spi: Use devm_clk_get_*() helper function to

Merge series from Li Zetao <lizetao1@huawei.com>:

Commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared
and enabled clocks") provides a new helper function for prepared and
enabled clocks when a driver keeps a clock prepared (or enabled) during
the whole lifetime of the driver. So where drivers get clocks and enable
them immediately, it can be combined into a single function
devm_clk_get_*(). Moreover, the unprepare and disable function
has been registered to devm_clk_state, and before devm_clk_state is
released, the clocks will be unprepareed and disable, so it is unnecessary
to unprepare and disable clocks explicitly when remove drivers or in the
error handling path.

drivers/spi/spi-ar934x.c

@@ -168,27 +168,21 @@ static int ar934x_spi_probe(struct platform_device *pdev)
 	struct ar934x_spi *sp;
 	void __iomem *base;
 	struct clk *clk;
-	int ret;
 
 	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
-	clk = devm_clk_get(&pdev->dev, NULL);
+	clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
 		dev_err(&pdev->dev, "failed to get clock\n");
 		return PTR_ERR(clk);
 	}
 
-	ret = clk_prepare_enable(clk);
-	if (ret)
-		return ret;
-
 	ctlr = devm_spi_alloc_host(&pdev->dev, sizeof(*sp));
 	if (!ctlr) {
 		dev_info(&pdev->dev, "failed to allocate spi controller\n");
-		ret = -ENOMEM;
-		goto err_clk_disable;
+		return -ENOMEM;
 	}
 
 	/* disable flash mapping and expose spi controller registers */
@@ -212,25 +206,15 @@ static int ar934x_spi_probe(struct platform_device *pdev)
 	sp->clk_freq = clk_get_rate(clk);
 	sp->ctlr = ctlr;
 
-	ret = spi_register_controller(ctlr);
-	if (!ret)
-		return 0;
-
-err_clk_disable:
-	clk_disable_unprepare(clk);
-	return ret;
+	return spi_register_controller(ctlr);
 }
 
 static void ar934x_spi_remove(struct platform_device *pdev)
 {
 	struct spi_controller *ctlr;
-	struct ar934x_spi *sp;
 
 	ctlr = dev_get_drvdata(&pdev->dev);
-	sp = spi_controller_get_devdata(ctlr);
-
 	spi_unregister_controller(ctlr);
-	clk_disable_unprepare(sp->clk);
 }
 
 static struct platform_driver ar934x_spi_driver = {

drivers/spi/spi-armada-3700.c

@@ -865,18 +865,12 @@ static int a3700_spi_probe(struct platform_device *pdev)
 
 	init_completion(&spi->done);
 
-	spi->clk = devm_clk_get(dev, NULL);
+	spi->clk = devm_clk_get_prepared(dev, NULL);
 	if (IS_ERR(spi->clk)) {
 		dev_err(dev, "could not find clk: %ld\n", PTR_ERR(spi->clk));
 		goto error;
 	}
 
-	ret = clk_prepare(spi->clk);
-	if (ret) {
-		dev_err(dev, "could not prepare clk: %d\n", ret);
-		goto error;
-	}
-
 	host->max_speed_hz = min_t(unsigned long, A3700_SPI_MAX_SPEED_HZ,
 					clk_get_rate(spi->clk));
 	host->min_speed_hz = DIV_ROUND_UP(clk_get_rate(spi->clk),
@@ -888,40 +882,29 @@ static int a3700_spi_probe(struct platform_device *pdev)
 			       dev_name(dev), host);
 	if (ret) {
 		dev_err(dev, "could not request IRQ: %d\n", ret);
-		goto error_clk;
+		goto error;
 	}
 
 	ret = devm_spi_register_controller(dev, host);
 	if (ret) {
 		dev_err(dev, "Failed to register host\n");
-		goto error_clk;
+		goto error;
 	}
 
 	return 0;
 
-error_clk:
-	clk_unprepare(spi->clk);
 error:
 	spi_controller_put(host);
 out:
 	return ret;
 }
 
-static void a3700_spi_remove(struct platform_device *pdev)
-{
-	struct spi_controller *host = platform_get_drvdata(pdev);
-	struct a3700_spi *spi = spi_controller_get_devdata(host);
-
-	clk_unprepare(spi->clk);
-}
-
 static struct platform_driver a3700_spi_driver = {
 	.driver = {
 		.name	= DRIVER_NAME,
 		.of_match_table = of_match_ptr(a3700_spi_dt_ids),
 	},
 	.probe		= a3700_spi_probe,
-	.remove_new	= a3700_spi_remove,
 };
 
 module_platform_driver(a3700_spi_driver);

drivers/spi/spi-aspeed-smc.c

@@ -748,7 +748,7 @@ static int aspeed_spi_probe(struct platform_device *pdev)
 	aspi->ahb_window_size = resource_size(res);
 	aspi->ahb_base_phy = res->start;
 
