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sparc: serial: Clean up the locking for -rt

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Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Allen Pais <allen.pais@oracle.com>
This commit is contained in:
David Miller
2014-03-04 15:28:35 -05:00
committed by David S. Miller
parent c3bebc71c4
commit e58e241c17
4 changed files with 25 additions and 39 deletions
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14
drivers/tty/serial/sunsu.c
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@@ -1295,13 +1295,10 @@ static void sunsu_console_write(struct console *co, const char *s,
unsigned int ier;
int locked = 1;
local_irq_save(flags);
if (up->port.sysrq) {
locked = 0;
} else if (oops_in_progress) {
locked = spin_trylock(&up->port.lock);
} else
spin_lock(&up->port.lock);
if (up->port.sysrq || oops_in_progress)
locked = spin_trylock_irqsave(&up->port.lock, flags);
else
spin_lock_irqsave(&up->port.lock, flags);
/*
* First save the UER then disable the interrupts
@@ -1319,8 +1316,7 @@ static void sunsu_console_write(struct console *co, const char *s,
serial_out(up, UART_IER, ier);
if (locked)
spin_unlock(&up->port.lock);
local_irq_restore(flags);
spin_unlock_irqrestore(&up->port.lock, flags);
}
/*