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SubjectRE: Kernel-2.6.22 ntp bug
Another option is to change all the drivers to be interrupts safe  


-----Original Message-----
From: Hanoch Haim (hhaim)
Sent: Monday, September 22, 2008 12:07 PM
Cc:; Hanoch Haim (hhaim)
Subject: Kernel-2.6.22 ntp bug
Hi All, I'm new to this mailing list.

I think there is a bug in the kernel/time/ntp.c

The code call to the function update_persistent_clock(struct timespec
now); the driver below might be implement with i2c (driver of rtc )
which is not interrupt safe.

I have changed the ntp to use work_queue what do you think ?

attached the changed code:

+ fail = dpc_update_persistent_clock(now);

instead of

- update_persistent_clock(now); // this is called to function that might
be block. you can't do that in interrupt context
the function call schedule_work

extern int dpc_update_persistent_clock(struct timespec now){;



another option is to change the wrapper function for the set_rtc_xx but
in this case you will need to change all the platforms that uses it (


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