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author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-13 21:28:40 -0800 |
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committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:12:46 -0800 |
commit | d5a2aa241aa0babf382d42d6033b30a5112e4c1e (patch) | |
tree | 64b0ffb5b321827be583de8167f5f80f0befdb33 /drivers | |
parent | 5259d5bfaf5b2953b130e9a500277a905bd37823 (diff) | |
download | kernel_samsung_espresso10-d5a2aa241aa0babf382d42d6033b30a5112e4c1e.zip kernel_samsung_espresso10-d5a2aa241aa0babf382d42d6033b30a5112e4c1e.tar.gz kernel_samsung_espresso10-d5a2aa241aa0babf382d42d6033b30a5112e4c1e.tar.bz2 |
[SPARC64] sunhv: Bug fixes.
Add udelay to polling console write loop, and increment
the loop limit.
Name the device "ttyHV" and pass that to add_preferred_console()
when we're using hypervisor console.
Kill sunhv_console_setup(), it's empty.
Handle the case where we don't want to use hypervisor console.
(ie. we have a head attached to a sun4v machine)
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/serial/sunhv.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c index d3a9dd7..71c70d7 100644 --- a/drivers/serial/sunhv.c +++ b/drivers/serial/sunhv.c @@ -360,7 +360,7 @@ static struct uart_port *sunhv_port; static inline void sunhv_console_putchar(struct uart_port *port, char c) { unsigned long flags; - int limit = 10000; + int limit = 1000000; spin_lock_irqsave(&port->lock, flags); @@ -368,6 +368,7 @@ static inline void sunhv_console_putchar(struct uart_port *port, char c) long status = hypervisor_con_putchar(c); if (status == HV_EOK) break; + udelay(2); } spin_unlock_irqrestore(&port->lock, flags); @@ -385,28 +386,23 @@ static void sunhv_console_write(struct console *con, const char *s, unsigned n) } } -static int sunhv_console_setup(struct console *con, char *options) -{ - return 0; -} - static struct console sunhv_console = { - .name = "ttyS", + .name = "ttyHV", .write = sunhv_console_write, .device = uart_console_device, - .setup = sunhv_console_setup, .flags = CON_PRINTBUFFER, .index = -1, .data = &sunhv_reg, }; -static void __init sunhv_console_init(void) +static inline struct console *SUNHV_CONSOLE(void) { if (con_is_present()) - return; + return NULL; sunhv_console.index = 0; - register_console(&sunhv_console); + + return &sunhv_console; } static int __init hv_console_compatible(char *buf, int len) @@ -496,7 +492,6 @@ static int __init sunhv_init(void) sunhv_reg.minor = sunserial_current_minor; sunhv_reg.nr = 1; - sunhv_reg.cons = &sunhv_console; ret = uart_register_driver(&sunhv_reg); if (ret < 0) { @@ -506,11 +501,11 @@ static int __init sunhv_init(void) return ret; } - sunhv_port = port; - sunserial_current_minor += 1; - sunhv_console_init(); + sunhv_reg.cons = SUNHV_CONSOLE(); + + sunhv_port = port; uart_add_one_port(&sunhv_reg, port); |