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    Subject[PATCH 5.15 29/37] Revert "ath: add support for special 0x0 regulatory domain"
    Date
    From: Brian Norris <briannorris@chromium.org>

    commit 1ec7ed5163c70a0d040150d2279f932c7e7c143f upstream.

    This reverts commit 2dc016599cfa9672a147528ca26d70c3654a5423.

    Users are reporting regressions in regulatory domain detection and
    channel availability.

    The problem this was trying to resolve was fixed in firmware anyway:

    QCA6174 hw3.0: sdio-4.4.1: add firmware.bin_WLAN.RMH.4.4.1-00042
    https://github.com/kvalo/ath10k-firmware/commit/4d382787f0efa77dba40394e0bc604f8eff82552

    Link: https://bbs.archlinux.org/viewtopic.php?id=254535
    Link: http://lists.infradead.org/pipermail/ath10k/2020-April/014871.html
    Link: http://lists.infradead.org/pipermail/ath10k/2020-May/015152.html
    Link: https://lore.kernel.org/all/1c160dfb-6ccc-b4d6-76f6-4364e0adb6dd@reox.at/
    Fixes: 2dc016599cfa ("ath: add support for special 0x0 regulatory domain")
    Cc: <stable@vger.kernel.org>
    Cc: Wen Gong <wgong@codeaurora.org>
    Signed-off-by: Brian Norris <briannorris@chromium.org>
    Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
    Link: https://lore.kernel.org/r/20200527165718.129307-1-briannorris@chromium.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/net/wireless/ath/regd.c | 10 +++++-----
    1 file changed, 5 insertions(+), 5 deletions(-)

    --- a/drivers/net/wireless/ath/regd.c
    +++ b/drivers/net/wireless/ath/regd.c
    @@ -667,14 +667,14 @@ ath_regd_init_wiphy(struct ath_regulator

    /*
    * Some users have reported their EEPROM programmed with
    - * 0x8000 or 0x0 set, this is not a supported regulatory
    - * domain but since we have more than one user with it we
    - * need a solution for them. We default to 0x64, which is
    - * the default Atheros world regulatory domain.
    + * 0x8000 set, this is not a supported regulatory domain
    + * but since we have more than one user with it we need
    + * a solution for them. We default to 0x64, which is the
    + * default Atheros world regulatory domain.
    */
    static void ath_regd_sanitize(struct ath_regulatory *reg)
    {
    - if (reg->current_rd != COUNTRY_ERD_FLAG && reg->current_rd != 0)
    + if (reg->current_rd != COUNTRY_ERD_FLAG)
    return;
    printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n");
    reg->current_rd = 0x64;

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