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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-19 01:32:22 +0100 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 10:13:38 +0100 |
| commit | 843dfb4d99c41116601694f314092b3b6c4511f4 (patch) | |
| tree | 44a5b1d757bb796466d0746d13d9fa4c49ad459a /drivers/serial/sunhv.c | |
| parent | [SPARC64]: Put sunhv.o earliest in the list of sparc serial drivers. (diff) | |
| download | linux-843dfb4d99c41116601694f314092b3b6c4511f4.tar.xz linux-843dfb4d99c41116601694f314092b3b6c4511f4.zip | |
[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>
Diffstat (limited to 'drivers/serial/sunhv.c')
| -rw-r--r-- | drivers/serial/sunhv.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c index 378a1784ce9a..8537839f9abb 100644 --- a/drivers/serial/sunhv.c +++ b/drivers/serial/sunhv.c @@ -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); |