[PATCH v3 net-next 1/1] drivers: net: davinci_cpdma: acknowledge interrupt properly

Mugunthan V N mugunthanvnm at ti.com
Thu Mar 14 06:21:23 EDT 2013


On 3/13/2013 3:04 PM, Mark Jackson wrote:
> On 18/02/13 08:19, Mugunthan V N wrote:
>> >CPDMA interrupts are not properly acknowledged which leads to interrupt
>> >storm, only cpdma interrupt 0 is acknowledged in Davinci CPDMA driver.
>> >Changed cpdma_ctlr_eoi api to acknowledge 1 and 2 interrupts which are
>> >used for rx and tx respectively.
>> >
>> >Reported-by: Pantelis Antoniou<panto at antoniou-consulting.com>
>> >Signed-off-by: Mugunthan V N<mugunthanvnm at ti.com>
> Not sure if I'm seeing this same problem [1], but it doesn't appear fixed to me.
>
> I've tried both mainline -rc2 and -next.
>
> [1]https://lkml.org/lkml/2013/3/12/376
Without this patch, PG2.0 was not usable as CPSW interrupt was never acked
and CPU spent most of the time in CPSW ISR.

I have checked -rc2 and it is working fine.

Regards
Mugunthan V N



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