mac80211: rt2x00: revert commit causing regression in 5GHz band
From: Stanislaw Gruszka <sgruszka@redhat.com>
This reverts commit 9ad3b55654455258a9463384edb40077439d879f.
As reported by Sergey:
"I got some problem after upgrade kernel to 5.2 version (debian testing
linux-image-5.2.0-2-amd64). 5Ghz client stopped to see AP.
Some tests with 1metre distance between client-AP: 2.4Ghz -22dBm, for
5Ghz - 53dBm !, for longer distance (8m + walls) 2.4 - 61dBm, 5Ghz not
visible."
It was identified that rx signal level degradation was caused by
9ad3b5565445 ("rt2800: enable TX_PIN_CFG_LNA_PE_ bits per band").
So revert this commit.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
master
Daniel Golle
5 years ago
parent
bec2df9a66
commit
a58bfb7377
@ -0,0 +1,70 @@
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From patchwork Thu Aug 29 11:29:59 2019
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Content-Type: text/plain; charset="utf-8"
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MIME-Version: 1.0
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Content-Transfer-Encoding: 7bit
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X-Patchwork-Submitter: Stanislaw Gruszka <sgruszka@redhat.com>
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X-Patchwork-Id: 11121089
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X-Patchwork-Delegate: kvalo@adurom.com
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From: Stanislaw Gruszka <sgruszka@redhat.com>
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To: linux-wireless@vger.kernel.org
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Subject: [PATCH 5.3] Revert "rt2800: enable TX_PIN_CFG_LNA_PE_ bits per band"
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Date: Thu, 29 Aug 2019 13:29:59 +0200
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Message-Id: <1567078199-3645-1-git-send-email-sgruszka@redhat.com>
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Sender: linux-wireless-owner@vger.kernel.org
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List-ID: <linux-wireless.vger.kernel.org>
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X-Mailing-List: linux-wireless@vger.kernel.org
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This reverts commit 9ad3b55654455258a9463384edb40077439d879f.
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As reported by Sergey:
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"I got some problem after upgrade kernel to 5.2 version (debian testing
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linux-image-5.2.0-2-amd64). 5Ghz client stopped to see AP.
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Some tests with 1metre distance between client-AP: 2.4Ghz -22dBm, for
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5Ghz - 53dBm !, for longer distance (8m + walls) 2.4 - 61dBm, 5Ghz not
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visible."
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It was identified that rx signal level degradation was caused by
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9ad3b5565445 ("rt2800: enable TX_PIN_CFG_LNA_PE_ bits per band").
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So revert this commit.
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Cc: <stable@vger.kernel.org> # v5.1+
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Reported-and-tested-by: Sergey Maranchuk <slav0nic0@gmail.com>
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Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
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---
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drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 18 ++++++------------
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1 file changed, 6 insertions(+), 12 deletions(-)
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--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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@@ -4242,24 +4242,18 @@ static void rt2800_config_channel(struct
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switch (rt2x00dev->default_ant.rx_chain_num) {
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case 3:
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/* Turn on tertiary LNAs */
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- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A2_EN,
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- rf->channel > 14);
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- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G2_EN,
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- rf->channel <= 14);
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+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A2_EN, 1);
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+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G2_EN, 1);
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/* fall-through */
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case 2:
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/* Turn on secondary LNAs */
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- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN,
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- rf->channel > 14);
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- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN,
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- rf->channel <= 14);
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+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN, 1);
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+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN, 1);
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/* fall-through */
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case 1:
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/* Turn on primary LNAs */
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- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A0_EN,
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- rf->channel > 14);
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- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G0_EN,
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- rf->channel <= 14);
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+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A0_EN, 1);
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+ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G0_EN, 1);
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break;
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}
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