static int ch341_reset_resume(struct usb_interface *intf)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct usb_serial *serial = NULL;
struct ch341_private *priv;
serial = usb_get_intfdata(intf);
priv = usb_get_serial_port_data(serial->port[0]);
/*reconfigure ch341 serial port after bus-reset*/
ch341_configure(dev, priv);
usb_serial_resume(intf);
return 0;
}
/*===========================================================================
METHOD:
GobiResume (Free Method)
DESCRIPTION:
Restart URBs killed during usb_serial_suspend
Fixes 2 bugs in 2.6.23 kernel
1. pSerial->type->resume was NULL and unchecked, caused crash.
2. set_to_generic_if_null was not run for resume.
PARAMETERS:
pIntf [ I ] - Pointer to interface
RETURN VALUE:
int - 0 for success
negative errno for failure
===========================================================================*/
int GobiResume( struct usb_interface * pIntf )
{
struct usb_serial * pSerial = usb_get_intfdata( pIntf );
struct usb_serial_port * pPort;
int portIndex, errors, nResult;
if (pSerial == NULL)
{
DBG( "no pSerial\n" );
return -ENOMEM;
}
if (pSerial->type == NULL)
{
DBG( "no pSerial->type\n" );
return ENOMEM;
}
if (pSerial->type->resume == NULL)
{
// Expected behaviour in 2.6.23, in later kernels this was handled
// by the usb-serial driver and usb_serial_generic_resume
errors = 0;
for (portIndex = 0; portIndex < pSerial->num_ports; portIndex++)
{
pPort = pSerial->port[portIndex];
if (pPort->open_count > 0 && pPort->read_urb != NULL)
{
nResult = usb_submit_urb( pPort->read_urb, GFP_NOIO );
if (nResult < 0)
{
// Return first error we see
DBG( "error %d\n", nResult );
return nResult;
}
}
}
// Success
return 0;
}
// Execution would only reach this point if user has
// patched version of usb-serial driver.
return usb_serial_resume( pIntf );
}
/* --SSD_RIL */
int usb_serial_reset_resume(struct usb_interface *intf)
{
pr_info("%s intf %p\n", __func__, intf);
return usb_serial_resume(intf);
}
