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Message-ID: <ab40e9c0708181834y7804a961p2c48a32a78fae688@mail.gmail.com>
Date: Sun, 19 Aug 2007 03:34:45 +0200
From: "Xu Yang" <risingsunxy@...glemail.com>
To: linux-kernel@...r.kernel.org
Subject: TIMER0 interrupt's problem in kernel 2.6.21 ( realview-smp_defconfig)
I am running kernel 2.6.21 on my realview_eb_mpcore system.
at the beginning I found the program is stuck at calibrating
loop................, this is because that the timer0 didn't give out
any interrupt.
after enable the timer0's interrupt, I found that even when there is
no timer interrupt the interrupt routine (realview_timer_interrupt()
)is still reached.
I added a timer interrupt disable instruction in the routine
realview_timer_interrupt() , which makes sure that after the first
interrupt the interrupt would be disabled. even in this situation , I
can still see that the interrupt routine is accessed by the cpu.
I guess this maybe caused by the problem of the gic_ack() or some
other functions?
does anyone ever meet such a situation?
anyone knows how to handle this?
any idea is appreciated.
regards,
Yang
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