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-rw-r--r--drivers/spi/Kconfig4
-rw-r--r--drivers/spi/spi-atmel.c16
-rw-r--r--drivers/spi/spi-bcm-qspi.c4
-rw-r--r--drivers/spi/spi-bcm2835aux.c18
-rw-r--r--drivers/spi/spi-dw-mid.c6
-rw-r--r--drivers/spi/spi-dw.c26
-rw-r--r--drivers/spi/spi-dw.h4
-rw-r--r--drivers/spi/spi-gpio.c270
-rw-r--r--drivers/spi/spi-orion.c65
-rw-r--r--drivers/spi/spi-pxa2xx-dma.c4
-rw-r--r--drivers/spi/spi-pxa2xx.c56
-rw-r--r--drivers/spi/spi-pxa2xx.h2
-rw-r--r--drivers/spi/spi-rspi.c4
-rw-r--r--drivers/spi/spi.c19
14 files changed, 233 insertions, 265 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 603783976b81..6fb0347a24f2 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -72,10 +72,10 @@ config SPI_ARMADA_3700
 config SPI_ATMEL
 	tristate "Atmel SPI Controller"
 	depends on HAS_DMA
-	depends on (ARCH_AT91 || AVR32 || COMPILE_TEST)
+	depends on (ARCH_AT91 || COMPILE_TEST)
 	help
 	  This selects a driver for the Atmel SPI Controller, present on
-	  many AT32 (AVR32) and AT91 (ARM) chips.
+	  many AT91 (ARM) chips.
 
 config SPI_AU1550
 	tristate "Au1550/Au1200/Au1300 SPI Controller"
diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 4a11fc0d4136..3f890d162934 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -768,14 +768,14 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
 		rxdesc = dmaengine_prep_slave_single(rxchan,
 						     as->dma_addr_rx_bbuf,
 						     xfer->len,
-						     DMA_FROM_DEVICE,
+						     DMA_DEV_TO_MEM,
 						     DMA_PREP_INTERRUPT |
 						     DMA_CTRL_ACK);
 	} else {
 		rxdesc = dmaengine_prep_slave_sg(rxchan,
 						 xfer->rx_sg.sgl,
 						 xfer->rx_sg.nents,
-						 DMA_FROM_DEVICE,
+						 DMA_DEV_TO_MEM,
 						 DMA_PREP_INTERRUPT |
 						 DMA_CTRL_ACK);
 	}
@@ -787,14 +787,14 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
 		memcpy(as->addr_tx_bbuf, xfer->tx_buf, xfer->len);
 		txdesc = dmaengine_prep_slave_single(txchan,
 						     as->dma_addr_tx_bbuf,
-						     xfer->len, DMA_TO_DEVICE,
+						     xfer->len, DMA_MEM_TO_DEV,
 						     DMA_PREP_INTERRUPT |
 						     DMA_CTRL_ACK);
 	} else {
 		txdesc = dmaengine_prep_slave_sg(txchan,
 						 xfer->tx_sg.sgl,
 						 xfer->tx_sg.nents,
-						 DMA_TO_DEVICE,
+						 DMA_MEM_TO_DEV,
 						 DMA_PREP_INTERRUPT |
 						 DMA_CTRL_ACK);
 	}
@@ -1512,6 +1512,11 @@ static void atmel_spi_init(struct atmel_spi *as)
 {
 	spi_writel(as, CR, SPI_BIT(SWRST));
 	spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */
+
+	/* It is recommended to enable FIFOs first thing after reset */
+	if (as->fifo_size)
+		spi_writel(as, CR, SPI_BIT(FIFOEN));
+
 	if (as->caps.has_wdrbt) {
 		spi_writel(as, MR, SPI_BIT(WDRBT) | SPI_BIT(MODFDIS)
 				| SPI_BIT(MSTR));
@@ -1522,9 +1527,6 @@ static void atmel_spi_init(struct atmel_spi *as)
 	if (as->use_pdc)
 		spi_writel(as, PTCR, SPI_BIT(RXTDIS) | SPI_BIT(TXTDIS));
 	spi_writel(as, CR, SPI_BIT(SPIEN));
-
-	if (as->fifo_size)
-		spi_writel(as, CR, SPI_BIT(FIFOEN));
 }
 
 static int atmel_spi_probe(struct platform_device *pdev)
diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c
index a172ab299e80..1596d35498c5 100644
--- a/drivers/spi/spi-bcm-qspi.c
+++ b/drivers/spi/spi-bcm-qspi.c
@@ -1247,7 +1247,7 @@ int bcm_qspi_probe(struct platform_device *pdev,
 		qspi->base[MSPI]  = devm_ioremap_resource(dev, res);
 		if (IS_ERR(qspi->base[MSPI])) {
 			ret = PTR_ERR(qspi->base[MSPI]);
-			goto qspi_probe_err;
+			goto qspi_resource_err;
 		}
 	} else {
 		goto qspi_resource_err;
@@ -1258,7 +1258,7 @@ int bcm_qspi_probe(struct platform_device *pdev,
 		qspi->base[BSPI]  = devm_ioremap_resource(dev, res);
 		if (IS_ERR(qspi->base[BSPI])) {
 			ret = PTR_ERR(qspi->base[BSPI]);
-			goto qspi_probe_err;
+			goto qspi_resource_err;
 		}
 		qspi->bspi_mode = true;
 	} else {
diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c
index 7428091d3f5b..1431cb98fe40 100644
--- a/drivers/spi/spi-bcm2835aux.c
+++ b/drivers/spi/spi-bcm2835aux.c
@@ -321,7 +321,6 @@ static int bcm2835aux_spi_transfer_one(struct spi_master *master,
 	struct bcm2835aux_spi *bs = spi_master_get_devdata(master);
 	unsigned long spi_hz, clk_hz, speed;
 	unsigned long spi_used_hz;
-	unsigned long long xfer_time_us;
 
