Re: [PATCH 3.4 027/125] firewire: ohci: fix JMicron JMB38x IT context discovery

[Stefan Richter]

On Oct 12 lizf@xxxxxxxxxx wrote:
[...]
> Signed-off-by: Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx>
> [lizf: Backported to 3.4: use dev_notice() instead of ohci_notice()]
> Signed-off-by: Zefan Li <lizefan@xxxxxxxxxx>
> ---
>  drivers/firewire/ohci.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
> index c1de4c3..4eedb07 100644
> --- a/drivers/firewire/ohci.c
> +++ b/drivers/firewire/ohci.c
> @@ -3620,6 +3620,11 @@ static int __devinit pci_probe(struct pci_dev *dev,
>  
>  	reg_write(ohci, OHCI1394_IsoXmitIntMaskSet, ~0);
>  	ohci->it_context_support = reg_read(ohci, OHCI1394_IsoXmitIntMaskSet);
> +	/* JMicron JMB38x often shows 0 at first read, just ignore it */
> +	if (!ohci->it_context_support) {
> +		dev_notice(&dev->dev, "overriding IsoXmitIntMask\n");
> +		ohci->it_context_support = 0xf;
> +	}
>  	reg_write(ohci, OHCI1394_IsoXmitIntMaskClear, ~0);
>  	ohci->it_context_mask = ohci->it_context_support;
>  	ohci->n_it = hweight32(ohci->it_context_mask);

Backport looks good to me.  Thanks.
-- 
Stefan Richter
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