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authorDavid P. Reed <dpreed@reed.com>2008-02-18 13:58:34 -0500
committerIngo Molnar <mingo@elte.hu>2008-04-17 17:40:48 +0200
commitbc0a733facbbde6c464e3ba5e165607fe4824cca (patch)
tree3bc466819d622975ea34a32dc6683afa07657df1 /Documentation/i386/boot.txt
parentc92a7a54d6579c9c01374092e7b61a6161f2ef70 (diff)
downloadlinux-bc0a733facbbde6c464e3ba5e165607fe4824cca.tar.bz2
x86: define outb_pic and inb_pic to stop using outb_p and inb_p
x86: define outb_pic and inb_pic to stop using outb_p and inb_p The delay between io port accesses to the PIC is now defined using outb_pic and inb_pic. This fix provides the next step, using udelay(2) to define the *PIC specific* timing requirements, rather than on bus-oriented timing, which is not well calibrated. Again, the primary reason for fixing this is to use proper delay strategy, and in particular to fix crashes that can result from using port 80 writes on machines that have resources on port 80, such as the ENE chips used by Quanta in latops it designs and sells to, e.g. HP. Signed-off-by: David P. Reed <dpreed@reed.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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