diff options
| author | Frank Gevaerts <frank.gevaerts@fks.be> | 2006-06-30 02:34:44 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-07-12 16:03:23 -0700 |
| commit | b512504e5671f83638be0ddb085c4b1832f623d3 (patch) | |
| tree | 188ea620ae1b8926caf6eeb28e42f4f5375d8753 /drivers/usb/serial/ipaq.c | |
| parent | b972b68c396cfa9f8af7e0b314e22705251bc218 (diff) | |
| download | linux-b512504e5671f83638be0ddb085c4b1832f623d3.tar.gz linux-b512504e5671f83638be0ddb085c4b1832f623d3.tar.bz2 linux-b512504e5671f83638be0ddb085c4b1832f623d3.zip | |
[PATCH] USB: ipaq.c bugfixes
This patch fixes several problems in the ipaq.c driver with connecting
and disconnecting pocketpc devices:
* The read urb stayed active if the connect failed, causing nullpointer
dereferences later on.
* If a write failed, the driver continued as if nothing happened. Now it
handles that case the same way as other usb serial devices (fix by
Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>)
Signed-off-by: Frank Gevaerts <frank.gevaerts@fks.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/ipaq.c')
| -rw-r--r-- | drivers/usb/serial/ipaq.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index dbcfe172a5cc..c021905f0637 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -651,11 +651,6 @@ static int ipaq_open(struct usb_serial_port *port, struct file *filp) usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, ipaq_read_bulk_callback, port); - result = usb_submit_urb(port->read_urb, GFP_KERNEL); - if (result) { - err("%s - failed submitting read urb, error %d", __FUNCTION__, result); - goto error; - } /* * Send out control message observed in win98 sniffs. Not sure what @@ -670,6 +665,11 @@ static int ipaq_open(struct usb_serial_port *port, struct file *filp) usb_sndctrlpipe(serial->dev, 0), 0x22, 0x21, 0x1, 0, NULL, 0, 100); if (result == 0) { + result = usb_submit_urb(port->read_urb, GFP_KERNEL); + if (result) { + err("%s - failed submitting read urb, error %d", __FUNCTION__, result); + goto error; + } return 0; } } @@ -854,6 +854,7 @@ static void ipaq_write_bulk_callback(struct urb *urb, struct pt_regs *regs) if (urb->status) { dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); + return; } spin_lock_irqsave(&write_list_lock, flags); |