[lkml]   [2004]   [Apr]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    Subject[PATCH][RFC] sort out CLOCK_TICK_RATE usage [0/3]

    With every 2.6 kernel I tried the system speaker on my Alpha produces a
    rather unpleasant high pitched tone instead of the normal system beep.
    This is because in p|cspkr.c the calculation of the counter values is
    incorrectly based on CLOCK_TICK_RATE.
    To solve this problem I came up with these tree patches:

    1/3: introduce PIC_TICK_RATE constant. It seems this is not always
    the same value.
    2/3: use PIC_TICK_RATE in *spkr.c and some other places where the
    PIC is directly programmed.
    3/3: use CLOCK_TICK_RATE where 1193180 was used in timing calculations.

    Tested on Alpha, compile & boot-tested on i386 (unrelated LVM problems here)

    Arch maintainers please have a look whether I got the constants right or
    if your architecture has a PIC at all.

    Comments welcome.


    | Thorsten Kranzkowski Internet: |
    | Mobile: ++49 170 1876134 Snail: Kiebitzstr. 14, 49324 Melle, Germany |
    | Ampr:, [] |
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 14:02    [W:0.020 / U:5.656 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site