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Don't call init if an error is returned

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This commit is contained in:
Kristian Sloth Lauszus 2013-10-08 18:07:36 +02:00
parent 332f56f46d
commit 7990c32ad6
1 changed files with 16 additions and 15 deletions
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31
Usb.cpp
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@ -580,23 +580,24 @@ uint8_t USB::AttemptConfig(uint8_t driver, uint8_t parent, uint8_t port, bool lo
devConfig[parent]->ResetHubPort(port);
}
}
rcode = devConfig[driver]->Init(parent, port, lowspeed);
if (rcode == hrJERR) { // Some devices returns this when plugged in - trying to initialize the device again usually works
delay(100);
devConfig[driver]->ConfigureDevice(parent, port, lowspeed); // Just ignore the returned value
if (!rcode || rcode == USB_ERROR_CONFIG_REQUIRES_ADDITIONAL_RESET) {
rcode = devConfig[driver]->Init(parent, port, lowspeed);
}
if (rcode) {
// Issue a bus reset, because the device may be in a limbo state
if (parent == 0) {
// Send a bus reset on the root interface.
regWr(rHCTL, bmBUSRST); //issue bus reset
delay(102); // delay 102ms, compensate for clock inaccuracy.
} else {
// reset parent port
devConfig[parent]->ResetHubPort(port);
if (rcode == hrJERR) { // Some devices returns this when plugged in - trying to initialize the device again usually works
delay(100);
devConfig[driver]->ConfigureDevice(parent, port, lowspeed); // Just ignore the returned value
rcode = devConfig[driver]->Init(parent, port, lowspeed);
}
if (rcode) {
// Issue a bus reset, because the device may be in a limbo state
if (parent == 0) {
// Send a bus reset on the root interface.
regWr(rHCTL, bmBUSRST); //issue bus reset
delay(102); // delay 102ms, compensate for clock inaccuracy.
} else {
// reset parent port
devConfig[parent]->ResetHubPort(port);
}
}
}
return rcode;
}