libusb20.3 (274496044deb7b60c6396b0571c1b8ceb2f38d7a) libusb20.3 (4d2472aa7bc90cbd437975f90cd2da0ba1b1f534)
1.\"
2.\" Copyright (c) 2008 Hans Petter Selasky
3.\"
4.\" All rights reserved.
5.\"
6.\" Redistribution and use in source and binary forms, with or without
7.\" modification, are permitted provided that the following conditions
8.\" are met:

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609.
610A negative value is returned when no file descriptor is present.
611.
612The file descriptor can be used for polling purposes.
613.
614.Pp
615.
616.Fn libusb20_dev_kernel_driver_active
1.\"
2.\" Copyright (c) 2008 Hans Petter Selasky
3.\"
4.\" All rights reserved.
5.\"
6.\" Redistribution and use in source and binary forms, with or without
7.\" modification, are permitted provided that the following conditions
8.\" are met:

--- 600 unchanged lines hidden (view full) ---

609.
610A negative value is returned when no file descriptor is present.
611.
612The file descriptor can be used for polling purposes.
613.
614.Pp
615.
616.Fn libusb20_dev_kernel_driver_active
617returns a non-zero value if a kernel driver is active on
618the given USB interface.
617returns zero if a kernel driver is active on the given USB interface.
619.
618.
620Else zero is returned.
619Else a LIBUSB20_ERROR value is returned.
621.
622.Pp
623.
624.Fn libusb20_dev_open
625opens an USB device so that setting up USB transfers
626becomes possible.
627.
628The number of USB transfers can be zero which means only control

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621.Pp
622.
623.Fn libusb20_dev_open
624opens an USB device so that setting up USB transfers
625becomes possible.
626.
627The number of USB transfers can be zero which means only control

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