Re: Patch - sharing RTC timer between kernel and user space

From: Roman Zippel (zippel@linux-m68k.org)
Date: Thu Feb 28 2002 - 09:43:05 EST

Hi,

On Thu, 28 Feb 2002, Jaroslav Kysela wrote:

> Using the RTC timer is optional. The default timer is system timer, of
> course.

Who is setting up this timer? This patch can also be done in userspace:

        fd = open("/dev/rtc",...);
        ioctl(alsafd, RTCFD, fd);

in the alsa driver you can do:

        file = fget(fd);
        ...
        if (file->f_op && file->f_op->ioctl)
                file->f_op->ioctl(file->f_dentry->d_inode, file, cmd, arg);
        ...
        fput(file);

bye, Roman

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This archive was generated by hypermail 2b29 : Thu Feb 28 2002 - 21:00:42 EST