linux-kernel - [PATCH 02/12] spi: spi-fsl-dspi: Remove unused chip->void_write

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Date:   Thu,  5 Mar 2020 00:00:34 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     broonie@...nel.org
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        eha@...f.com, angelo@...am.it, andrew.smirnov@...il.com,
        gustavo@...eddedor.com, weic@...dia.com, mhosny@...dia.com
Subject: [PATCH 02/12] spi: spi-fsl-dspi: Remove unused chip->void_write_data

From: Vladimir Oltean <vladimir.oltean@....com>

This variable has been present since the initial submission of the
driver, and held, for some reason, the value of zero, to be sent on the
wire in the case there wasn't any TX buffer for the current transfer.

Since quite a while now, however, it isn't doing anything at all.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/spi/spi-fsl-dspi.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index 896d7a0f45b0..63ec1d634d08 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -110,7 +110,6 @@
 
 struct chip_data {
 	u32			ctar_val;
-	u16			void_write_data;
 };
 
 enum dspi_trans_mode {
@@ -235,7 +234,6 @@ struct fsl_dspi {
 	const void				*tx;
 	void					*rx;
 	void					*rx_end;
-	u16					void_write_data;
 	u16					tx_cmd;
 	u8					bits_per_word;
 	u8					bytes_per_word;
@@ -795,8 +793,6 @@ static int dspi_transfer_one_message(struct spi_controller *ctlr,
 				dspi->tx_cmd |= SPI_PUSHR_CMD_CONT;
 		}
 
-		dspi->void_write_data = dspi->cur_chip->void_write_data;
-
 		dspi->tx = transfer->tx_buf;
 		dspi->rx = transfer->rx_buf;
 		dspi->rx_end = dspi->rx + transfer->len;
@@ -897,8 +893,6 @@ static int dspi_setup(struct spi_device *spi)
 		sck_cs_delay = pdata->sck_cs_delay;
 	}
 
-	chip->void_write_data = 0;
-
 	clkrate = clk_get_rate(dspi->clk);
 	hz_to_spi_baud(&pbr, &br, spi->max_speed_hz, clkrate);
 
-- 
2.17.1