usb: usbtmc: Add ioctl USBTMC_IOCTL_CANCEL_IO

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ioctl USBTMC_IOCTL_CANCEL_IO stops and kills all flying urbs of
last USBTMC_IOCTL_READ and USBTMC_IOCTL_WRITE function calls.
A subsequent call to USBTMC_IOCTL_READ or
USBTMC_IOCTL_WRITE_RESULT returns -ECANCELED with
information about current transferred data.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Guido Kiener 2018-09-12 10:50:55 +02:00 • committed by Greg Kroah-Hartman

parent bb99794a47

commit 46ecc9d54e

2 changed files with 7 additions and 0 deletions

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include/uapi/linux/usb/tmc.h

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