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OpenCloudOS-Kernel
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tty: Char: mxser, use THRE for ASPP_OQUEUE ioctl 

In moxa specific ASPP_OQUEUE ioctl command, they apparently want
only know whether there is space in transmitter hold register.

So switch UART_LSR_TEMT to UART_LSR_THRE in that specific case
according to the change in 1.14 moxa drivers.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jiri Slaby 2009-09-10 12:20:08 +02:00 committed by Live-CD User
parent 502f295f6c
commit a75b7b68ef
1 changed files with 1 additions and 1 deletions
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2
drivers/char/mxser.c
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@ -1806,7 +1806,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
lock_kernel();
len = mxser_chars_in_buffer(tty);
lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE;
len += (lsr ? 0 : 1);
unlock_kernel();