Date: Tue, 11 Aug 2009 08:58:41 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: Krassimir Slavchev <krassi@bulinfo.net> Cc: freebsd-hackers@freebsd.org Subject: Re: Help with device drivers Message-ID: <200908110858.41835.hselasky@c2i.net> In-Reply-To: <4A810A62.1070408@bulinfo.net> References: <4A8006F3.5020800@bulinfo.net> <200908101527.32952.hselasky@c2i.net> <4A810A62.1070408@bulinfo.net>
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On Tuesday 11 August 2009 08:06:26 Krassimir Slavchev wrote:
> Hans Petter Selasky wrote:
> > On Monday 10 August 2009 13:39:31 Krassimir Slavchev wrote:
> >> If I try to open the device from userland with:
> >> fd = open("/dev/xxx0", O_RDWR) it fails because open() tries to open the
> >> device for reading first and then for writing.
> >
> > There is a bug in the code. If you open using read+write flags, then the
> > FIFO open routine is called two times. The RD+WR check should be moved to
> > the ioctl routine.
> >
> > http://perforce.freebsd.org/chv.cgi?CH=167171
>
> Thanks!
>
> It seems that sys/dev/usb/storage/urio.c should be fixed too?
>
> Best Regards
>
> > --HPS
You are right!
http://perforce.freebsd.org/chv.cgi?CH=167199
--HPS
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