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Date: Tue, 12 Sep 2017 09:59:51 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Daniel Golle <daniel@...rotopia.org>, Stanislaw Gruszka <sgruszka@...hat.com>, Kalle Valo <kvalo@...eaurora.org> Subject: [PATCH 4.12 16/22] rt2800: fix TX_PIN_CFG setting for non MT7620 chips 4.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Stanislaw Gruszka <sgruszka@...hat.com> 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@...n.edu> Cc: Daniel Golle <daniel@...rotopia.org> Signed-off-by: Stanislaw Gruszka <sgruszka@...hat.com> Acked-by: Daniel Golle <daniel@...rotopia.org> Signed-off-by: Kalle Valo <kvalo@...eaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- 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 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:
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