqsave(&consoleloglock, flags);

So, old flags are lost.
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