diff options
Diffstat (limited to 'drivers/parport/share.c')
| -rw-r--r-- | drivers/parport/share.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/parport/share.c b/drivers/parport/share.c index 8059dfa22..fe5ea143b 100644 --- a/drivers/parport/share.c +++ b/drivers/parport/share.c @@ -247,7 +247,19 @@ void parport_announce_port (struct parport *port) { #ifdef CONFIG_PARPORT_1284 /* Analyse the IEEE1284.3 topology of the port. */ - parport_daisy_init (port); + if (parport_daisy_init (port) == 0) { + /* No devices were detected. Perhaps they are in some + funny state; let's try to reset them and see if + they wake up. */ + parport_daisy_fini (port); + parport_write_control (port, PARPORT_CONTROL_SELECT); + udelay (50); + parport_write_control (port, + PARPORT_CONTROL_SELECT | + PARPORT_CONTROL_INIT); + udelay (50); + parport_daisy_init (port); + } #endif /* Let drivers know that a new port has arrived. */ |