 	/* calculate the registers to handle
 	 *
@@ -358,20 +357,21 @@ static int bcm2835aux_spi_transfer_one(struct spi_master *master,
 	bs->rx_len = tfr->len;
 	bs->pending = 0;
 
-	/* calculate the estimated time in us the transfer runs
-	 * note that there are are 2 idle clocks after each
-	 * chunk getting transferred - in our case the chunk size
-	 * is 3 bytes, so we approximate this by 9 bits/byte
+	/* Calculate the estimated time in us the transfer runs.  Note that
+	 * there are are 2 idle clocks cycles after each chunk getting
+	 * transferred - in our case the chunk size is 3 bytes, so we
+	 * approximate this by 9 cycles/byte.  This is used to find the number
+	 * of Hz per byte per polling limit.  E.g., we can transfer 1 byte in
+	 * 30 µs per 300,000 Hz of bus clock.
 	 */
-	xfer_time_us = tfr->len * 9 * 1000000;
-	do_div(xfer_time_us, spi_used_hz);
-
+#define HZ_PER_BYTE ((9 * 1000000) / BCM2835_AUX_SPI_POLLING_LIMIT_US)
 	/* run in polling mode for short transfers */
-	if (xfer_time_us < BCM2835_AUX_SPI_POLLING_LIMIT_US)
+	if (tfr->len < spi_used_hz / HZ_PER_BYTE)
 		return bcm2835aux_spi_transfer_one_poll(master, spi, tfr);
 
 	/* run in interrupt mode for all others */
 	return bcm2835aux_spi_transfer_one_irq(master, spi, tfr);
+#undef HZ_PER_BYTE
 }
 
 static int bcm2835aux_spi_prepare_message(struct spi_master *master,
diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c
index 837cb8d0bac6..3db905f5f345 100644
--- a/drivers/spi/spi-dw-mid.c
+++ b/drivers/spi/spi-dw-mid.c
@@ -112,10 +112,10 @@ static irqreturn_t dma_transfer(struct dw_spi *dws)
 	return IRQ_HANDLED;
 }
 
-static bool mid_spi_can_dma(struct spi_master *master, struct spi_device *spi,
-		struct spi_transfer *xfer)
+static bool mid_spi_can_dma(struct spi_controller *master,
+		struct spi_device *spi, struct spi_transfer *xfer)
 {
-	struct dw_spi *dws = spi_master_get_devdata(master);
+	struct dw_spi *dws = spi_controller_get_devdata(master);
 
 	if (!dws->dma_inited)
 		return false;
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 211cc7d75bf8..f693bfe95ab9 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -135,7 +135,7 @@ static inline void dw_spi_debugfs_remove(struct dw_spi *dws)
 
 static void dw_spi_set_cs(struct spi_device *spi, bool enable)
 {
-	struct dw_spi *dws = spi_master_get_devdata(spi->master);
+	struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
 	struct chip_data *chip = spi_get_ctldata(spi);
 
 	/* Chip select logic is inverted from spi_set_cs() */
@@ -250,8 +250,8 @@ static irqreturn_t interrupt_transfer(struct dw_spi *dws)
 
 static irqreturn_t dw_spi_irq(int irq, void *dev_id)
 {
-	struct spi_master *master = dev_id;
-	struct dw_spi *dws = spi_master_get_devdata(master);
+	struct spi_controller *master = dev_id;
+	struct dw_spi *dws = spi_controller_get_devdata(master);
 	u16 irq_status = dw_readl(dws, DW_SPI_ISR) & 0x3f;
 
 	if (!irq_status)
@@ -277,10 +277,10 @@ static int poll_transfer(struct dw_spi *dws)
 	return 0;
 }
 
-static int dw_spi_transfer_one(struct spi_master *master,
+static int dw_spi_transfer_one(struct spi_controller *master,
 		struct spi_device *spi, struct spi_transfer *transfer)
 {
-	struct dw_spi *dws = spi_master_get_devdata(master);
+	struct dw_spi *dws = spi_controller_get_devdata(master);
 	struct chip_data *chip = spi_get_ctldata(spi);
 	u8 imask = 0;
 	u16 txlevel = 0;
@@ -383,10 +383,10 @@ static int dw_spi_transfer_one(struct spi_master *master,
 	return 1;
 }
 
-static void dw_spi_handle_err(struct spi_master *master,
+static void dw_spi_handle_err(struct spi_controller *master,
 		struct spi_message *msg)
 {
-	struct dw_spi *dws = spi_master_get_devdata(master);
+	struct dw_spi *dws = spi_controller_get_devdata(master);
 
 	if (dws->dma_mapped)
 		dws->dma_ops->dma_stop(dws);
@@ -471,7 +471,7 @@ static void spi_hw_init(struct device *dev, struct dw_spi *dws)
 
 int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
 {
-	struct spi_master *master;
+	struct spi_controller *master;
 	int ret;
 
 	BUG_ON(dws == NULL);
@@ -518,8 +518,8 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
 		}
 	}
 
-	spi_master_set_devdata(master, dws);
-	ret = devm_spi_register_master(dev, master);
+	spi_controller_set_devdata(master, dws);
+	ret = devm_spi_register_controller(dev, master);
 	if (ret) {
 		dev_err(&master->dev, "problem registering spi master\n");
 		goto err_dma_exit;
@@ -534,7 +534,7 @@ err_dma_exit:
 	spi_enable_chip(dws, 0);
 	free_irq(dws->irq, master);
 err_free_master:
-	spi_master_put(master);
+	spi_controller_put(master);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(dw_spi_add_host);
@@ -556,7 +556,7 @@ int dw_spi_suspend_host(struct dw_spi *dws)
 {
 	int ret;
 
-	ret = spi_master_suspend(dws->master);
+	ret = spi_controller_suspend(dws->master);
 	if (ret)
 		return ret;
 
