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bbl.c (main): open /dev/mem with O_SYNC to disable caching
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@ -1,7 +1,7 @@
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/*
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* bbl.c - Produce a "Knight Rider" effect on the LED board
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*
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* Written 2010 by Werner Almesberger <werner@openmoko.org>
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* Written 2010-2011 by Werner Almesberger <werner@openmoko.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -98,7 +98,7 @@ int main(int argc, char **argv)
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{
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int fd, i;
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fd = open("/dev/mem", O_RDWR);
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fd = open("/dev/mem", O_RDWR | O_SYNC);
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if (fd < 0) {
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perror("/dev/mem");
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exit(1);
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