-	aspi->clk = devm_clk_get(&pdev->dev, NULL);
+	aspi->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(aspi->clk)) {
 		dev_err(dev, "missing clock\n");
 		return PTR_ERR(aspi->clk);
@@ -760,12 +760,6 @@ static int aspeed_spi_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	ret = clk_prepare_enable(aspi->clk);
-	if (ret) {
-		dev_err(dev, "can not enable the clock\n");
-		return ret;
-	}
-
 	/* IRQ is for DMA, which the driver doesn't support yet */
 
 	ctlr->mode_bits = SPI_RX_DUAL | SPI_TX_DUAL | data->mode_bits;
@@ -777,14 +771,9 @@ static int aspeed_spi_probe(struct platform_device *pdev)
 	ctlr->dev.of_node = dev->of_node;
 
 	ret = devm_spi_register_controller(dev, ctlr);
-	if (ret) {
+	if (ret)
 		dev_err(&pdev->dev, "spi_register_controller failed\n");
-		goto disable_clk;
-	}
-	return 0;
 
-disable_clk:
-	clk_disable_unprepare(aspi->clk);
 	return ret;
 }
 
@@ -793,7 +782,6 @@ static void aspeed_spi_remove(struct platform_device *pdev)
 	struct aspeed_spi *aspi = platform_get_drvdata(pdev);
 
 	aspeed_spi_enable(aspi, false);
-	clk_disable_unprepare(aspi->clk);
 }
 
 /*

drivers/spi/spi-ath79.c

@@ -200,20 +200,16 @@ static int ath79_spi_probe(struct platform_device *pdev)
 		goto err_put_host;
 	}
 
-	sp->clk = devm_clk_get(&pdev->dev, "ahb");
+	sp->clk = devm_clk_get_enabled(&pdev->dev, "ahb");
 	if (IS_ERR(sp->clk)) {
 		ret = PTR_ERR(sp->clk);
 		goto err_put_host;
 	}
 
-	ret = clk_prepare_enable(sp->clk);
-	if (ret)
-		goto err_put_host;
-
 	rate = DIV_ROUND_UP(clk_get_rate(sp->clk), MHZ);
 	if (!rate) {
 		ret = -EINVAL;
-		goto err_clk_disable;
+		goto err_put_host;
 	}
 
 	sp->rrw_delay = ATH79_SPI_RRW_DELAY_FACTOR / rate;
@@ -229,8 +225,6 @@ static int ath79_spi_probe(struct platform_device *pdev)
 
 err_disable:
 	ath79_spi_disable(sp);
-err_clk_disable:
-	clk_disable_unprepare(sp->clk);
 err_put_host:
 	spi_controller_put(host);
 
@@ -243,7 +237,6 @@ static void ath79_spi_remove(struct platform_device *pdev)
 
 	spi_bitbang_stop(&sp->bitbang);
 	ath79_spi_disable(sp);
-	clk_disable_unprepare(sp->clk);
 	spi_controller_put(sp->bitbang.master);
 }
 

drivers/spi/spi-axi-spi-engine.c

@@ -485,30 +485,22 @@ static int spi_engine_probe(struct platform_device *pdev)
 
 	spin_lock_init(&spi_engine->lock);
 
-	spi_engine->clk = devm_clk_get(&pdev->dev, "s_axi_aclk");
+	spi_engine->clk = devm_clk_get_enabled(&pdev->dev, "s_axi_aclk");
 	if (IS_ERR(spi_engine->clk)) {
 		ret = PTR_ERR(spi_engine->clk);
 		goto err_put_host;
 	}
 
-	spi_engine->ref_clk = devm_clk_get(&pdev->dev, "spi_clk");
+	spi_engine->ref_clk = devm_clk_get_enabled(&pdev->dev, "spi_clk");
 	if (IS_ERR(spi_engine->ref_clk)) {
 		ret = PTR_ERR(spi_engine->ref_clk);
 		goto err_put_host;
 	}
 
-	ret = clk_prepare_enable(spi_engine->clk);
-	if (ret)
-		goto err_put_host;
-
-	ret = clk_prepare_enable(spi_engine->ref_clk);
-	if (ret)
-		goto err_clk_disable;
-
 	spi_engine->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spi_engine->base)) {
 		ret = PTR_ERR(spi_engine->base);
-		goto err_ref_clk_disable;
+		goto err_put_host;
 	}
 
 	version = readl(spi_engine->base + SPI_ENGINE_REG_VERSION);
@@ -518,7 +510,7 @@ static int spi_engine_probe(struct platform_device *pdev)
 			SPI_ENGINE_VERSION_MINOR(version),
 			SPI_ENGINE_VERSION_PATCH(version));
 		ret = -ENODEV;
-		goto err_ref_clk_disable;
+		goto err_put_host;
 	}
 
 	writel_relaxed(0x00, spi_engine->base + SPI_ENGINE_REG_RESET);
@@ -527,7 +519,7 @@ static int spi_engine_probe(struct platform_device *pdev)
 
 	ret = request_irq(irq, spi_engine_irq, 0, pdev->name, host);
 	if (ret)
-		goto err_ref_clk_disable;
+		goto err_put_host;
 
 	host->dev.of_node = pdev->dev.of_node;
 	host->mode_bits = SPI_CPOL | SPI_CPHA | SPI_3WIRE;
@@ -545,10 +537,6 @@ static int spi_engine_probe(struct platform_device *pdev)
 	return 0;
 err_free_irq:
 	free_irq(irq, host);
-err_ref_clk_disable:
-	clk_disable_unprepare(spi_engine->ref_clk);
-err_clk_disable:
-	clk_disable_unprepare(spi_engine->clk);
 err_put_host:
 	spi_controller_put(host);
 	return ret;
@@ -569,9 +557,6 @@ static void spi_engine_remove(struct platform_device *pdev)
 	writel_relaxed(0xff, spi_engine->base + SPI_ENGINE_REG_INT_PENDING);
 	writel_relaxed(0x00, spi_engine->base + SPI_ENGINE_REG_INT_ENABLE);
 	writel_relaxed(0x01, spi_engine->base + SPI_ENGINE_REG_RESET);
-
-	clk_disable_unprepare(spi_engine->ref_clk);
-	clk_disable_unprepare(spi_engine->clk);
 }
 
 static const struct of_device_id spi_engine_match_table[] = {

drivers/spi/spi-bcm2835.c

@@ -1352,7 +1352,7 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
 	if (IS_ERR(bs->regs))
 		return PTR_ERR(bs->regs);
 