@@ -570,7 +570,7 @@ int dw_spi_resume_host(struct dw_spi *dws)
 	int ret;
 
 	spi_hw_init(&dws->master->dev, dws);
-	ret = spi_master_resume(dws->master);
+	ret = spi_controller_resume(dws->master);
 	if (ret)
 		dev_err(&dws->master->dev, "fail to start queue (%d)\n", ret);
 	return ret;
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h
index 5c07cf8f19e0..2cde2473b3e9 100644
--- a/drivers/spi/spi-dw.h
+++ b/drivers/spi/spi-dw.h
@@ -93,14 +93,14 @@ struct dw_spi_dma_ops {
 	int (*dma_init)(struct dw_spi *dws);
 	void (*dma_exit)(struct dw_spi *dws);
 	int (*dma_setup)(struct dw_spi *dws, struct spi_transfer *xfer);
-	bool (*can_dma)(struct spi_master *master, struct spi_device *spi,
+	bool (*can_dma)(struct spi_controller *master, struct spi_device *spi,
 			struct spi_transfer *xfer);
 	int (*dma_transfer)(struct dw_spi *dws, struct spi_transfer *xfer);
 	void (*dma_stop)(struct dw_spi *dws);
 };
 
 struct dw_spi {
-	struct spi_master	*master;
+	struct spi_controller	*master;
 	enum dw_ssi_type	type;
 
 	void __iomem		*regs;
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c
index 1c34c9314c8a..b85a93cad44a 100644
--- a/drivers/spi/spi-gpio.c
+++ b/drivers/spi/spi-gpio.c
@@ -2,6 +2,7 @@
  * SPI master driver using generic bitbanged GPIO
  *
  * Copyright (C) 2006,2008 David Brownell
+ * Copyright (C) 2017 Linus Walleij
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -16,10 +17,9 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/of_gpio.h>
 
 #include <linux/spi/spi.h>
 #include <linux/spi/spi_bitbang.h>
@@ -44,7 +44,11 @@ struct spi_gpio {
 	struct spi_bitbang		bitbang;
 	struct spi_gpio_platform_data	pdata;
 	struct platform_device		*pdev;
-	unsigned long			cs_gpios[0];
+	struct gpio_desc		*sck;
+	struct gpio_desc		*miso;
+	struct gpio_desc		*mosi;
+	struct gpio_desc		**cs_gpios;
+	bool				has_cs;
 };
 
 /*----------------------------------------------------------------------*/
@@ -77,13 +81,6 @@ struct spi_gpio {
 
 #define GENERIC_BITBANG	/* vs tight inlines */
 
-/* all functions referencing these symbols must define pdata */
-#define SPI_MISO_GPIO	((pdata)->miso)
-#define SPI_MOSI_GPIO	((pdata)->mosi)
-#define SPI_SCK_GPIO	((pdata)->sck)
-
-#define SPI_N_CHIPSEL	((pdata)->num_chipselect)
-
 #endif
 
 /*----------------------------------------------------------------------*/
@@ -105,25 +102,27 @@ spi_to_pdata(const struct spi_device *spi)
 	return &spi_to_spi_gpio(spi)->pdata;
 }
 
-/* this is #defined to avoid unused-variable warnings when inlining */
-#define pdata		spi_to_pdata(spi)
-
+/* These helpers are in turn called by the bitbang inlines */
 static inline void setsck(const struct spi_device *spi, int is_on)
 {
-	gpio_set_value_cansleep(SPI_SCK_GPIO, is_on);
+	struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
+
+	gpiod_set_value_cansleep(spi_gpio->sck, is_on);
 }
 
 static inline void setmosi(const struct spi_device *spi, int is_on)
 {
-	gpio_set_value_cansleep(SPI_MOSI_GPIO, is_on);
+	struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
+
+	gpiod_set_value_cansleep(spi_gpio->mosi, is_on);
 }
 
 static inline int getmiso(const struct spi_device *spi)
 {
-	return !!gpio_get_value_cansleep(SPI_MISO_GPIO);
-}
+	struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
 
-#undef pdata
+	return !!gpiod_get_value_cansleep(spi_gpio->miso);
+}
 
 /*
  * NOTE:  this clocks "as fast as we can".  It "should" be a function of the
@@ -216,123 +215,89 @@ static u32 spi_gpio_spec_txrx_word_mode3(struct spi_device *spi,
 static void spi_gpio_chipselect(struct spi_device *spi, int is_active)
 {
 	struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
-	unsigned long cs = spi_gpio->cs_gpios[spi->chip_select];
 
-	/* set initial clock polarity */
+	/* set initial clock line level */
 	if (is_active)
-		setsck(spi, spi->mode & SPI_CPOL);
+		gpiod_set_value_cansleep(spi_gpio->sck, spi->mode & SPI_CPOL);
+
+	/* Drive chip select line, if we have one */
+	if (spi_gpio->has_cs) {
+		struct gpio_desc *cs = spi_gpio->cs_gpios[spi->chip_select];
 
-	if (cs != SPI_GPIO_NO_CHIPSELECT) {
-		/* SPI is normally active-low */
-		gpio_set_value_cansleep(cs, (spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
+		/* SPI chip selects are normally active-low */
+		gpiod_set_value_cansleep(cs, (spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
 	}
 }
 
 static int spi_gpio_setup(struct spi_device *spi)
 {
-	unsigned long		cs;
+	struct gpio_desc	*cs;
 	int			status = 0;
 	struct spi_gpio		*spi_gpio = spi_to_spi_gpio(spi);
-	struct device_node	*np = spi->master->dev.of_node;
-
-	if (np) {
-		/*
-		 * In DT environments, the CS GPIOs have already been
-		 * initialized from the "cs-gpios" property of the node.
-		 */
-		cs = spi_gpio->cs_gpios[spi->chip_select];
-	} else {
-		/*
-		 * ... otherwise, take it from spi->controller_data
-		 */
-		cs = (uintptr_t) spi->controller_data;
-	}
 
