From 103ccee4ef1595468cf79c93068d253c7f2d85a8 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 10 Jul 2013 10:38:18 -0600 Subject: [PATCH] spi: revert master->setup function removal for altera and nuc900 Commit 24778be "spi: convert drivers to use bits_per_word_mask" removed what appeared to be redundant code from many drivers. However, it appears that in the spi-bitbang case, these functions are required by the spi-bitbang core, even if they don't do anything. Restore them. For 3.12, the spi-bitbang core should be adjusted not to require these callbacks to exist if they don't need to do anything. This is the equivalent of Michal Simek's patch "spi/xilinx: Revert master->setup function removal", applied to other affected drivers. Signed-off-by: Stephen Warren Signed-off-by: Mark Brown --- drivers/spi/spi-altera.c | 12 ++++++++++++ drivers/spi/spi-nuc900.c | 13 +++++++++++++ 2 files changed, 25 insertions(+) diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c index 8a6bb37910da..81b9adb6e766 100644 --- a/drivers/spi/spi-altera.c +++ b/drivers/spi/spi-altera.c @@ -103,6 +103,16 @@ static void altera_spi_chipsel(struct spi_device *spi, int value) } } +static int altera_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t) +{ + return 0; +} + +static int altera_spi_setup(struct spi_device *spi) +{ + return 0; +} + static inline unsigned int hw_txbyte(struct altera_spi *hw, int count) { if (hw->tx) { @@ -221,6 +231,7 @@ static int altera_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; master->num_chipselect = 16; master->mode_bits = SPI_CS_HIGH; + master->setup = altera_spi_setup; hw = spi_master_get_devdata(master); platform_set_drvdata(pdev, hw); @@ -229,6 +240,7 @@ static int altera_spi_probe(struct platform_device *pdev) hw->bitbang.master = spi_master_get(master); if (!hw->bitbang.master) return err; + hw->bitbang.setup_transfer = altera_spi_setupxfer; hw->bitbang.chipselect = altera_spi_chipsel; hw->bitbang.txrx_bufs = altera_spi_txrx; diff --git a/drivers/spi/spi-nuc900.c b/drivers/spi/spi-nuc900.c index 2ad3d74ac021..150d85453c27 100644 --- a/drivers/spi/spi-nuc900.c +++ b/drivers/spi/spi-nuc900.c @@ -174,6 +174,17 @@ static void nuc900_spi_gobusy(struct nuc900_spi *hw) spin_unlock_irqrestore(&hw->lock, flags); } +static int nuc900_spi_setupxfer(struct spi_device *spi, + struct spi_transfer *t) +{ + return 0; +} + +static int nuc900_spi_setup(struct spi_device *spi) +{ + return 0; +} + static inline unsigned int hw_txbyte(struct nuc900_spi *hw, int count) { return hw->tx ? hw->tx[count] : 0; @@ -366,8 +377,10 @@ static int nuc900_spi_probe(struct platform_device *pdev) master->num_chipselect = hw->pdata->num_cs; master->bus_num = hw->pdata->bus_num; hw->bitbang.master = hw->master; + hw->bitbang.setup_transfer = nuc900_spi_setupxfer; hw->bitbang.chipselect = nuc900_spi_chipsel; hw->bitbang.txrx_bufs = nuc900_spi_txrx; + hw->bitbang.master->setup = nuc900_spi_setup; hw->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (hw->res == NULL) { -- 2.39.5