diff options
| author | Guido Kiener <[email protected]> | 2018-09-12 08:50:55 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2018-09-20 11:04:02 +0000 |
| commit | 46ecc9d54efc11bf99689901f867854d264cbc0b (patch) | |
| tree | 0aed4f5b315265e2f77d31ebc915055e04b75552 /drivers/usb/class/usbtmc.c | |
| parent | usb: usbtmc: Add ioctl for vendor specific read (diff) | |
| download | kernel-46ecc9d54efc11bf99689901f867854d264cbc0b.tar.gz kernel-46ecc9d54efc11bf99689901f867854d264cbc0b.zip | |
usb: usbtmc: Add ioctl USBTMC_IOCTL_CANCEL_IO
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 <[email protected]>
Reviewed-by: Steve Bayless <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/usb/class/usbtmc.c')
| -rw-r--r-- | drivers/usb/class/usbtmc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 45ccdd087d6f..0d8aa4bc3fa7 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -2126,6 +2126,10 @@ static long usbtmc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case USBTMC488_IOCTL_TRIGGER: retval = usbtmc488_ioctl_trigger(file_data); break; + + case USBTMC_IOCTL_CANCEL_IO: + retval = usbtmc_ioctl_cancel_io(file_data); + break; } skip_io_on_zombie: |