-	if (!spi->controller_state) {
-		if (cs != SPI_GPIO_NO_CHIPSELECT) {
-			status = gpio_request(cs, dev_name(&spi->dev));
-			if (status)
-				return status;
-			status = gpio_direction_output(cs,
-					!(spi->mode & SPI_CS_HIGH));
-		}
-	}
-	if (!status) {
-		/* in case it was initialized from static board data */
-		spi_gpio->cs_gpios[spi->chip_select] = cs;
+	/*
+	 * The CS GPIOs have already been
+	 * initialized from the descriptor lookup.
+	 */
+	cs = spi_gpio->cs_gpios[spi->chip_select];
+	if (!spi->controller_state && cs)
+		status = gpiod_direction_output(cs,
+						!(spi->mode & SPI_CS_HIGH));
+
+	if (!status)
 		status = spi_bitbang_setup(spi);
-	}
 
-	if (status) {
-		if (!spi->controller_state && cs != SPI_GPIO_NO_CHIPSELECT)
-			gpio_free(cs);
-	}
 	return status;
 }
 
 static void spi_gpio_cleanup(struct spi_device *spi)
 {
-	struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
-	unsigned long cs = spi_gpio->cs_gpios[spi->chip_select];
-
-	if (cs != SPI_GPIO_NO_CHIPSELECT)
-		gpio_free(cs);
 	spi_bitbang_cleanup(spi);
 }
 
-static int spi_gpio_alloc(unsigned pin, const char *label, bool is_in)
-{
-	int value;
-
-	value = gpio_request(pin, label);
-	if (value == 0) {
-		if (is_in)
-			value = gpio_direction_input(pin);
-		else
-			value = gpio_direction_output(pin, 0);
-	}
-	return value;
-}
-
-static int spi_gpio_request(struct spi_gpio_platform_data *pdata,
-			    const char *label, u16 *res_flags)
+/*
+ * It can be convenient to use this driver with pins that have alternate
+ * functions associated with a "native" SPI controller if a driver for that
+ * controller is not available, or is missing important functionality.
+ *
+ * On platforms which can do so, configure MISO with a weak pullup unless
+ * there's an external pullup on that signal.  That saves power by avoiding
+ * floating signals.  (A weak pulldown would save power too, but many
+ * drivers expect to see all-ones data as the no slave "response".)
+ */
+static int spi_gpio_request(struct device *dev,
+			    struct spi_gpio *spi_gpio,
+			    unsigned int num_chipselects,
+			    u16 *mflags)
 {
-	int value;
-
-	/* NOTE:  SPI_*_GPIO symbols may reference "pdata" */
+	int i;
 
-	if (SPI_MOSI_GPIO != SPI_GPIO_NO_MOSI) {
-		value = spi_gpio_alloc(SPI_MOSI_GPIO, label, false);
-		if (value)
-			goto done;
-	} else {
+	spi_gpio->mosi = devm_gpiod_get_optional(dev, "mosi", GPIOD_OUT_LOW);
+	if (IS_ERR(spi_gpio->mosi))
+		return PTR_ERR(spi_gpio->mosi);
+	if (!spi_gpio->mosi)
 		/* HW configuration without MOSI pin */
-		*res_flags |= SPI_MASTER_NO_TX;
-	}
+		*mflags |= SPI_MASTER_NO_TX;
 
-	if (SPI_MISO_GPIO != SPI_GPIO_NO_MISO) {
-		value = spi_gpio_alloc(SPI_MISO_GPIO, label, true);
-		if (value)
-			goto free_mosi;
-	} else {
+	spi_gpio->miso = devm_gpiod_get_optional(dev, "miso", GPIOD_IN);
+	if (IS_ERR(spi_gpio->miso))
+		return PTR_ERR(spi_gpio->miso);
+	if (!spi_gpio->miso)
 		/* HW configuration without MISO pin */
-		*res_flags |= SPI_MASTER_NO_RX;
-	}
+		*mflags |= SPI_MASTER_NO_RX;
 
-	value = spi_gpio_alloc(SPI_SCK_GPIO, label, false);
-	if (value)
-		goto free_miso;
+	spi_gpio->sck = devm_gpiod_get(dev, "sck", GPIOD_OUT_LOW);
+	if (IS_ERR(spi_gpio->mosi))
+		return PTR_ERR(spi_gpio->mosi);
 
-	goto done;
+	for (i = 0; i < num_chipselects; i++) {
+		spi_gpio->cs_gpios[i] = devm_gpiod_get_index(dev, "cs",
+							     i, GPIOD_OUT_HIGH);
+		if (IS_ERR(spi_gpio->cs_gpios[i]))
+			return PTR_ERR(spi_gpio->cs_gpios[i]);
+	}
 
-free_miso:
-	if (SPI_MISO_GPIO != SPI_GPIO_NO_MISO)
-		gpio_free(SPI_MISO_GPIO);
-free_mosi:
-	if (SPI_MOSI_GPIO != SPI_GPIO_NO_MOSI)
-		gpio_free(SPI_MOSI_GPIO);
-done:
-	return value;
+	return 0;
 }
 
 #ifdef CONFIG_OF
@@ -358,26 +323,6 @@ static int spi_gpio_probe_dt(struct platform_device *pdev)
 	if (!pdata)
 		return -ENOMEM;
 
