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usb-serial: possible irq lock inversion (PPP vs. usb/serial)

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=========================================================
[ INFO: possible irq lock inversion dependency detected ]
This commit is contained in:
Peter Zijlstra
2006-09-25 12:51:41 +02:00
committed by Greg Kroah-Hartman
parent 2e3a43f0b6
commit e81ee637e4
7 changed files with 21 additions and 21 deletions
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6
drivers/usb/serial/safe_serial.c
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@@ -298,14 +298,14 @@ static int safe_write (struct usb_serial_port *port, const unsigned char *buf, i
dbg ("%s - write request of 0 bytes", __FUNCTION__);
return (0);
}
spin_lock(&port->lock);
spin_lock_bh(&port->lock);
if (port->write_urb_busy) {
spin_unlock(&port->lock);
spin_unlock_bh(&port->lock);
dbg("%s - already writing", __FUNCTION__);
return 0;
}
port->write_urb_busy = 1;
spin_unlock(&port->lock);
spin_unlock_bh(&port->lock);
packet_length = port->bulk_out_size; // get max packetsize