* [PATCH v4.12 -stable] rt2800: fix TX_PIN_CFG setting for non MT7620 chips
@ 2017-09-11 10:55 Stanislaw Gruszka
2017-09-11 12:04 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Stanislaw Gruszka @ 2017-09-11 10:55 UTC (permalink / raw)
To: stable; +Cc: Larry Finger
commit 83ec489193894e52bd395eec470f4f7c4286d4a5 upstream.
Since commit 41977e86c984 ("rt2x00: add support for MT7620") we do not
initialize TX_PIN_CFG setting. This cause breakage at least on some
RT3573 devices. To fix the problem patch restores previous behaviour
for non MT7620 chips.
Fixes: 41977e86c984 ("rt2x00: add support for MT7620")
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1480829
Reported-and-tested-by: Jussi Eloranta <jussi.eloranta@csun.edu>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
This fix should be applied to 4.12 and 4.13 trees.
Patch for 4.13 is the same as commited to Linus tree.
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index d11c7b2..5672aec 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -3699,7 +3699,10 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
if (rt2x00_rt(rt2x00dev, RT3572))
rt2800_rfcsr_write(rt2x00dev, 8, 0);
- rt2800_register_read(rt2x00dev, TX_PIN_CFG, &tx_pin);
+ if (rt2x00_rt(rt2x00dev, RT6352))
+ rt2800_register_read(rt2x00dev, TX_PIN_CFG, &tx_pin);
+ else
+ tx_pin = 0;
switch (rt2x00dev->default_ant.tx_chain_num) {
case 3:
--
2.7.5
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH v4.12 -stable] rt2800: fix TX_PIN_CFG setting for non MT7620 chips
2017-09-11 10:55 [PATCH v4.12 -stable] rt2800: fix TX_PIN_CFG setting for non MT7620 chips Stanislaw Gruszka
@ 2017-09-11 12:04 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2017-09-11 12:04 UTC (permalink / raw)
To: Stanislaw Gruszka; +Cc: stable, Larry Finger
On Mon, Sep 11, 2017 at 12:55:36PM +0200, Stanislaw Gruszka wrote:
> commit 83ec489193894e52bd395eec470f4f7c4286d4a5 upstream.
>
> Since commit 41977e86c984 ("rt2x00: add support for MT7620") we do not
> initialize TX_PIN_CFG setting. This cause breakage at least on some
> RT3573 devices. To fix the problem patch restores previous behaviour
> for non MT7620 chips.
>
> Fixes: 41977e86c984 ("rt2x00: add support for MT7620")
> Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1480829
> Reported-and-tested-by: Jussi Eloranta <jussi.eloranta@csun.edu>
> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
> ---
> drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> This fix should be applied to 4.12 and 4.13 trees.
> Patch for 4.13 is the same as commited to Linus tree.
Thanks, now queued up.
greg k-h
^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-09-11 10:55 [PATCH v4.12 -stable] rt2800: fix TX_PIN_CFG setting for non MT7620 chips Stanislaw Gruszka
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