-	bs->clk = devm_clk_get(&pdev->dev, NULL);
+	bs->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(bs->clk))
 		return dev_err_probe(&pdev->dev, PTR_ERR(bs->clk),
 				     "could not get clk\n");
@@ -1363,14 +1363,11 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
 	if (bs->irq < 0)
 		return bs->irq;
 
-	err = clk_prepare_enable(bs->clk);
-	if (err)
-		return err;
 	bs->clk_hz = clk_get_rate(bs->clk);
 
 	err = bcm2835_dma_init(ctlr, &pdev->dev, bs);
 	if (err)
-		goto out_clk_disable;
+		return err;
 
 	/* initialise the hardware with the default polarities */
 	bcm2835_wr(bs, BCM2835_SPI_CS,
@@ -1396,8 +1393,6 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
 
 out_dma_release:
 	bcm2835_dma_release(ctlr, bs);
-out_clk_disable:
-	clk_disable_unprepare(bs->clk);
 	return err;
 }
 
@@ -1415,8 +1410,6 @@ static void bcm2835_spi_remove(struct platform_device *pdev)
 	/* Clear FIFOs, and disable the HW block */
 	bcm2835_wr(bs, BCM2835_SPI_CS,
 		   BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX);
-
-	clk_disable_unprepare(bs->clk);
 }
 
 static const struct of_device_id bcm2835_spi_match[] = {

drivers/spi/spi-bcm2835aux.c

@@ -512,7 +512,7 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev)
 	if (IS_ERR(bs->regs))
 		return PTR_ERR(bs->regs);
 
-	bs->clk = devm_clk_get(&pdev->dev, NULL);
+	bs->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(bs->clk)) {
 		err = PTR_ERR(bs->clk);
 		dev_err(&pdev->dev, "could not get clk: %d\n", err);
@@ -523,19 +523,11 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev)
 	if (bs->irq < 0)
 		return bs->irq;
 
-	/* this also enables the HW block */
-	err = clk_prepare_enable(bs->clk);
-	if (err) {
-		dev_err(&pdev->dev, "could not prepare clock: %d\n", err);
-		return err;
-	}
-
 	/* just checking if the clock returns a sane value */
 	clk_hz = clk_get_rate(bs->clk);
 	if (!clk_hz) {
 		dev_err(&pdev->dev, "clock returns 0 Hz\n");
-		err = -ENODEV;
-		goto out_clk_disable;
+		return -ENODEV;
 	}
 
 	/* reset SPI-HW block */
@@ -547,22 +539,18 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev)
 			       dev_name(&pdev->dev), host);
 	if (err) {
 		dev_err(&pdev->dev, "could not request IRQ: %d\n", err);
-		goto out_clk_disable;
+		return err;
 	}
 
 	err = spi_register_controller(host);
 	if (err) {
 		dev_err(&pdev->dev, "could not register SPI host: %d\n", err);
-		goto out_clk_disable;
+		return err;
 	}
 
 	bcm2835aux_debugfs_create(bs, dev_name(&pdev->dev));
 
 	return 0;
-
-out_clk_disable:
-	clk_disable_unprepare(bs->clk);
-	return err;
 }
 
 static void bcm2835aux_spi_remove(struct platform_device *pdev)
@@ -575,9 +563,6 @@ static void bcm2835aux_spi_remove(struct platform_device *pdev)
 	spi_unregister_controller(host);
 
 	bcm2835aux_spi_reset_hw(bs);
-
-	/* disable the HW block by releasing the clock */
-	clk_disable_unprepare(bs->clk);
 }
 
 static const struct of_device_id bcm2835aux_spi_match[] = {

drivers/spi/spi-cadence.c

@@ -581,31 +581,19 @@ static int cdns_spi_probe(struct platform_device *pdev)
 		goto remove_ctlr;
 	}
 
-	xspi->pclk = devm_clk_get(&pdev->dev, "pclk");
+	xspi->pclk = devm_clk_get_enabled(&pdev->dev, "pclk");
 	if (IS_ERR(xspi->pclk)) {
 		dev_err(&pdev->dev, "pclk clock not found.\n");
 		ret = PTR_ERR(xspi->pclk);
 		goto remove_ctlr;
 	}
 
