diff options
Diffstat (limited to 'package/kernel/mac80211/patches/rt2x00/016-rt2x00-revert-rt2800-enable-TX_PIN_CFG_LNA_PE_-bits-per-band.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/rt2x00/016-rt2x00-revert-rt2800-enable-TX_PIN_CFG_LNA_PE_-bits-per-band.patch | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/rt2x00/016-rt2x00-revert-rt2800-enable-TX_PIN_CFG_LNA_PE_-bits-per-band.patch b/package/kernel/mac80211/patches/rt2x00/016-rt2x00-revert-rt2800-enable-TX_PIN_CFG_LNA_PE_-bits-per-band.patch new file mode 100644 index 0000000000..3fcf231870 --- /dev/null +++ b/package/kernel/mac80211/patches/rt2x00/016-rt2x00-revert-rt2800-enable-TX_PIN_CFG_LNA_PE_-bits-per-band.patch @@ -0,0 +1,70 @@ +From patchwork Thu Aug 29 11:29:59 2019 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +X-Patchwork-Submitter: Stanislaw Gruszka <sgruszka@redhat.com> +X-Patchwork-Id: 11121089 +X-Patchwork-Delegate: kvalo@adurom.com +From: Stanislaw Gruszka <sgruszka@redhat.com> +To: linux-wireless@vger.kernel.org +Subject: [PATCH 5.3] Revert "rt2800: enable TX_PIN_CFG_LNA_PE_ bits per band" +Date: Thu, 29 Aug 2019 13:29:59 +0200 +Message-Id: <1567078199-3645-1-git-send-email-sgruszka@redhat.com> +Sender: linux-wireless-owner@vger.kernel.org +List-ID: <linux-wireless.vger.kernel.org> +X-Mailing-List: linux-wireless@vger.kernel.org + +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. + +Cc: <stable@vger.kernel.org> # v5.1+ +Reported-and-tested-by: Sergey Maranchuk <slav0nic0@gmail.com> +Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> +--- + drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 18 ++++++------------ + 1 file changed, 6 insertions(+), 12 deletions(-) + +--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +@@ -4242,24 +4242,18 @@ static void rt2800_config_channel(struct + switch (rt2x00dev->default_ant.rx_chain_num) { + case 3: + /* Turn on tertiary LNAs */ +- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A2_EN, +- rf->channel > 14); +- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G2_EN, +- rf->channel <= 14); ++ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A2_EN, 1); ++ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G2_EN, 1); + /* fall-through */ + case 2: + /* Turn on secondary LNAs */ +- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN, +- rf->channel > 14); +- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN, +- rf->channel <= 14); ++ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A1_EN, 1); ++ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G1_EN, 1); + /* fall-through */ + case 1: + /* Turn on primary LNAs */ +- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A0_EN, +- rf->channel > 14); +- rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G0_EN, +- rf->channel <= 14); ++ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_A0_EN, 1); ++ rt2x00_set_field32(&tx_pin, TX_PIN_CFG_LNA_PE_G0_EN, 1); + break; + } + |