-	ret = of_get_named_gpio(np, "gpio-sck", 0);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "gpio-sck property not found\n");
-		goto error_free;
-	}
-	pdata->sck = ret;
-
-	ret = of_get_named_gpio(np, "gpio-miso", 0);
-	if (ret < 0) {
-		dev_info(&pdev->dev, "gpio-miso property not found, switching to no-rx mode\n");
-		pdata->miso = SPI_GPIO_NO_MISO;
-	} else
-		pdata->miso = ret;
-
-	ret = of_get_named_gpio(np, "gpio-mosi", 0);
-	if (ret < 0) {
-		dev_info(&pdev->dev, "gpio-mosi property not found, switching to no-tx mode\n");
-		pdata->mosi = SPI_GPIO_NO_MOSI;
-	} else
-		pdata->mosi = ret;
 
 	ret = of_property_read_u32(np, "num-chipselects", &tmp);
 	if (ret < 0) {
@@ -409,7 +354,6 @@ static int spi_gpio_probe(struct platform_device *pdev)
 	struct spi_gpio_platform_data	*pdata;
 	u16 master_flags = 0;
 	bool use_of = 0;
-	int num_devices;
 
 	status = spi_gpio_probe_dt(pdev);
 	if (status < 0)
@@ -423,59 +367,41 @@ static int spi_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 #endif
 
-	if (use_of && !SPI_N_CHIPSEL)
-		num_devices = 1;
-	else
-		num_devices = SPI_N_CHIPSEL;
-
-	status = spi_gpio_request(pdata, dev_name(&pdev->dev), &master_flags);
-	if (status < 0)
-		return status;
+	master = spi_alloc_master(&pdev->dev, sizeof(*spi_gpio));
+	if (!master)
+		return -ENOMEM;
 
-	master = spi_alloc_master(&pdev->dev, sizeof(*spi_gpio) +
-					(sizeof(unsigned long) * num_devices));
-	if (!master) {
-		status = -ENOMEM;
-		goto gpio_free;
-	}
 	spi_gpio = spi_master_get_devdata(master);
+
+	spi_gpio->cs_gpios = devm_kzalloc(&pdev->dev,
+				pdata->num_chipselect * sizeof(*spi_gpio->cs_gpios),
+				GFP_KERNEL);
+	if (!spi_gpio->cs_gpios)
+		return -ENOMEM;
+
 	platform_set_drvdata(pdev, spi_gpio);
 
+	/* Determine if we have chip selects connected */
+	spi_gpio->has_cs = !!pdata->num_chipselect;
+
 	spi_gpio->pdev = pdev;
 	if (pdata)
 		spi_gpio->pdata = *pdata;
 
+	status = spi_gpio_request(&pdev->dev, spi_gpio,
+				  pdata->num_chipselect, &master_flags);
+	if (status)
+		return status;
+
 	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
 	master->flags = master_flags;
 	master->bus_num = pdev->id;
-	master->num_chipselect = num_devices;
+	/* The master needs to think there is a chipselect even if not connected */
+	master->num_chipselect = spi_gpio->has_cs ? pdata->num_chipselect : 1;
 	master->setup = spi_gpio_setup;
 	master->cleanup = spi_gpio_cleanup;
 #ifdef CONFIG_OF
 	master->dev.of_node = pdev->dev.of_node;
-
-	if (use_of) {
-		int i;
-		struct device_node *np = pdev->dev.of_node;
-
-		/*
-		 * In DT environments, take the CS GPIO from the "cs-gpios"
-		 * property of the node.
-		 */
-
-		if (!SPI_N_CHIPSEL)
-			spi_gpio->cs_gpios[0] = SPI_GPIO_NO_CHIPSELECT;
-		else
-			for (i = 0; i < SPI_N_CHIPSEL; i++) {
-				status = of_get_named_gpio(np, "cs-gpios", i);
-				if (status < 0) {
-					dev_err(&pdev->dev,
-						"invalid cs-gpios property\n");
-					goto gpio_free;
-				}
-				spi_gpio->cs_gpios[i] = status;
-			}
-	}
 #endif
 
 	spi_gpio->bitbang.master = master;
@@ -496,15 +422,8 @@ static int spi_gpio_probe(struct platform_device *pdev)
 	spi_gpio->bitbang.flags = SPI_CS_HIGH;
 
 	status = spi_bitbang_start(&spi_gpio->bitbang);
-	if (status < 0) {
-gpio_free:
-		if (SPI_MISO_GPIO != SPI_GPIO_NO_MISO)
-			gpio_free(SPI_MISO_GPIO);
-		if (SPI_MOSI_GPIO != SPI_GPIO_NO_MOSI)
-			gpio_free(SPI_MOSI_GPIO);
-		gpio_free(SPI_SCK_GPIO);
+	if (status)
 		spi_master_put(master);
-	}
 
 	return status;
 }
@@ -520,11 +439,6 @@ static int spi_gpio_remove(struct platform_device *pdev)
 	/* stop() unregisters child devices too */
 	spi_bitbang_stop(&spi_gpio->bitbang);
 
-	if (SPI_MISO_GPIO != SPI_GPIO_NO_MISO)
-		gpio_free(SPI_MISO_GPIO);
-	if (SPI_MOSI_GPIO != SPI_GPIO_NO_MOSI)
-		gpio_free(SPI_MOSI_GPIO);
-	gpio_free(SPI_SCK_GPIO);
 	spi_master_put(spi_gpio->bitbang.master);
 
 	return 0;
diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
index deca63e82ff6..d01a6adc726e 100644
--- a/drivers/spi/spi-orion.c
+++ b/drivers/spi/spi-orion.c
@@ -90,14 +90,19 @@ struct orion_direct_acc {
 	u32			size;
 };
 
+struct orion_child_options {
+	struct orion_direct_acc direct_access;
+};
+
 struct orion_spi {
 	struct spi_master	*master;
 	void __iomem		*base;
 	struct clk              *clk;
 	struct clk              *axi_clk;
 	const struct orion_spi_dev *devdata;
+	int			unused_hw_gpio;
 
-	struct orion_direct_acc	direct_access[ORION_NUM_CHIPSELECTS];
+	struct orion_child_options	child[ORION_NUM_CHIPSELECTS];
 };
 
 static inline void __iomem *spi_reg(struct orion_spi *orion_spi, u32 reg)
@@ -324,13 +329,13 @@ static void orion_spi_set_cs(struct spi_device *spi, bool enable)
 	struct orion_spi *orion_spi;
 	int cs;
 