-	ret = clk_prepare_enable(xspi->pclk);
-	if (ret) {
-		dev_err(&pdev->dev, "Unable to enable APB clock.\n");
-		goto remove_ctlr;
-	}
-
 	if (!spi_controller_is_target(ctlr)) {
-		xspi->ref_clk = devm_clk_get(&pdev->dev, "ref_clk");
+		xspi->ref_clk = devm_clk_get_enabled(&pdev->dev, "ref_clk");
 		if (IS_ERR(xspi->ref_clk)) {
 			dev_err(&pdev->dev, "ref_clk clock not found.\n");
 			ret = PTR_ERR(xspi->ref_clk);
-			goto clk_dis_apb;
-		}
-
-		ret = clk_prepare_enable(xspi->ref_clk);
-		if (ret) {
-			dev_err(&pdev->dev, "Unable to enable device clock.\n");
-			goto clk_dis_apb;
+			goto remove_ctlr;
 		}
 
 		pm_runtime_use_autosuspend(&pdev->dev);
@@ -679,10 +667,7 @@ static int cdns_spi_probe(struct platform_device *pdev)
 	if (!spi_controller_is_target(ctlr)) {
 		pm_runtime_set_suspended(&pdev->dev);
 		pm_runtime_disable(&pdev->dev);
-		clk_disable_unprepare(xspi->ref_clk);
 	}
-clk_dis_apb:
-	clk_disable_unprepare(xspi->pclk);
 remove_ctlr:
 	spi_controller_put(ctlr);
 	return ret;
@@ -703,8 +688,6 @@ static void cdns_spi_remove(struct platform_device *pdev)
 
 	cdns_spi_write(xspi, CDNS_SPI_ER, CDNS_SPI_ER_DISABLE);
 
-	clk_disable_unprepare(xspi->ref_clk);
-	clk_disable_unprepare(xspi->pclk);
 	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 

drivers/spi/spi-cavium-thunderx.c

@@ -49,16 +49,12 @@ static int thunderx_spi_probe(struct pci_dev *pdev,
 	p->regs.tx = 0x1010;
 	p->regs.data = 0x1080;
 
-	p->clk = devm_clk_get(dev, NULL);
+	p->clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(p->clk)) {
 		ret = PTR_ERR(p->clk);
 		goto error;
 	}
 
-	ret = clk_prepare_enable(p->clk);
-	if (ret)
-		goto error;
-
 	p->sys_freq = clk_get_rate(p->clk);
 	if (!p->sys_freq)
 		p->sys_freq = SYS_FREQ_DEFAULT;
@@ -82,7 +78,6 @@ static int thunderx_spi_probe(struct pci_dev *pdev,
 	return 0;
 
 error:
-	clk_disable_unprepare(p->clk);
 	pci_release_regions(pdev);
 	spi_controller_put(host);
 	return ret;
@@ -97,7 +92,6 @@ static void thunderx_spi_remove(struct pci_dev *pdev)
 	if (!p)
 		return;
 
-	clk_disable_unprepare(p->clk);
 	pci_release_regions(pdev);
 	/* Put everything in a known state. */
 	writeq(0, p->register_base + OCTEON_SPI_CFG(p));

drivers/spi/spi-davinci.c

@@ -915,14 +915,11 @@ static int davinci_spi_probe(struct platform_device *pdev)
 
 	dspi->bitbang.master = host;
 
-	dspi->clk = devm_clk_get(&pdev->dev, NULL);
+	dspi->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(dspi->clk)) {
 		ret = -ENODEV;
 		goto free_host;
 	}
-	ret = clk_prepare_enable(dspi->clk);
-	if (ret)
-		goto free_host;
 
 	host->use_gpio_descriptors = true;
 	host->dev.of_node = pdev->dev.of_node;
@@ -947,7 +944,7 @@ static int davinci_spi_probe(struct platform_device *pdev)
 
 	ret = davinci_spi_request_dma(dspi);
 	if (ret == -EPROBE_DEFER) {
-		goto free_clk;
+		goto free_host;
 	} else if (ret) {
 		dev_info(&pdev->dev, "DMA is not supported (%d)\n", ret);
 		dspi->dma_rx = NULL;
@@ -991,8 +988,6 @@ static int davinci_spi_probe(struct platform_device *pdev)
 		dma_release_channel(dspi->dma_rx);
 		dma_release_channel(dspi->dma_tx);
 	}
-free_clk:
-	clk_disable_unprepare(dspi->clk);
 free_host:
 	spi_controller_put(host);
 err:
@@ -1018,8 +1013,6 @@ static void davinci_spi_remove(struct platform_device *pdev)
 
 	spi_bitbang_stop(&dspi->bitbang);
 
-	clk_disable_unprepare(dspi->clk);
-
 	if (dspi->dma_rx) {
 		dma_release_channel(dspi->dma_rx);
 		dma_release_channel(dspi->dma_tx);

drivers/spi/spi-dw-bt1.c

@@ -269,43 +269,32 @@ static int dw_spi_bt1_probe(struct platform_device *pdev)
 
 	dws->paddr = mem->start;
 
-	dwsbt1->clk = devm_clk_get(&pdev->dev, NULL);
+	dwsbt1->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(dwsbt1->clk))
 		return PTR_ERR(dwsbt1->clk);
 
