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    Subject[PATCH 4.20 097/352] mt76x0: dfs: fix IBI_R11 configuration on non-radar channels
    Date
    4.20-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    [ Upstream commit 6bf4a8e902aad7df55d7f2b10b850cfa3f880996 ]

    Fix IBI_R11 configuration on non-radar channels for mt76x0e
    driver. This patch improve system stability under heavy load.
    Moreover use IBI_R11 name and remove magic numbers for
    0x212c register

    Fixes: 0c3b3abc9251 ("mt76x0: pci: add DFS support")
    Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
    Signed-off-by: Felix Fietkau <nbd@nbd.name>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/wireless/mediatek/mt76/mt76x2/pci_dfs.c | 8 ++++++--
    1 file changed, 6 insertions(+), 2 deletions(-)

    diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/pci_dfs.c b/drivers/net/wireless/mediatek/mt76/mt76x2/pci_dfs.c
    index b56febae8945..764528c9f48a 100644
    --- a/drivers/net/wireless/mediatek/mt76/mt76x2/pci_dfs.c
    +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/pci_dfs.c
    @@ -800,7 +800,7 @@ static void mt76x2_dfs_set_bbp_params(struct mt76x02_dev *dev)

    /* enable detection*/
    mt76_wr(dev, MT_BBP(DFS, 0), MT_DFS_CH_EN << 16);
    - mt76_wr(dev, 0x212c, 0x0c350001);
    + mt76_wr(dev, MT_BBP(IBI, 11), 0x0c350001);
    }

    void mt76x2_dfs_adjust_agc(struct mt76x02_dev *dev)
    @@ -843,7 +843,11 @@ void mt76x2_dfs_init_params(struct mt76x02_dev *dev)
    mt76_wr(dev, MT_BBP(DFS, 0), 0);
    /* clear detector status */
    mt76_wr(dev, MT_BBP(DFS, 1), 0xf);
    - mt76_wr(dev, 0x212c, 0);
    + if (mt76_chip(&dev->mt76) == 0x7610 ||
    + mt76_chip(&dev->mt76) == 0x7630)
    + mt76_wr(dev, MT_BBP(IBI, 11), 0xfde8081);
    + else
    + mt76_wr(dev, MT_BBP(IBI, 11), 0);

    mt76x02_irq_disable(dev, MT_INT_GPTIMER);
    mt76_rmw_field(dev, MT_INT_TIMER_EN,
    --
    2.19.1


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