diff options
Diffstat (limited to 'drivers/usb/serial/keyspan_pda.c')
-rw-r--r-- | drivers/usb/serial/keyspan_pda.c | 53 |
1 files changed, 37 insertions, 16 deletions
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index 84f08e9..185fe9a 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -125,7 +125,7 @@ struct keyspan_pda_private { #define ENTREGRA_VENDOR_ID 0x1645 #define ENTREGRA_FAKE_ID 0x8093 -static struct usb_device_id id_table_combined [] = { +static const struct usb_device_id id_table_combined[] = { #ifdef KEYSPAN { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, #endif @@ -147,20 +147,20 @@ static struct usb_driver keyspan_pda_driver = { .no_dynamic_id = 1, }; -static struct usb_device_id id_table_std [] = { +static const struct usb_device_id id_table_std[] = { { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, { } /* Terminating entry */ }; #ifdef KEYSPAN -static struct usb_device_id id_table_fake [] = { +static const struct usb_device_id id_table_fake[] = { { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, { } /* Terminating entry */ }; #endif #ifdef XIRCOM -static struct usb_device_id id_table_fake_xircom [] = { +static const struct usb_device_id id_table_fake_xircom[] = { { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, { } @@ -429,13 +429,20 @@ static int keyspan_pda_get_modem_info(struct usb_serial *serial, unsigned char *value) { int rc; - unsigned char data; + u8 *data; + + data = kmalloc(1, GFP_KERNEL); + if (!data) + return -ENOMEM; + rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 3, /* get pins */ USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN, - 0, 0, &data, 1, 2000); + 0, 0, data, 1, 2000); if (rc >= 0) - *value = data; + *value = *data; + + kfree(data); return rc; } @@ -543,7 +550,14 @@ static int keyspan_pda_write(struct tty_struct *tty, device how much room it really has. This is done only on scheduler time, since usb_control_msg() sleeps. */ if (count > priv->tx_room && !in_interrupt()) { - unsigned char room; + u8 *room; + + room = kmalloc(1, GFP_KERNEL); + if (!room) { + rc = -ENOMEM; + goto exit; + } + rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 6, /* write_room */ @@ -551,9 +565,14 @@ static int keyspan_pda_write(struct tty_struct *tty, | USB_DIR_IN, 0, /* value: 0 means "remaining room" */ 0, /* index */ - &room, + room, 1, 2000); + if (rc > 0) { + dbg(" roomquery says %d", *room); + priv->tx_room = *room; + } + kfree(room); if (rc < 0) { dbg(" roomquery failed"); goto exit; @@ -563,8 +582,6 @@ static int keyspan_pda_write(struct tty_struct *tty, rc = -EIO; /* device didn't return any data */ goto exit; } - dbg(" roomquery says %d", room); - priv->tx_room = room; } if (count > priv->tx_room) { /* we're about to completely fill the Tx buffer, so @@ -684,18 +701,22 @@ static int keyspan_pda_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; - unsigned char room; + u8 *room; int rc = 0; struct keyspan_pda_private *priv; /* find out how much room is in the Tx ring */ + room = kmalloc(1, GFP_KERNEL); + if (!room) + return -ENOMEM; + rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 6, /* write_room */ USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_IN, 0, /* value */ 0, /* index */ - &room, + room, 1, 2000); if (rc < 0) { @@ -708,8 +729,8 @@ static int keyspan_pda_open(struct tty_struct *tty, goto error; } priv = usb_get_serial_port_data(port); - priv->tx_room = room; - priv->tx_throttled = room ? 0 : 1; + priv->tx_room = *room; + priv->tx_throttled = *room ? 0 : 1; /*Start reading from the device*/ port->interrupt_in_urb->dev = serial->dev; @@ -718,8 +739,8 @@ static int keyspan_pda_open(struct tty_struct *tty, dbg("%s - usb_submit_urb(read int) failed", __func__); goto error; } - error: + kfree(room); return rc; } static void keyspan_pda_close(struct usb_serial_port *port) |