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Re: [PATCH 2/4] staging: brcm80211: brcmfmac: remove PCI SDIO controller binding

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On Thu, Nov 18, 2010 at 12:11 AM, Greg KH <gregkh@xxxxxxx> wrote:
> On Thu, Nov 18, 2010 at 12:00:16AM +0200, Mike Rapoport wrote:
>> On Wed, Nov 17, 2010 at 11:10 PM, Greg KH <greg@xxxxxxxxx> wrote:
>> > On Wed, Nov 17, 2010 at 09:58:46AM +0200, Mike Rapoport wrote:
>> >> Signed-off-by: Mike Rapoport <mike.rapoport@xxxxxxxxx>
>> >> ---
>> >>  drivers/staging/brcm80211/brcmfmac/bcmsdh_linux.c |  229 ---------------------
>> >>  1 files changed, 0 insertions(+), 229 deletions(-)
>> >
>> > Wait, is this really ok code to be removing from the driver?
>> >
>> > Brett and Henry, any objections to this?
>> >
>> > Mike, why do you think this is ok to remove?  Is it because no one is
>> > ever calling this even for both types of config for this driver?
>>
>> There's a lot of code in the brcmfmac part of the driver that tries to
>> re-implement SDIO stack. In particular, the code removed by this patch
>> registers a pci_driver for SDIO controller and then the brcmfmac
>> driver accesses the WiFi device attached to that SDIO controller by
>> means of custom re-implementation of SDHC.
>
> Ok, so even with this patch, it will still work properly in the SDIO
> mode?

The driver binds to the device and it is able to download firmware and
initialize the network interface.

> Have you been able to test this?

I was never able to have the radio working properly with this driver,
both before and after my patches. However, the patches do not affect
the driver initialization and firmware download.

> Brett, Henry, I would like to get your ack on this before applying it.
>
> thanks,
>
> greg k-h
>



-- 
    Sincerely Yours,
        Mike.
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