diff options
author | Jeff Garzik <jgarzik@pobox.com> | 2005-11-18 19:54:12 -0500 |
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committer | Jeff Garzik <jgarzik@pobox.com> | 2005-11-18 19:54:12 -0500 |
commit | 625876f32ed63af262db3d0ac8178d2c0f510636 (patch) | |
tree | 93a0d2d5332fa679ecb99eee7b0955e444d6a41a /drivers/serial/mux.c | |
parent | c902f981b79b512eb3d0c0410f8cae88c78beb57 (diff) | |
parent | b286e39207237e2f6929959372bf66d9a8d05a82 (diff) |
Merge branch 'master'
Diffstat (limited to 'drivers/serial/mux.c')
-rw-r--r-- | drivers/serial/mux.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/serial/mux.c b/drivers/serial/mux.c index 660bae5ba17..7633132a10a 100644 --- a/drivers/serial/mux.c +++ b/drivers/serial/mux.c @@ -65,8 +65,8 @@ static struct uart_driver mux_driver = { static struct timer_list mux_timer; -#define UART_PUT_CHAR(p, c) __raw_writel((c), (unsigned long)(p)->membase + IO_DATA_REG_OFFSET) -#define UART_GET_FIFO_CNT(p) __raw_readl((unsigned long)(p)->membase + IO_DCOUNT_REG_OFFSET) +#define UART_PUT_CHAR(p, c) __raw_writel((c), (p)->membase + IO_DATA_REG_OFFSET) +#define UART_GET_FIFO_CNT(p) __raw_readl((p)->membase + IO_DCOUNT_REG_OFFSET) #define GET_MUX_PORTS(iodc_data) ((((iodc_data)[4] & 0xf0) >> 4) * 8) + 8 /** @@ -79,10 +79,7 @@ static struct timer_list mux_timer; */ static unsigned int mux_tx_empty(struct uart_port *port) { - unsigned int cnt = __raw_readl((unsigned long)port->membase - + IO_DCOUNT_REG_OFFSET); - - return cnt ? 0 : TIOCSER_TEMT; + return UART_GET_FIFO_CNT(port) ? 0 : TIOCSER_TEMT; } /** @@ -218,8 +215,7 @@ static void mux_read(struct uart_port *port) __u32 start_count = port->icount.rx; while(1) { - data = __raw_readl((unsigned long)port->membase - + IO_DATA_REG_OFFSET); + data = __raw_readl(port->membase + IO_DATA_REG_OFFSET); if (MUX_STATUS(data)) continue; @@ -481,6 +477,13 @@ static int __init mux_probe(struct parisc_device *dev) port->ops = &mux_pops; port->flags = UPF_BOOT_AUTOCONF; port->line = port_cnt; + + /* The port->timeout needs to match what is present in + * uart_wait_until_sent in serial_core.c. Otherwise + * the time spent in msleep_interruptable will be very + * long, causing the appearance of a console hang. + */ + port->timeout = HZ / 50; spin_lock_init(&port->lock); status = uart_add_one_port(&mux_driver, port); BUG_ON(status); |