[PATCH 02/32] staging: brcm80211: new Kconfig item to enable IO reordering fix

[Arend van Spriel]

On 05/14/2011 05:46 PM, Greg KH wrote:
> On Fri, May 13, 2011 at 11:59:22AM +0200, Arend van Spriel wrote:
>> From: Roland Vossen<rvossen at broadcom.com>
>>
>> bcm4716 (which includes 4717&  4718), plus 4706 on PCIe can reorder
>> transactions. As a fix, a read after write is performed on certain places
>> in the code. Older chips and the newer 5357 family don't require this fix.
>>
>> Cc: devel at linuxdriverproject.org
>> Cc: linux-wireless at vger.kernel.org
>> Reviewed-by: Henry Ptasinski<henryp at broadcom.com>
>> Reviewed-by: Brett Rudley<brudley at broadcom.com>
>> Signed-off-by: Arend van Spriel<arend at broadcom.com>
>> ---
>>   drivers/staging/brcm80211/Kconfig                  |    8 ++++++++
>>   .../staging/brcm80211/brcmsmac/phy/wlc_phy_cmn.c   |    4 ++--
>>   drivers/staging/brcm80211/include/bcmutils.h       |   11 +++++++++++
>>   3 files changed, 21 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/staging/brcm80211/Kconfig b/drivers/staging/brcm80211/Kconfig
>> index f4cf9b2..a11ffc7 100644
>> --- a/drivers/staging/brcm80211/Kconfig
>> +++ b/drivers/staging/brcm80211/Kconfig
>> @@ -36,3 +36,11 @@ config BRCMDBG
>>   	depends on BRCMSMAC || BRCMFMAC
>>   	---help---
>>   	  Selecting this enables additional code for debug purposes.
>> +
>> +config BRCM_FIX_IO_ORDER
>> +	bool "Broadcom I/O order fix"
>> +	default n
>> +	depends on BRCMSMAC
>> +	---help---
>> +	  Select this for for platforms running on bcm4706, 4716, 4717 or 4718.
>> +	  It resolves an I/O issue with the PCIe core used in these chips.
> No, don't make a new kconfig option for something that everyone has to
> enable as they don't know what they have on their system (think
> universal kernels built by distros.)
>
> Do this check dynamically, depending on the chip the driver is running
> on, don't rely on a user to know what to do here.
>
> So I'm not going to accept this patch, sorry.
Hi Greg,

No problem. Thanks for the feedback. There are two other patches in this 
series which depend on this one. Could you also drop the following:

[PATCH 03/32] staging: brcm80211: replaced #ifdef __mips__ sections by 
W_REG_FLUSH
[PATCH 11/32] staging: brcm80211: Kconfig fix for 'Broadcom I/O order fix'

Gr. AvS

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