linux-kernel - [PATCH AUTOSEL 4.19 266/671] spi: tegra114: clear packed bit for unpacked mode

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Message-Id: <20200116170509.12787-3-sashal@kernel.org>
Date:   Thu, 16 Jan 2020 11:58:24 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Sowjanya Komatineni <skomatineni@...dia.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, linux-spi@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 266/671] spi: tegra114: clear packed bit for unpacked mode

From: Sowjanya Komatineni <skomatineni@...dia.com>

[ Upstream commit 7b3d10cdf54b8bc1dc0da21faed9789ac4da3684 ]

Fixes: Clear packed bit when not using packed mode.

Packed bit is not cleared when not using packed mode. This results
in transfer timeouts for the unpacked mode transfers followed by the
packed mode transfers.

Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi-tegra114.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c
index a1888dc6a938..fd039cab768a 100644
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -730,6 +730,8 @@ static int tegra_spi_start_transfer_one(struct spi_device *spi,
 
 	if (tspi->is_packed)
 		command1 |= SPI_PACKED;
+	else
+		command1 &= ~SPI_PACKED;
 
 	command1 &= ~(SPI_CS_SEL_MASK | SPI_TX_EN | SPI_RX_EN);
 	tspi->cur_direction = 0;
-- 
2.20.1