Linas Vepstas wrote:
From: Ishizaki Kou <[EMAIL PROTECTED]>
We intend this patch to improve spidernet interrupt handling to be
more strict. We had following problem and this patch solves it.
-when CONFIG_DEBUG_SHIRQ=y, request_irq() calls handler().
-when spider_net_open() is called, it calls request_irq() which calls
spider_net_interrupt().
-if some specific interrupt bit is set at this timing, it calls
netif_rx_schedule() and spider_net_poll() is scheduled.
-spider_net_open() calls netif_poll_enable() which clears the bit
__LINK_STATE_RX_SCHED.
-when spider_net_poll() is called, it calls netif_rx_complete() which
causes BUG_ON() because __LINK_STATE_RX_SCHED is not set.
Signed-off-by: Kou Ishizaki <[EMAIL PROTECTED]>
Signed-off-by: Linas Vepstas <[EMAIL PROTECTED]>
----
Jeff, please apply for 2.6.23
Linas.
drivers/net/spider_net.c | 59 +++++++++++++++++++++++++++++++++++------------
1 file changed, 45 insertions(+), 14 deletions(-)
applied
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