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tty: Fix the PL2303 private methods for sysrq

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PL2303 has private data shovelling methods that also have no fast path. Fix
them to work the same way as the default handler.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2009-07-09 13:36:58 +01:00 committed by Linus Torvalds
parent 24a15a62dc
commit d4fc4a7bfc
1 changed files with 33 additions and 25 deletions
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58
drivers/usb/serial/pl2303.c
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@ -971,18 +971,46 @@ exit:
__func__, retval);
}
static void pl2303_push_data(struct tty_struct *tty,
struct usb_serial_port *port, struct urb *urb,
u8 line_status)
{
unsigned char *data = urb->transfer_buffer;
/* get tty_flag from status */
char tty_flag = TTY_NORMAL;
/* break takes precedence over parity, */
/* which takes precedence over framing errors */
if (line_status & UART_BREAK_ERROR)
tty_flag = TTY_BREAK;
else if (line_status & UART_PARITY_ERROR)
tty_flag = TTY_PARITY;
else if (line_status & UART_FRAME_ERROR)
tty_flag = TTY_FRAME;
dbg("%s - tty_flag = %d", __func__, tty_flag);
tty_buffer_request_room(tty, urb->actual_length + 1);
/* overrun is special, not associated with a char */
if (line_status & UART_OVERRUN_ERROR)
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
if (port->console && port->sysrq) {
int i;
for (i = 0; i < urb->actual_length; ++i)
if (!usb_serial_handle_sysrq_char(tty, port, data[i]))
tty_insert_flip_char(tty, data[i], tty_flag);
} else
tty_insert_flip_string(tty, data, urb->actual_length);
tty_flip_buffer_push(tty);
}
static void pl2303_read_bulk_callback(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
struct pl2303_private *priv = usb_get_serial_port_data(port);
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
unsigned long flags;
int i;
int result;
int status = urb->status;
u8 line_status;
char tty_flag;
dbg("%s - port %d", __func__, port->number);
@ -1010,10 +1038,7 @@ static void pl2303_read_bulk_callback(struct urb *urb)
}
usb_serial_debug_data(debug, &port->dev, __func__,
urb->actual_length, data);
/* get tty_flag from status */
tty_flag = TTY_NORMAL;
urb->actual_length, urb->transfer_buffer);
spin_lock_irqsave(&priv->lock, flags);
line_status = priv->line_status;
@ -1021,26 +1046,9 @@ static void pl2303_read_bulk_callback(struct urb *urb)
spin_unlock_irqrestore(&priv->lock, flags);
wake_up_interruptible(&priv->delta_msr_wait);
/* break takes precedence over parity, */
/* which takes precedence over framing errors */
if (line_status & UART_BREAK_ERROR)
tty_flag = TTY_BREAK;
else if (line_status & UART_PARITY_ERROR)
tty_flag = TTY_PARITY;
else if (line_status & UART_FRAME_ERROR)
tty_flag = TTY_FRAME;
dbg("%s - tty_flag = %d", __func__, tty_flag);
tty = tty_port_tty_get(&port->port);
if (tty && urb->actual_length) {
tty_buffer_request_room(tty, urb->actual_length + 1);
/* overrun is special, not associated with a char */
if (line_status & UART_OVERRUN_ERROR)
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
for (i = 0; i < urb->actual_length; ++i)
if (!usb_serial_handle_sysrq_char(tty, port, data[i]))
tty_insert_flip_char(tty, data[i], tty_flag);
tty_flip_buffer_push(tty);
pl2303_push_data(tty, port, urb, line_status);
}
tty_kref_put(tty);
/* Schedule the next read _if_ we are still open */