On 10/21/2023 4:40 PM, Daniel Berlin wrote:
As an aside, the alternative would be to simply not ignore any attempts to set the regulatory domain, regardless of whether it's 00 or the chip is already set to that country. It doesn't happen that often, so it's not clear it's worth avoiding it at all. There are some things i'd have to fix to make it work resiliently well (for example, i know we set the 2g bw cap where we do because it has to be done with the interface down), but i can fix those if needed.
Please do not top post.The firmware has its own regulatory information (actually the CLM blob holds that information) which is independent of the wireless regulatory database in the kernel. As such trying to configure country '00' will simply fail as it is not known inside CLM blob. The firmware needs a country abbreviation *and* a revision. Hence we require a mapping of country code to <abbrev,rev> tuple. If that mapping is not in place we bail out setting the country in the regulatory notifier.
From the description below it is not clear what problem is fixed here in terms of user experience.
Regards, Arend
On Thu, Oct 19, 2023 at 10:18 AM Daniel Berlin <dberlin@xxxxxxxxxxx> wrote:Currently, we ignore the default country in the reg notifier. We also register a custom regulatory domain, which is set as the default. As a result, the chip is likely to be set to the correct country, but the regulatory domain will not match it. When the regulatory notifier is then called, we see the countries are the same and do not change anything, even though the domain is wrong. This patch forces us to reset the bands on the first country change even if the chip is already set to that country. We also restore the original band info before reconstructing channel info, as the new regdom power limits may be higher than what is currently set. Signed-off-by: Daniel Berlin <dberlin@xxxxxxxxxxx> --- .../broadcom/brcm80211/brcmfmac/cfg80211.c | 38 +++++++++++++++---- .../broadcom/brcm80211/brcmfmac/cfg80211.h | 2 + 2 files changed, 33 insertions(+), 7 deletions(-)
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