+	orion_spi = spi_master_get_devdata(spi->master);
+
 	if (gpio_is_valid(spi->cs_gpio))
-		cs = 0;
+		cs = orion_spi->unused_hw_gpio;
 	else
 		cs = spi->chip_select;
 
-	orion_spi = spi_master_get_devdata(spi->master);
-
 	orion_spi_clrbits(orion_spi, ORION_SPI_IF_CTRL_REG, ORION_SPI_CS_MASK);
 	orion_spi_setbits(orion_spi, ORION_SPI_IF_CTRL_REG,
 				ORION_SPI_CS(cs));
@@ -435,7 +440,7 @@ orion_spi_write_read(struct spi_device *spi, struct spi_transfer *xfer)
 	 * Use SPI direct write mode if base address is available. Otherwise
 	 * fall back to PIO mode for this transfer.
 	 */
-	if ((orion_spi->direct_access[cs].vaddr) && (xfer->tx_buf) &&
+	if ((orion_spi->child[cs].direct_access.vaddr) && (xfer->tx_buf) &&
 	    (word_len == 8)) {
 		unsigned int cnt = count / 4;
 		unsigned int rem = count % 4;
@@ -444,12 +449,12 @@ orion_spi_write_read(struct spi_device *spi, struct spi_transfer *xfer)
 		 * Send the TX-data to the SPI device via the direct
 		 * mapped address window
 		 */
-		iowrite32_rep(orion_spi->direct_access[cs].vaddr,
+		iowrite32_rep(orion_spi->child[cs].direct_access.vaddr,
 			      xfer->tx_buf, cnt);
 		if (rem) {
 			u32 *buf = (u32 *)xfer->tx_buf;
 
-			iowrite8_rep(orion_spi->direct_access[cs].vaddr,
+			iowrite8_rep(orion_spi->child[cs].direct_access.vaddr,
 				     &buf[cnt], rem);
 		}
 
@@ -498,6 +503,9 @@ static int orion_spi_transfer_one(struct spi_master *master,
 
 static int orion_spi_setup(struct spi_device *spi)
 {
+	if (gpio_is_valid(spi->cs_gpio)) {
+		gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
+	}
 	return orion_spi_setup_transfer(spi, NULL);
 }
 
@@ -620,6 +628,7 @@ static int orion_spi_probe(struct platform_device *pdev)
 
 	spi = spi_master_get_devdata(master);
 	spi->master = master;
+	spi->unused_hw_gpio = -1;
 
 	of_id = of_match_device(orion_spi_of_match_table, &pdev->dev);
 	devdata = (of_id) ? of_id->data : &orion_spi_dev_data;
@@ -702,14 +711,14 @@ static int orion_spi_probe(struct platform_device *pdev)
 		 * This needs to get extended for the direct SPI-NOR / SPI-NAND
 		 * support, once this gets implemented.
 		 */
-		spi->direct_access[cs].vaddr = devm_ioremap(&pdev->dev,
+		spi->child[cs].direct_access.vaddr = devm_ioremap(&pdev->dev,
 							    r->start,
 							    PAGE_SIZE);
-		if (!spi->direct_access[cs].vaddr) {
+		if (!spi->child[cs].direct_access.vaddr) {
 			status = -ENOMEM;
 			goto out_rel_axi_clk;
 		}
-		spi->direct_access[cs].size = PAGE_SIZE;
+		spi->child[cs].direct_access.size = PAGE_SIZE;
 
 		dev_info(&pdev->dev, "CS%d configured for direct access\n", cs);
 	}
@@ -731,8 +740,44 @@ static int orion_spi_probe(struct platform_device *pdev)
 	if (status < 0)
 		goto out_rel_pm;
 
+	if (master->cs_gpios) {
+		int i;
+		for (i = 0; i < master->num_chipselect; ++i) {
+			char *gpio_name;
+
+			if (!gpio_is_valid(master->cs_gpios[i])) {
+				continue;
+			}
+
+			gpio_name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+					"%s-CS%d", dev_name(&pdev->dev), i);
+			if (!gpio_name) {
+				status = -ENOMEM;
+				goto out_rel_master;
+			}
+
+			status = devm_gpio_request(&pdev->dev,
+					master->cs_gpios[i], gpio_name);
+			if (status) {
+				dev_err(&pdev->dev,
+					"Can't request GPIO for CS %d\n",
+					master->cs_gpios[i]);
+				goto out_rel_master;
+			}
+			if (spi->unused_hw_gpio == -1) {
+				dev_info(&pdev->dev,
+					"Selected unused HW CS#%d for any GPIO CSes\n",
+					i);
+				spi->unused_hw_gpio = i;
+			}
+		}
+	}
+
+
 	return status;
 
+out_rel_master:
+	spi_unregister_master(master);
 out_rel_pm:
 	pm_runtime_disable(&pdev->dev);
 out_rel_axi_clk:
diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c
index 04f3eecf5cf3..3d7f66080c57 100644
--- a/drivers/spi/spi-pxa2xx-dma.c
+++ b/drivers/spi/spi-pxa2xx-dma.c
@@ -191,7 +191,7 @@ int pxa2xx_spi_dma_setup(struct driver_data *drv_data)
 {
 	struct pxa2xx_spi_master *pdata = drv_data->master_info;
 	struct device *dev = &drv_data->pdev->dev;
-	struct spi_master *master = drv_data->master;
+	struct spi_controller *master = drv_data->master;
 	dma_cap_mask_t mask;
 
 	dma_cap_zero(mask);
@@ -215,7 +215,7 @@ int pxa2xx_spi_dma_setup(struct driver_data *drv_data)
 
 void pxa2xx_spi_dma_release(struct driver_data *drv_data)
 {
-	struct spi_master *master = drv_data->master;
+	struct spi_controller *master = drv_data->master;
 
 	if (master->dma_rx) {
 		dmaengine_terminate_sync(master->dma_rx);
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index b0822d1dba29..82dcb88fcfba 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -415,10 +415,17 @@ static void cs_deassert(struct driver_data *drv_data)
 {
 	struct chip_data *chip =
 		spi_get_ctldata(drv_data->master->cur_msg->spi);
+	unsigned long timeout;
 
 	if (drv_data->ssp_type == CE4100_SSP)
 		return;
 
