Some people are having problems with insert/eject. Add some debug

information until the problems can be tracked down.  Right now these
are unconditional, but later it will be hidden behind a boot verbose.

Also, if there are no events listed in the event mask, return right
away.  Specifically avoid writing back interrupt acks in this case.

1 files changed, 4 insertions, 0 deletions

diff --git a/sys/pccard/pcic_pci.c b/sys/pccard/pcic_pci.c
index 132c838..cddb574 100644
--- a/sys/pccard/pcic_pci.c
+++ b/sys/pccard/pcic_pci.c
@@ -311,6 +311,7 @@ pcic_cd_event(void *arg)
 	u_int32_t stat;
 	
 	stat = bus_space_read_4(sp->bst, sp->bsh, CB_SOCKET_STATE);
+	device_printf(sc->dev, "debounced state is 0x%x\n", stat);
 	if ((stat & CB_SS_16BIT) == 0) {
 		device_printf(sp->sc->dev, "Unsupported card type inserted\n");
 	} else {
@@ -330,6 +331,9 @@ pcic_pci_intr(void *arg)
 	u_int32_t event;
 
 	event = bus_space_read_4(sp->bst, sp->bsh, CB_SOCKET_EVENT);
+	if (event == 0)
+		return;
+	device_printf(sc->dev, "Event mask 0x%x\n", event);
 	if (event & CB_SE_CD) {
 		if (!sc->cd_pending) {
 			sc->cd_pending = 1;