<br><font size=2 face="sans-serif">The system is Embeded Linux with kernel
2.6.14. And the CPU is MPC8270 of freescale. The rtc module is &quot;Generic
/dev/rtc emulation&quot; and &quot;Extended RTC operation&quot;. And the
chip of rtc is ds1338 with the interface of i2c. The module of i2c has
been included.</font>
<br>
<br><font size=2 face="sans-serif">When i enable the dcache of mpc8270
and use &quot;hwclock --hctosys&quot; or &quot;hwclock --show&quot;, the
system will down. But if i disable dcache, it is ok. </font>
<br><font size=2 face="sans-serif">I found that when it call <b>schedule_work(&amp;genrtc_task)
</b>in the function &quot;static inline int gen_set_rtc_irq_bit(unsigned
char bit)&quot; in file genrtc.c it will down.</font>
<br>
<br><font size=2 face="sans-serif">Can you help me? </font>
<br>
<br><font size=2 face="sans-serif">Thanks.</font>
<br><font size=2 face="sans-serif">Leo</font>
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