-	ret = clk_prepare_enable(dwsbt1->clk);
-	if (ret)
-		return ret;
-
 	dws->bus_num = pdev->id;
 	dws->reg_io_width = 4;
 	dws->max_freq = clk_get_rate(dwsbt1->clk);
-	if (!dws->max_freq) {
-		ret = -EINVAL;
-		goto err_disable_clk;
-	}
+	if (!dws->max_freq)
+		return -EINVAL;
 
 	init_func = device_get_match_data(&pdev->dev);
 	ret = init_func(pdev, dwsbt1);
 	if (ret)
-		goto err_disable_clk;
+		return ret;
 
 	pm_runtime_enable(&pdev->dev);
 
 	ret = dw_spi_add_host(&pdev->dev, dws);
 	if (ret) {
 		pm_runtime_disable(&pdev->dev);
-		goto err_disable_clk;
+		return ret;
 	}
 
 	platform_set_drvdata(pdev, dwsbt1);
 
 	return 0;
-
-err_disable_clk:
-	clk_disable_unprepare(dwsbt1->clk);
-
-	return ret;
 }
 
 static void dw_spi_bt1_remove(struct platform_device *pdev)
@@ -315,8 +304,6 @@ static void dw_spi_bt1_remove(struct platform_device *pdev)
 	dw_spi_remove_host(&dwsbt1->dws);
 
 	pm_runtime_disable(&pdev->dev);
-
-	clk_disable_unprepare(dwsbt1->clk);
 }
 
 static const struct of_device_id dw_spi_bt1_of_match[] = {

drivers/spi/spi-dw-mmio.c

@@ -340,29 +340,20 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 	if (dws->irq < 0)
 		return dws->irq; /* -ENXIO */
 
-	dwsmmio->clk = devm_clk_get(&pdev->dev, NULL);
+	dwsmmio->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(dwsmmio->clk))
 		return PTR_ERR(dwsmmio->clk);
-	ret = clk_prepare_enable(dwsmmio->clk);
-	if (ret)
-		return ret;
 
 	/* Optional clock needed to access the registers */
-	dwsmmio->pclk = devm_clk_get_optional(&pdev->dev, "pclk");
-	if (IS_ERR(dwsmmio->pclk)) {
-		ret = PTR_ERR(dwsmmio->pclk);
-		goto out_clk;
-	}
-	ret = clk_prepare_enable(dwsmmio->pclk);
-	if (ret)
-		goto out_clk;
+	dwsmmio->pclk = devm_clk_get_optional_enabled(&pdev->dev, "pclk");
+	if (IS_ERR(dwsmmio->pclk))
+		return PTR_ERR(dwsmmio->pclk);
 
 	/* find an optional reset controller */
 	dwsmmio->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev, "spi");
-	if (IS_ERR(dwsmmio->rstc)) {
-		ret = PTR_ERR(dwsmmio->rstc);
-		goto out_clk;
-	}
+	if (IS_ERR(dwsmmio->rstc))
+		return PTR_ERR(dwsmmio->rstc);
+
 	reset_control_deassert(dwsmmio->rstc);
 
 	dws->bus_num = pdev->id;
@@ -383,7 +374,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 	if (init_func) {
 		ret = init_func(pdev, dwsmmio);
 		if (ret)
-			goto out;
+			goto out_reset;
 	}
 
 	pm_runtime_enable(&pdev->dev);
@@ -397,9 +388,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 
 out:
 	pm_runtime_disable(&pdev->dev);
-	clk_disable_unprepare(dwsmmio->pclk);
-out_clk:
-	clk_disable_unprepare(dwsmmio->clk);
+out_reset:
 	reset_control_assert(dwsmmio->rstc);
 
 	return ret;
@@ -411,8 +400,6 @@ static void dw_spi_mmio_remove(struct platform_device *pdev)
 
 	dw_spi_remove_host(&dwsmmio->dws);
 	pm_runtime_disable(&pdev->dev);
-	clk_disable_unprepare(dwsmmio->pclk);
-	clk_disable_unprepare(dwsmmio->clk);
 	reset_control_assert(dwsmmio->rstc);
 }
 

drivers/spi/spi-fsl-dspi.c

@@ -1372,19 +1372,16 @@ static int dspi_probe(struct platform_device *pdev)
 		}
 	}
 
-	dspi->clk = devm_clk_get(&pdev->dev, "dspi");
+	dspi->clk = devm_clk_get_enabled(&pdev->dev, "dspi");
 	if (IS_ERR(dspi->clk)) {
 		ret = PTR_ERR(dspi->clk);
 		dev_err(&pdev->dev, "unable to get clock\n");
 		goto out_ctlr_put;
 	}
-	ret = clk_prepare_enable(dspi->clk);
-	if (ret)
-		goto out_ctlr_put;
 
 	ret = dspi_init(dspi);
 	if (ret)
-		goto out_clk_put;
+		goto out_ctlr_put;
 
 	dspi->irq = platform_get_irq(pdev, 0);
 	if (dspi->irq <= 0) {
@@ -1400,7 +1397,7 @@ static int dspi_probe(struct platform_device *pdev)
 				   IRQF_SHARED, pdev->name, dspi);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Unable to attach DSPI interrupt\n");
-		goto out_clk_put;
+		goto out_ctlr_put;
 	}
 
 poll_mode:
@@ -1432,8 +1429,6 @@ static int dspi_probe(struct platform_device *pdev)
 out_free_irq:
 	if (dspi->irq)
 		free_irq(dspi->irq, dspi);
-out_clk_put:
-	clk_disable_unprepare(dspi->clk);
 out_ctlr_put:
 	spi_controller_put(ctlr);
 
