i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

If device allocation fails, retry the attach process, i.e. reset and initialize

Browse Source 
the device again. Makes Axel's USB stick work and might also help with other
(broken) devices.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36234 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz
2010-04-13 18:26:26 +00:00
parent a1b2e9e959
commit 696914f907
1 changed files with 51 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/add-ons/kernel/bus_managers/usb/Hub.cpp
+15 -10
View File
@@ -218,6 +218,8 @@ Hub::Explore(change_item **changeList)
// new device attached!
TRACE_ALWAYS("port %ld: new device connected\n", i);
int32 retry = 2;
while (retry--) {
// wait some time for the device to power up
snooze(USB_DELAY_DEVICE_POWER_UP);
@@ -225,21 +227,22 @@ Hub::Explore(change_item **changeList)
result = ResetPort(i);
if (result < B_OK) {
TRACE_ERROR("resetting port %ld failed\n", i);
continue;
break;
}
result = UpdatePortStatus(i);
if (result < B_OK)
continue;
break;
if ((fPortStatus[i].status & PORT_STATUS_CONNECTION) == 0) {
// device has vanished after reset, ignore
TRACE("device disappeared on reset\n");
continue;
break;
}
if (fChildren[i] != NULL) {
TRACE_ERROR("new device on a port that is already in use\n");
TRACE_ERROR("new device on a port that is already in "
"use\n");
fChildren[i]->Changed(changeList, false);
fChildren[i] = NULL;
}
@@ -251,9 +254,9 @@ Hub::Explore(change_item **changeList)
speed = USB_SPEED_HIGHSPEED;
// either let the device inherit our addresses (if we are
// already potentially using a transaction translator) or set
// ourselfs as the hub when we might become the transaction
// translator for the device.
// already potentially using a transaction translator) or
// set ourselfs as the hub when we might become the
// transaction translator for the device.
int8 hubAddress = HubAddress();
uint8 hubPort = HubPort();
if (Speed() == USB_SPEED_HIGHSPEED) {
@@ -267,12 +270,14 @@ Hub::Explore(change_item **changeList)
if (newDevice) {
newDevice->Changed(changeList, true);
fChildren[i] = newDevice;
break;
} else {
// the device failed to setup correctly, disable the port
// so that the device doesn't get in the way of future
// addressing.
// the device failed to setup correctly, disable the
// port so that the device doesn't get in the way of
// future addressing.
DisablePort(i);
}
}
} else {
// Device removed...
TRACE_ALWAYS("port %ld: device removed\n", i);