+	/* Wait until SSP becomes idle before deasserting the CS */
+	timeout = jiffies + msecs_to_jiffies(10);
+	while (pxa2xx_spi_read(drv_data, SSSR) & SSSR_BSY &&
+	       !time_after(jiffies, timeout))
+		cpu_relax();
+
 	if (chip->cs_control) {
 		chip->cs_control(PXA2XX_CS_DEASSERT);
 		return;
@@ -563,7 +570,6 @@ static void giveback(struct driver_data *drv_data)
 {
 	struct spi_transfer* last_transfer;
 	struct spi_message *msg;
-	unsigned long timeout;
 
 	msg = drv_data->master->cur_msg;
 	drv_data->cur_transfer = NULL;
@@ -575,12 +581,6 @@ static void giveback(struct driver_data *drv_data)
 	if (last_transfer->delay_usecs)
 		udelay(last_transfer->delay_usecs);
 
-	/* Wait until SSP becomes idle before deasserting the CS */
-	timeout = jiffies + msecs_to_jiffies(10);
-	while (pxa2xx_spi_read(drv_data, SSSR) & SSSR_BSY &&
-	       !time_after(jiffies, timeout))
-		cpu_relax();
-
 	/* Drop chip select UNLESS cs_change is true or we are returning
 	 * a message with an error, or next message is for another chip
 	 */
@@ -962,7 +962,7 @@ static unsigned int pxa2xx_ssp_get_clk_div(struct driver_data *drv_data,
 	return clk_div << 8;
 }
 
-static bool pxa2xx_spi_can_dma(struct spi_master *master,
+static bool pxa2xx_spi_can_dma(struct spi_controller *master,
 			       struct spi_device *spi,
 			       struct spi_transfer *xfer)
 {
@@ -976,7 +976,7 @@ static bool pxa2xx_spi_can_dma(struct spi_master *master,
 static void pump_transfers(unsigned long data)
 {
 	struct driver_data *drv_data = (struct driver_data *)data;
-	struct spi_master *master = drv_data->master;
+	struct spi_controller *master = drv_data->master;
 	struct spi_message *message = master->cur_msg;
 	struct chip_data *chip = spi_get_ctldata(message->spi);
 	u32 dma_thresh = chip->dma_threshold;
@@ -1182,10 +1182,10 @@ static void pump_transfers(unsigned long data)
 	pxa2xx_spi_write(drv_data, SSCR1, cr1);
 }
 
-static int pxa2xx_spi_transfer_one_message(struct spi_master *master,
+static int pxa2xx_spi_transfer_one_message(struct spi_controller *master,
 					   struct spi_message *msg)
 {
-	struct driver_data *drv_data = spi_master_get_devdata(master);
+	struct driver_data *drv_data = spi_controller_get_devdata(master);
 
 	/* Initial message state*/
 	msg->state = START_STATE;
@@ -1198,9 +1198,9 @@ static int pxa2xx_spi_transfer_one_message(struct spi_master *master,
 	return 0;
 }
 
-static int pxa2xx_spi_unprepare_transfer(struct spi_master *master)
+static int pxa2xx_spi_unprepare_transfer(struct spi_controller *master)
 {
-	struct driver_data *drv_data = spi_master_get_devdata(master);
+	struct driver_data *drv_data = spi_controller_get_devdata(master);
 
 	/* Disable the SSP now */
 	pxa2xx_spi_write(drv_data, SSCR0,
@@ -1212,7 +1212,8 @@ static int pxa2xx_spi_unprepare_transfer(struct spi_master *master)
 static int setup_cs(struct spi_device *spi, struct chip_data *chip,
 		    struct pxa2xx_spi_chip *chip_info)
 {
-	struct driver_data *drv_data = spi_master_get_devdata(spi->master);
+	struct driver_data *drv_data =
+		spi_controller_get_devdata(spi->controller);
 	struct gpio_desc *gpiod;
 	int err = 0;
 
@@ -1270,7 +1271,8 @@ static int setup(struct spi_device *spi)
 	struct pxa2xx_spi_chip *chip_info;
 	struct chip_data *chip;
 	const struct lpss_config *config;
-	struct driver_data *drv_data = spi_master_get_devdata(spi->master);
+	struct driver_data *drv_data =
+		spi_controller_get_devdata(spi->controller);
 	uint tx_thres, tx_hi_thres, rx_thres;
 
 	switch (drv_data->ssp_type) {
@@ -1410,7 +1412,8 @@ static int setup(struct spi_device *spi)
 static void cleanup(struct spi_device *spi)
 {
 	struct chip_data *chip = spi_get_ctldata(spi);
-	struct driver_data *drv_data = spi_master_get_devdata(spi->master);
+	struct driver_data *drv_data =
+		spi_controller_get_devdata(spi->controller);
 
 	if (!chip)
 		return;
@@ -1575,9 +1578,10 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev)
 }
 #endif
 