@@ -1458,7 +1453,6 @@ static void dspi_remove(struct platform_device *pdev)
 	dspi_release_dma(dspi);
 	if (dspi->irq)
 		free_irq(dspi->irq, dspi);
-	clk_disable_unprepare(dspi->clk);
 }
 
 static void dspi_shutdown(struct platform_device *pdev)

drivers/spi/spi-lantiq-ssc.c

@@ -932,14 +932,11 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
 	if (err)
 		goto err_host_put;
 
-	spi->spi_clk = devm_clk_get(dev, "gate");
+	spi->spi_clk = devm_clk_get_enabled(dev, "gate");
 	if (IS_ERR(spi->spi_clk)) {
 		err = PTR_ERR(spi->spi_clk);
 		goto err_host_put;
 	}
-	err = clk_prepare_enable(spi->spi_clk);
-	if (err)
-		goto err_host_put;
 
 	/*
 	 * Use the old clk_get_fpi() function on Lantiq platform, till it
@@ -952,7 +949,7 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
 #endif
 	if (IS_ERR(spi->fpi_clk)) {
 		err = PTR_ERR(spi->fpi_clk);
-		goto err_clk_disable;
+		goto err_host_put;
 	}
 
 	num_cs = 8;
@@ -1010,8 +1007,6 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
 	destroy_workqueue(spi->wq);
 err_clk_put:
 	clk_put(spi->fpi_clk);
-err_clk_disable:
-	clk_disable_unprepare(spi->spi_clk);
 err_host_put:
 	spi_controller_put(host);
 
@@ -1029,7 +1024,6 @@ static void lantiq_ssc_remove(struct platform_device *pdev)
 	hw_enter_config_mode(spi);
 
 	destroy_workqueue(spi->wq);
-	clk_disable_unprepare(spi->spi_clk);
 	clk_put(spi->fpi_clk);
 }
 

drivers/spi/spi-meson-spicc.c

@@ -820,7 +820,7 @@ static int meson_spicc_probe(struct platform_device *pdev)
 		goto out_host;
 	}
 
-	spicc->core = devm_clk_get(&pdev->dev, "core");
+	spicc->core = devm_clk_get_enabled(&pdev->dev, "core");
 	if (IS_ERR(spicc->core)) {
 		dev_err(&pdev->dev, "core clock request failed\n");
 		ret = PTR_ERR(spicc->core);
@@ -828,7 +828,7 @@ static int meson_spicc_probe(struct platform_device *pdev)
 	}
 
 	if (spicc->data->has_pclk) {
-		spicc->pclk = devm_clk_get(&pdev->dev, "pclk");
+		spicc->pclk = devm_clk_get_enabled(&pdev->dev, "pclk");
 		if (IS_ERR(spicc->pclk)) {
 			dev_err(&pdev->dev, "pclk clock request failed\n");
 			ret = PTR_ERR(spicc->pclk);
@@ -836,22 +836,10 @@ static int meson_spicc_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = clk_prepare_enable(spicc->core);
-	if (ret) {
-		dev_err(&pdev->dev, "core clock enable failed\n");
-		goto out_host;
-	}
-
-	ret = clk_prepare_enable(spicc->pclk);
-	if (ret) {
-		dev_err(&pdev->dev, "pclk clock enable failed\n");
-		goto out_core_clk;
-	}
-
 	spicc->pinctrl = devm_pinctrl_get(&pdev->dev);
 	if (IS_ERR(spicc->pinctrl)) {
 		ret = PTR_ERR(spicc->pinctrl);
-		goto out_clk;
+		goto out_host;
 	}
 
 	device_reset_optional(&pdev->dev);
@@ -878,31 +866,25 @@ static int meson_spicc_probe(struct platform_device *pdev)
 	ret = meson_spicc_pow2_clk_init(spicc);
 	if (ret) {
 		dev_err(&pdev->dev, "pow2 clock registration failed\n");
-		goto out_clk;
+		goto out_host;
 	}
 
 	if (spicc->data->has_enhance_clk_div) {
 		ret = meson_spicc_enh_clk_init(spicc);
 		if (ret) {
 			dev_err(&pdev->dev, "clock registration failed\n");
-			goto out_clk;
+			goto out_host;
 		}
 	}
 
 	ret = devm_spi_register_controller(&pdev->dev, host);
 	if (ret) {
-		dev_err(&pdev->dev, "spi host registration failed\n");
-		goto out_clk;
+		dev_err(&pdev->dev, "spi registration failed\n");
+		goto out_host;
 	}
 
 	return 0;
 
-out_clk:
-	clk_disable_unprepare(spicc->pclk);
-
-out_core_clk:
-	clk_disable_unprepare(spicc->core);
-
 out_host:
 	spi_controller_put(host);
 
@@ -916,9 +898,6 @@ static void meson_spicc_remove(struct platform_device *pdev)
 	/* Disable SPI */
 	writel(0, spicc->base + SPICC_CONREG);
 
-	clk_disable_unprepare(spicc->core);
-	clk_disable_unprepare(spicc->pclk);
-
 	spi_controller_put(spicc->host);
 }
 

drivers/spi/spi-meson-spifc.c

@@ -312,19 +312,13 @@ static int meson_spifc_probe(struct platform_device *pdev)
 		goto out_err;
 	}
 
