From: Frank Gevaerts Date: Fri, 30 Jun 2006 09:34:44 +0000 (-0700) Subject: [PATCH] USB: ipaq.c bugfixes X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b512504e5671f83638be0ddb085c4b1832f623d3;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git [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 ) Signed-off-by: Frank Gevaerts Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- 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);