-static int pxa2xx_spi_fw_translate_cs(struct spi_master *master, unsigned cs)
+static int pxa2xx_spi_fw_translate_cs(struct spi_controller *master,
+				      unsigned int cs)
 {
-	struct driver_data *drv_data = spi_master_get_devdata(master);
+	struct driver_data *drv_data = spi_controller_get_devdata(master);
 
 	if (has_acpi_companion(&drv_data->pdev->dev)) {
 		switch (drv_data->ssp_type) {
@@ -1602,7 +1606,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct pxa2xx_spi_master *platform_info;
-	struct spi_master *master;
+	struct spi_controller *master;
 	struct driver_data *drv_data;
 	struct ssp_device *ssp;
 	const struct lpss_config *config;
@@ -1633,7 +1637,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 		pxa_ssp_free(ssp);
 		return -ENOMEM;
 	}
-	drv_data = spi_master_get_devdata(master);
+	drv_data = spi_controller_get_devdata(master);
 	drv_data->master = master;
 	drv_data->master_info = platform_info;
 	drv_data->pdev = pdev;
@@ -1651,7 +1655,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 	master->unprepare_transfer_hardware = pxa2xx_spi_unprepare_transfer;
 	master->fw_translate_cs = pxa2xx_spi_fw_translate_cs;
 	master->auto_runtime_pm = true;
-	master->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX;
+	master->flags = SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX;
 
 	drv_data->ssp_type = ssp->type;
 
@@ -1793,7 +1797,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 
 	/* Register with the SPI framework */
 	platform_set_drvdata(pdev, drv_data);
-	status = devm_spi_register_master(&pdev->dev, master);
+	status = devm_spi_register_controller(&pdev->dev, master);
 	if (status != 0) {
 		dev_err(&pdev->dev, "problem registering spi master\n");
 		goto out_error_clock_enabled;
@@ -1802,12 +1806,14 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 	return status;
 
 out_error_clock_enabled:
+	pm_runtime_put_noidle(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
 	clk_disable_unprepare(ssp->clk);
 	pxa2xx_spi_dma_release(drv_data);
 	free_irq(ssp->irq, drv_data);
 
 out_error_master_alloc:
-	spi_master_put(master);
+	spi_controller_put(master);
 	pxa_ssp_free(ssp);
 	return status;
 }
@@ -1858,7 +1864,7 @@ static int pxa2xx_spi_suspend(struct device *dev)
 	struct ssp_device *ssp = drv_data->ssp;
 	int status;
 
-	status = spi_master_suspend(drv_data->master);
+	status = spi_controller_suspend(drv_data->master);
 	if (status != 0)
 		return status;
 	pxa2xx_spi_write(drv_data, SSCR0, 0);
@@ -1884,7 +1890,7 @@ static int pxa2xx_spi_resume(struct device *dev)
 		lpss_ssp_setup(drv_data);
 
 	/* Start the queue running */
-	status = spi_master_resume(drv_data->master);
+	status = spi_controller_resume(drv_data->master);
 	if (status != 0) {
 		dev_err(dev, "problem starting queue (%d)\n", status);
 		return status;
diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h
index 94f7b0713281..513ec6c6e25b 100644
--- a/drivers/spi/spi-pxa2xx.h
+++ b/drivers/spi/spi-pxa2xx.h
@@ -31,7 +31,7 @@ struct driver_data {
 
 	/* SPI framework hookup */
 	enum pxa_ssp_type ssp_type;
-	struct spi_master *master;
+	struct spi_controller *master;
 
 	/* PXA hookup */
 	struct pxa2xx_spi_master *master_info;
diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c
index 0835a8d88fb8..95dc4d78618d 100644
--- a/drivers/spi/spi-rspi.c
+++ b/drivers/spi/spi-rspi.c
@@ -535,7 +535,7 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx,
 	/* First prepare and submit the DMA request(s), as this may fail */
 	if (rx) {
 		desc_rx = dmaengine_prep_slave_sg(rspi->master->dma_rx,
-					rx->sgl, rx->nents, DMA_FROM_DEVICE,
+					rx->sgl, rx->nents, DMA_DEV_TO_MEM,
 					DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 		if (!desc_rx) {
 			ret = -EAGAIN;
@@ -555,7 +555,7 @@ static int rspi_dma_transfer(struct rspi_data *rspi, struct sg_table *tx,
 
 	if (tx) {
 		desc_tx = dmaengine_prep_slave_sg(rspi->master->dma_tx,
-					tx->sgl, tx->nents, DMA_TO_DEVICE,
+					tx->sgl, tx->nents, DMA_MEM_TO_DEV,
 					DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 		if (!desc_tx) {
 			ret = -EAGAIN;
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index b33a727a0158..7b213faa0a2b 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -779,8 +779,14 @@ static int spi_map_buf(struct spi_controller *ctlr, struct device *dev,
 	for (i = 0; i < sgs; i++) {
 
 		if (vmalloced_buf || kmap_buf) {
-			min = min_t(size_t,
-				    len, desc_len - offset_in_page(buf));
+			/*
+			 * Next scatterlist entry size is the minimum between
+			 * the desc_len and the remaining buffer length that
+			 * fits in a page.
+			 */
+			min = min_t(size_t, desc_len,
+				    min_t(size_t, len,
+					  PAGE_SIZE - offset_in_page(buf)));
 			if (vmalloced_buf)
 				vm_page = vmalloc_to_page(buf);
 			else
@@ -2254,12 +2260,6 @@ void spi_unregister_controller(struct spi_controller *ctlr)
 	mutex_lock(&board_lock);
 	found = idr_find(&spi_master_idr, id);
 	mutex_unlock(&board_lock);
-	if (found != ctlr) {
-		dev_dbg(&ctlr->dev,
-			"attempting to delete unregistered controller [%s]\n",
-			dev_name(&ctlr->dev));
-		return;
-	}
 	if (ctlr->queued) {
 		if (spi_destroy_queue(ctlr))
 			dev_err(&ctlr->dev, "queue remove failed\n");
@@ -2272,7 +2272,8 @@ void spi_unregister_controller(struct spi_controller *ctlr)
 	device_unregister(&ctlr->dev);
 	/* free bus id */
 	mutex_lock(&board_lock);
-	idr_remove(&spi_master_idr, id);
+	if (found == ctlr)
+		idr_remove(&spi_master_idr, id);
 	mutex_unlock(&board_lock);
 }
 EXPORT_SYMBOL_GPL(spi_unregister_controller);
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-09-22 22:38:16 +0000