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USB: f81232: remove bogus call to wake up MSR queue

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Remove bogus call to wake up delta_msr_wait from process_read_urb where
the MSR status is never updated (only the LSR bits are masked out).

Comment that the wake-up call should made in f81232_update_line_status
when the MSR status changes.

Note that this driver is still mostly stubbed out.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-12-29 19:22:57 +01:00 committed by Greg Kroah-Hartman
parent 10c642d077
commit 49fabf2986
1 changed files with 7 additions and 1 deletions
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8
drivers/usb/serial/f81232.c
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@ -55,6 +55,13 @@ static void f81232_update_line_status(struct usb_serial_port *port,
unsigned char *data,
unsigned int actual_length)
{
/*
* FIXME: Call
*
* wake_up_interruptible(&port->port.delta_msr_wait);
*
* on MSR changes.
*/
}
static void f81232_read_int_callback(struct urb *urb)
@ -110,7 +117,6 @@ static void f81232_process_read_urb(struct urb *urb)
line_status = priv->line_status;
priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
spin_unlock_irqrestore(&priv->lock, flags);
wake_up_interruptible(&port->port.delta_msr_wait);
if (!urb->actual_length)
return;