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authorIlkka Virta <itvirta@iki.fi>2009-02-07 01:00:36 -0500
committerDavid S. Miller <davem@davemloft.net>2009-02-07 01:00:36 -0500
commit71822faa3bc0af5dbf5e333a2d085f1ed7cd809f (patch)
treeb0ad50f98ee521de666f595ec4d33b430f39a80c /drivers/infiniband
parent15bde72738f373aa060ececeda8e064e4f924360 (diff)
sungem: Soft lockup in sungem on Netra AC200 when switching interface up
From: Ilkka Virta <itvirta@iki.fi> In the lockup situation the driver seems to go off in an eternal storm of interrupts right after calling request_irq(). It doesn't actually do anything interesting in the interrupt handler. Since connecting the link afterwards works, something later in initialization must fix this. Looking at gem_do_start() and gem_open(), it seems that the only thing done while opening the device after the request_irq(), is a call to napi_enable(). I don't know what the ordering requirements are for the initialization, but I boldly tried to move the napi_enable() call inside gem_do_start() before the link state is checked and interrupts subsequently enabled, and it seems to work for me. Doesn't even break anything too obvious... Signed-off-by: David S. Miller <davem@davemloft.net>
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