Am Montag, den 28.05.2018, 10:59 +0000 schrieb guido@kiener-
muenchen.de:
> > No, the problem is that you will underflow io->mutex
> >
>
> Don't worry. The function usbtmc488_ioctl_wait_srq is called by
> usbtmc_ioctl which already locks the mutex. See
> https://elixir.bootlin.com/linux/v4.17-rc7/source/drivers/usb/class/usbtmc.c#L1189
> So the mutex is just unlocked here to allow other threads to still communicate
> with the device.
Hi,
thanks I had overlooked that.
Regards
Oliver
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