-	spifc->clk = devm_clk_get(spifc->dev, NULL);
+	spifc->clk = devm_clk_get_enabled(spifc->dev, NULL);
 	if (IS_ERR(spifc->clk)) {
 		dev_err(spifc->dev, "missing clock\n");
 		ret = PTR_ERR(spifc->clk);
 		goto out_err;
 	}
 
-	ret = clk_prepare_enable(spifc->clk);
-	if (ret) {
-		dev_err(spifc->dev, "can't prepare clock\n");
-		goto out_err;
-	}
-
 	rate = clk_get_rate(spifc->clk);
 
 	host->num_chipselect = 1;
@@ -343,12 +337,11 @@ static int meson_spifc_probe(struct platform_device *pdev)
 	ret = devm_spi_register_controller(spifc->dev, host);
 	if (ret) {
 		dev_err(spifc->dev, "failed to register spi host\n");
-		goto out_clk;
+		goto out_pm;
 	}
 
 	return 0;
-out_clk:
-	clk_disable_unprepare(spifc->clk);
+out_pm:
 	pm_runtime_disable(spifc->dev);
 out_err:
 	spi_controller_put(host);
@@ -357,11 +350,7 @@ static int meson_spifc_probe(struct platform_device *pdev)
 
 static void meson_spifc_remove(struct platform_device *pdev)
 {
-	struct spi_controller *host = platform_get_drvdata(pdev);
-	struct meson_spifc *spifc = spi_controller_get_devdata(host);
-
 	pm_runtime_get_sync(&pdev->dev);
-	clk_disable_unprepare(spifc->clk);
 	pm_runtime_disable(&pdev->dev);
 }
 

drivers/spi/spi-microchip-core-qspi.c

@@ -518,30 +518,23 @@ static int mchp_coreqspi_probe(struct platform_device *pdev)
 		return dev_err_probe(&pdev->dev, PTR_ERR(qspi->regs),
 				     "failed to map registers\n");
 
-	qspi->clk = devm_clk_get(&pdev->dev, NULL);
+	qspi->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(qspi->clk))
 		return dev_err_probe(&pdev->dev, PTR_ERR(qspi->clk),
 				     "could not get clock\n");
 
-	ret = clk_prepare_enable(qspi->clk);
-	if (ret)
-		return dev_err_probe(&pdev->dev, ret,
-				     "failed to enable clock\n");
-
 	init_completion(&qspi->data_completion);
 	mutex_init(&qspi->op_lock);
 
 	qspi->irq = platform_get_irq(pdev, 0);
-	if (qspi->irq < 0) {
-		ret = qspi->irq;
-		goto out;
-	}
+	if (qspi->irq < 0)
+		return qspi->irq;
 
 	ret = devm_request_irq(&pdev->dev, qspi->irq, mchp_coreqspi_isr,
 			       IRQF_SHARED, pdev->name, qspi);
 	if (ret) {
 		dev_err(&pdev->dev, "request_irq failed %d\n", ret);
-		goto out;
+		return ret;
 	}
 
 	ctlr->bits_per_word_mask = SPI_BPW_MASK(8);
@@ -552,18 +545,11 @@ static int mchp_coreqspi_probe(struct platform_device *pdev)
 	ctlr->dev.of_node = np;
 
 	ret = devm_spi_register_controller(&pdev->dev, ctlr);
-	if (ret) {
-		dev_err_probe(&pdev->dev, ret,
-			      "spi_register_controller failed\n");
-		goto out;
-	}
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret,
+				     "spi_register_controller failed\n");
 
 	return 0;
-
-out:
-	clk_disable_unprepare(qspi->clk);
-
-	return ret;
 }
 
 static void mchp_coreqspi_remove(struct platform_device *pdev)
@@ -574,7 +560,6 @@ static void mchp_coreqspi_remove(struct platform_device *pdev)
 	mchp_coreqspi_disable_ints(qspi);
 	control &= ~CONTROL_ENABLE;
 	writel_relaxed(control, qspi->regs + REG_CONTROL);
-	clk_disable_unprepare(qspi->clk);
 }
 
 static const struct of_device_id mchp_coreqspi_of_match[] = {

drivers/spi/spi-microchip-core.c

@@ -539,22 +539,16 @@ static int mchp_corespi_probe(struct platform_device *pdev)
 		return dev_err_probe(&pdev->dev, ret,
 				     "could not request irq\n");
 
-	spi->clk = devm_clk_get(&pdev->dev, NULL);
+	spi->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(spi->clk))
 		return dev_err_probe(&pdev->dev, PTR_ERR(spi->clk),
 				     "could not get clk\n");
 
-	ret = clk_prepare_enable(spi->clk);
-	if (ret)
-		return dev_err_probe(&pdev->dev, ret,
-				     "failed to enable clock\n");
-
 	mchp_corespi_init(host, spi);
 
 	ret = devm_spi_register_controller(&pdev->dev, host);
 	if (ret) {
 		mchp_corespi_disable(spi);
-		clk_disable_unprepare(spi->clk);
 		return dev_err_probe(&pdev->dev, ret,
 				     "unable to register host for SPI controller\n");
 	}
@@ -570,7 +564,6 @@ static void mchp_corespi_remove(struct platform_device *pdev)
 	struct mchp_corespi *spi = spi_controller_get_devdata(host);
 
 	mchp_corespi_disable_ints(spi);
-	clk_disable_unprepare(spi->clk);
 	mchp_corespi_disable(spi);
 }
 

drivers/spi/spi-mtk-snfi.c

@@ -1332,42 +1332,6 @@ static const struct of_device_id mtk_snand_ids[] = {
 
 MODULE_DEVICE_TABLE(of, mtk_snand_ids);
 
