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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-10-23 13:24:10 (GMT) |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-10-23 13:24:10 (GMT) |
| commit | d9214556b11a8d18ff588e60824c12041d30f791 (patch) | |
| tree | 04ab59d13961675811a55c96fb12b2b167b72318 /arch/s390/lib/delay.c | |
| parent | 72a1419a9d4c859a3345e4b83f8ef7d599d3818c (diff) | |
| parent | e82c6106b04b85879d802bbbeaed30d9b10a92e2 (diff) | |
| download | linux-d9214556b11a8d18ff588e60824c12041d30f791.tar.xz | |
Merge branches 'boards' and 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
Diffstat (limited to 'arch/s390/lib/delay.c')
| -rw-r--r-- | arch/s390/lib/delay.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c index 0953cee..6ccb9fa 100644 --- a/arch/s390/lib/delay.c +++ b/arch/s390/lib/delay.c @@ -92,3 +92,16 @@ out: local_irq_restore(flags); preempt_enable(); } + +/* + * Simple udelay variant. To be used on startup and reboot + * when the interrupt handler isn't working. + */ +void udelay_simple(unsigned long usecs) +{ + u64 end; + + end = get_clock() + ((u64) usecs << 12); + while (get_clock() < end) + cpu_relax(); +} |