From 49fabf29869c9c21f4d7243fa5b2b9ebc3890a85 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 29 Dec 2013 19:22:57 +0100 Subject: [PATCH] USB: f81232: remove bogus call to wake up MSR queue 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 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/f81232.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index aeb2edca1ce6..42c55601b4c9 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -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; -- 2.20.1