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OpenCloudOS-Kernel
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[SPARC64] sunhv: Fix locking in sunhv_start_tx() 

Caller takes the lock already.

Also, fixup the poll loop in sunhv_break_ctl().  Just
like in console write, we udelay(2) and use a loop
limit of 1000000 iterations.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-02-18 16:32:22 -08:00
parent 11fc04e46a
commit 843dfb4d99
1 changed files with 2 additions and 6 deletions
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8
drivers/serial/sunhv.c
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@ -210,9 +210,6 @@ static void sunhv_stop_tx(struct uart_port *port)
static void sunhv_start_tx(struct uart_port *port)
{
struct circ_buf *xmit = &port->info->xmit;
unsigned long flags;
spin_lock_irqsave(&port->lock, flags);
while (!uart_circ_empty(xmit)) {
long status = hypervisor_con_putchar(xmit->buf[xmit->tail]);
@ -223,8 +220,6 @@ static void sunhv_start_tx(struct uart_port *port)
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
}
spin_unlock_irqrestore(&port->lock, flags);
}
/* port->lock is not held. */
@ -259,7 +254,7 @@ static void sunhv_break_ctl(struct uart_port *port, int break_state)
{
if (break_state) {
unsigned long flags;
int limit = 10000;
int limit = 1000000;
spin_lock_irqsave(&port->lock, flags);
@ -267,6 +262,7 @@ static void sunhv_break_ctl(struct uart_port *port, int break_state)
long status = hypervisor_con_putchar(CON_BREAK);
if (status == HV_EOK)
break;
udelay(2);
}
spin_unlock_irqrestore(&port->lock, flags);