[Bugme-janitors] [Bug 7014] New: rtc doesn't generate updates on T60p

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Wed Aug 16 12:20:36 PDT 2006


http://bugzilla.kernel.org/show_bug.cgi?id=7014

           Summary: rtc doesn't generate updates on T60p
    Kernel Version: 2.6.17.8
            Status: NEW
          Severity: normal
             Owner: timers_realtime-clock at kernel-bugs.osdl.org
         Submitter: jlquinn at us.ibm.com


Most recent kernel where this bug did not occur:
Distribution: Debian testing
Hardware Environment: IBM T60p
Software Environment:
Problem Description:

Trying to read from /dev/rtc blocks indefinitely.  If I use the simple test
program in rtc.txt.gz, it hangs on the read and never returns.  The program
appears to turn on update interrupts, before reading.

I see the same problem in Debian's latest 2.6.16 and a vanilla 2.6.18-rc4 kernel.

Steps to reproduce:
fd = open("/dev/rtc", O_RDONLY);
ioctl(fd, RTC_UIE_ON, 0);
read(fd, &data, sizeof(unsigned long));

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