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Kernel attach and bulk fixes #23

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Kernel attach and bulk fixes #23

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bd5174d
Allow device to separatelly attach/detach interface from kernel driver
Jun 2, 2023
a6f0dae
Fixed USBDevice read locked after interfaces attach/detach
Jun 2, 2023
5c554cc
Handled usb bulk out transferts of wMaxPacketSize multiple
Aug 16, 2023
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Fixed USBDevice read locked after interfaces attach/detach
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TREFOU Felix authored and Felix TREFOU committed Mar 31, 2025
commit a6f0daef74a3ade65fe75c404b134aa0abef49db
20 changes: 20 additions & 0 deletions src/main/java/org/usb4java/javax/AbstractDevice.java
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Original file line number Diff line number Diff line change
Expand Up @@ -248,6 +248,14 @@ public final void close()
}
}

public final void reset()
{
if (this.handle != null)
{
LibUsb.resetDevice(this.handle);
}
}

@Override
public final UsbPort getParentUsbPort()
{
Expand Down Expand Up @@ -400,6 +408,12 @@ final void setActiveUsbConfigurationNumber(final byte number)
final void claimInterface(final byte number, final boolean force)
throws UsbException
{
if(this.claimedInterfaceNumbers.isEmpty()) {
// This prevent a libus bug where async read could lock
// forever after a full released interfaces
reset();
}

if (this.claimedInterfaceNumbers.contains(number))
throw new UsbClaimException("An interface is already claimed");

Expand Down Expand Up @@ -468,6 +482,12 @@ final void releaseInterface(final byte number) throws UsbException
}

this.claimedInterfaceNumbers.remove(number);

if(this.claimedInterfaceNumbers.isEmpty()) {
// This prevent a libus bug where async read could lock
// forever after a full released interfaces
reset();
}
}

/**
Expand Down