On Sat, 2005-12-31 at 21:58 +0100, Jan Engelhardt wrote:
> >Subject: Re: MPlayer broken under 2.6.15-rc7-rt1?
>
> I seriously demand that this be changed into "RTC broekn under..."! :)
Done ;)
[...]
> >
> >Index: linux-2.6.15-rc7-rt1/drivers/char/rtc.c
>
> This patch fixes the rtc BUG for me.
Yeah, attached is a program that does what mplayer does. I run it from
the command line like this:
# for i in `seq 10000`; do ./rtc_ioctl ; done
And with the patch it runs perfectly fine. Without it, it segfaults
several times.
-- Steve
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <linux/rtc.h>
#define RTC "/dev/rtc"
int main(int argc, char **argv)
{
int fd;
unsigned long data;
if ((fd = open(RTC, O_RDONLY)) < 0) {
perror(RTC);
exit(0);
}
ioctl(fd, RTC_IRQP_SET, 1024);
ioctl(fd, RTC_PIE_ON, 0);
read(fd, &data, sizeof(data));
printf("%08lx\n",data);
close (fd);
exit(0);
}
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