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domenico
2025-06-24 16:03:39 +02:00
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package/kernel/mac80211/patches/rt2x00/075-rt2800-remove-errornous-duplicate-condition.patch Normal file
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From patchwork Sat Nov 2 17:47:01 2019
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X-Patchwork-Submitter: Daniel Golle <daniel@makrotopia.org>
X-Patchwork-Id: 11224189
X-Patchwork-Delegate: kvalo@adurom.com
Return-Path: <SRS0=CgQo=Y2=vger.kernel.org=linux-wireless-owner@kernel.org>
Date: Sat, 2 Nov 2019 18:47:01 +0100
From: Daniel Golle <daniel@makrotopia.org>
To: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: linux-wireless@vger.kernel.org, Roman Yeryomin <roman@advem.lv>,
wbob <wbob@jify.de>
Subject: [PATCH v2] rt2800: remove errornous duplicate condition
Message-ID: <20191102174701.GA1489@makrotopia.org>
References: <20191102154639.GA4589@redhat.com>
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User-Agent: Mutt/1.12.2 (2019-09-21)
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On 2019-10-28 06:07, wbob wrote:
> Hello Roman,
>
> while reading around drivers/net/wireless/ralink/rt2x00/rt2800lib.c
> I stumbled on what I think is an edit of yours made in error in march
> 2017:
>
> https://github.com/torvalds/linux/commit/41977e86#diff-dae5dc10da180f3b055809a48118e18aR5281
>
> RT6352 in line 5281 should not have been introduced as the "else if"
> below line 5291 can then not take effect for a RT6352 device. Another
> possibility is for line 5291 to be not for RT6352, but this seems
> very unlikely. Are you able to clarify still after this substantial time?
>
> 5277: static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
> ...
> 5279: } else if (rt2x00_rt(rt2x00dev, RT5390) ||
> 5280: rt2x00_rt(rt2x00dev, RT5392) ||
> 5281: rt2x00_rt(rt2x00dev, RT6352)) {
> ...
> 5291: } else if (rt2x00_rt(rt2x00dev, RT6352)) {
> ...
Hence remove errornous line 5281 to make the driver actually
execute the correct initialization routine for MT7620 chips.
As it was requested by Stanislaw Gruszka remove setting values of
MIMO_PS_CFG and TX_PIN_CFG. MIMO_PS_CFG is responsible for MIMO
power-safe mode (which is disabled), hence we can drop setting it.
TX_PIN_CFG is set correctly in other functions, and as setting this
value breaks some devices, rather don't set it here during init, but
only modify it later on.
Fixes: 41977e86c984 ("rt2x00: add support for MT7620")
Reported-by: wbob <wbob@jify.de>
Reported-by: Roman Yeryomin <roman@advem.lv>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -5850,8 +5850,7 @@ static int rt2800_init_registers(struct
rt2800_register_write(rt2x00dev, TX_TXBF_CFG_0, 0x8000fc21);
rt2800_register_write(rt2x00dev, TX_TXBF_CFG_3, 0x00009c40);
} else if (rt2x00_rt(rt2x00dev, RT5390) ||
- rt2x00_rt(rt2x00dev, RT5392) ||
- rt2x00_rt(rt2x00dev, RT6352)) {
+ rt2x00_rt(rt2x00dev, RT5392)) {
rt2800_register_write(rt2x00dev, TX_SW_CFG0, 0x00000404);
rt2800_register_write(rt2x00dev, TX_SW_CFG1, 0x00080606);
rt2800_register_write(rt2x00dev, TX_SW_CFG2, 0x00000000);
@@ -5865,8 +5864,6 @@ static int rt2800_init_registers(struct
rt2800_register_write(rt2x00dev, TX_SW_CFG0, 0x00000401);
rt2800_register_write(rt2x00dev, TX_SW_CFG1, 0x000C0000);
rt2800_register_write(rt2x00dev, TX_SW_CFG2, 0x00000000);
- rt2800_register_write(rt2x00dev, MIMO_PS_CFG, 0x00000002);
- rt2800_register_write(rt2x00dev, TX_PIN_CFG, 0x00150F0F);
rt2800_register_write(rt2x00dev, TX_ALC_VGA3, 0x00000000);
rt2800_register_write(rt2x00dev, TX0_BB_GAIN_ATTEN, 0x0);
rt2800_register_write(rt2x00dev, TX1_BB_GAIN_ATTEN, 0x0);