From cd1e098b5a57f218322c34d6bf0e2dbea26dc85e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 26 Jun 2013 16:47:41 +0200 Subject: [PATCH] USB: ti_usb_3410_5052: kill private fifo Kill private write fifo and use the already allocated port write fifo instead. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ti_usb_3410_5052.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 18db7b3e52b7..d2c6196ca46e 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -45,8 +45,6 @@ #define TI_FIRMWARE_BUF_SIZE 16284 -#define TI_WRITE_BUF_SIZE 1024 - #define TI_TRANSFER_TIMEOUT 2 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ @@ -77,7 +75,6 @@ struct ti_port { spinlock_t tp_lock; int tp_read_urb_state; int tp_write_urb_in_use; - struct kfifo write_fifo; }; struct ti_device { @@ -431,10 +428,6 @@ static int ti_port_probe(struct usb_serial_port *port) tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; port->port.closing_wait = msecs_to_jiffies(10 * closing_wait); init_waitqueue_head(&tport->tp_write_wait); - if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, GFP_KERNEL)) { - kfree(tport); - return -ENOMEM; - } tport->tp_port = port; tport->tp_tdev = usb_get_serial_data(port->serial); tport->tp_uart_mode = 0; /* default is RS232 */ @@ -451,7 +444,6 @@ static int ti_port_remove(struct usb_serial_port *port) struct ti_port *tport; tport = usb_get_serial_port_data(port); - kfifo_free(&tport->write_fifo); kfree(tport); return 0; @@ -616,7 +608,7 @@ static void ti_close(struct usb_serial_port *port) usb_kill_urb(port->write_urb); tport->tp_write_urb_in_use = 0; spin_lock_irqsave(&tport->tp_lock, flags); - kfifo_reset_out(&tport->write_fifo); + kfifo_reset_out(&port->write_fifo); spin_unlock_irqrestore(&tport->tp_lock, flags); port_number = port->port_number; @@ -655,7 +647,7 @@ static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, if (tport == NULL || !tport->tp_is_open) return -ENODEV; - count = kfifo_in_locked(&tport->write_fifo, data, count, + count = kfifo_in_locked(&port->write_fifo, data, count, &tport->tp_lock); ti_send(tport); @@ -674,7 +666,7 @@ static int ti_write_room(struct tty_struct *tty) return 0; spin_lock_irqsave(&tport->tp_lock, flags); - room = kfifo_avail(&tport->write_fifo); + room = kfifo_avail(&port->write_fifo); spin_unlock_irqrestore(&tport->tp_lock, flags); dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); @@ -693,7 +685,7 @@ static int ti_chars_in_buffer(struct tty_struct *tty) return 0; spin_lock_irqsave(&tport->tp_lock, flags); - chars = kfifo_len(&tport->write_fifo); + chars = kfifo_len(&port->write_fifo); spin_unlock_irqrestore(&tport->tp_lock, flags); dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); @@ -1197,7 +1189,7 @@ static void ti_send(struct ti_port *tport) if (tport->tp_write_urb_in_use) goto unlock; - count = kfifo_out(&tport->write_fifo, + count = kfifo_out(&port->write_fifo, port->write_urb->transfer_buffer, port->bulk_out_size); @@ -1312,7 +1304,7 @@ static int ti_get_serial_info(struct ti_port *tport, ret_serial.line = port->minor; ret_serial.port = port->port_number; ret_serial.flags = tport->tp_flags; - ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE; + ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo); ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; ret_serial.closing_wait = cwait; -- 2.34.1