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hso: don't change the state of a closed port

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Don't change the state of a port if it's not open. This fixes an issue where a
port sometimes has to be opened twice before data can be received.

Signed-off-by: Jan Dumon <j.dumon@option.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jan Dumon 2010-01-05 04:51:28 +00:00 committed by David S. Miller
parent d9ced80d10
commit f4763e96c0
1 changed files with 5 additions and 5 deletions
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10
drivers/net/usb/hso.c
View file

@ -1915,18 +1915,18 @@ static void intr_callback(struct urb *urb)
if (serial != NULL) {
D1("Pending read interrupt on port %d\n", i);
spin_lock(&serial->serial_lock);
if (serial->rx_state == RX_IDLE) {
if (serial->rx_state == RX_IDLE &&
serial->open_count > 0) {
/* Setup and send a ctrl req read on
* port i */
if (!serial->rx_urb_filled[0]) {
if (!serial->rx_urb_filled[0]) {
serial->rx_state = RX_SENT;
hso_mux_serial_read(serial);
} else
serial->rx_state = RX_PENDING;
} else {
D1("Already pending a read on "
"port %d\n", i);
D1("Already a read pending on "
"port %d or port not open\n", i);
}
spin_unlock(&serial->serial_lock);
}