-static int mtk_snand_enable_clk(struct mtk_snand *ms)
-{
-	int ret;
-
-	ret = clk_prepare_enable(ms->nfi_clk);
-	if (ret) {
-		dev_err(ms->dev, "unable to enable nfi clk\n");
-		return ret;
-	}
-	ret = clk_prepare_enable(ms->pad_clk);
-	if (ret) {
-		dev_err(ms->dev, "unable to enable pad clk\n");
-		goto err1;
-	}
-	ret = clk_prepare_enable(ms->nfi_hclk);
-	if (ret) {
-		dev_err(ms->dev, "unable to enable nfi hclk\n");
-		goto err2;
-	}
-
-	return 0;
-
-err2:
-	clk_disable_unprepare(ms->pad_clk);
-err1:
-	clk_disable_unprepare(ms->nfi_clk);
-	return ret;
-}
-
-static void mtk_snand_disable_clk(struct mtk_snand *ms)
-{
-	clk_disable_unprepare(ms->nfi_hclk);
-	clk_disable_unprepare(ms->pad_clk);
-	clk_disable_unprepare(ms->nfi_clk);
-}
-
 static int mtk_snand_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
@@ -1406,49 +1370,45 @@ static int mtk_snand_probe(struct platform_device *pdev)
 
 	ms->dev = &pdev->dev;
 
-	ms->nfi_clk = devm_clk_get(&pdev->dev, "nfi_clk");
+	ms->nfi_clk = devm_clk_get_enabled(&pdev->dev, "nfi_clk");
 	if (IS_ERR(ms->nfi_clk)) {
 		ret = PTR_ERR(ms->nfi_clk);
 		dev_err(&pdev->dev, "unable to get nfi_clk, err = %d\n", ret);
 		goto release_ecc;
 	}
 
-	ms->pad_clk = devm_clk_get(&pdev->dev, "pad_clk");
+	ms->pad_clk = devm_clk_get_enabled(&pdev->dev, "pad_clk");
 	if (IS_ERR(ms->pad_clk)) {
 		ret = PTR_ERR(ms->pad_clk);
 		dev_err(&pdev->dev, "unable to get pad_clk, err = %d\n", ret);
 		goto release_ecc;
 	}
 
-	ms->nfi_hclk = devm_clk_get_optional(&pdev->dev, "nfi_hclk");
+	ms->nfi_hclk = devm_clk_get_optional_enabled(&pdev->dev, "nfi_hclk");
 	if (IS_ERR(ms->nfi_hclk)) {
 		ret = PTR_ERR(ms->nfi_hclk);
 		dev_err(&pdev->dev, "unable to get nfi_hclk, err = %d\n", ret);
 		goto release_ecc;
 	}
 
-	ret = mtk_snand_enable_clk(ms);
-	if (ret)
-		goto release_ecc;
-
 	init_completion(&ms->op_done);
 
 	ms->irq = platform_get_irq(pdev, 0);
 	if (ms->irq < 0) {
 		ret = ms->irq;
-		goto disable_clk;
+		goto release_ecc;
 	}
 	ret = devm_request_irq(ms->dev, ms->irq, mtk_snand_irq, 0x0,
 			       "mtk-snand", ms);
 	if (ret) {
 		dev_err(ms->dev, "failed to request snfi irq\n");
-		goto disable_clk;
+		goto release_ecc;
 	}
 
 	ret = dma_set_mask(ms->dev, DMA_BIT_MASK(32));
 	if (ret) {
 		dev_err(ms->dev, "failed to set dma mask\n");
-		goto disable_clk;
+		goto release_ecc;
 	}
 
 	// switch to SNFI mode
@@ -1472,7 +1432,7 @@ static int mtk_snand_probe(struct platform_device *pdev)
 	ret = mtk_snand_setup_pagefmt(ms, SZ_2K, SZ_64);
 	if (ret) {
 		dev_err(ms->dev, "failed to set initial page format\n");
-		goto disable_clk;
+		goto release_ecc;
 	}
 
 	// setup ECC engine
@@ -1484,7 +1444,7 @@ static int mtk_snand_probe(struct platform_device *pdev)
 	ret = nand_ecc_register_on_host_hw_engine(&ms->ecc_eng);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register ecc engine.\n");
-		goto disable_clk;
+		goto release_ecc;
 	}
 
 	ctlr->num_chipselect = 1;
@@ -1496,12 +1456,10 @@ static int mtk_snand_probe(struct platform_device *pdev)
 	ret = spi_register_controller(ctlr);
 	if (ret) {
 		dev_err(&pdev->dev, "spi_register_controller failed.\n");
-		goto disable_clk;
+		goto release_ecc;
 	}
 
 	return 0;
-disable_clk:
-	mtk_snand_disable_clk(ms);
 release_ecc:
 	mtk_ecc_release(ms->ecc);
 	return ret;
@@ -1513,7 +1471,6 @@ static void mtk_snand_remove(struct platform_device *pdev)
 	struct mtk_snand *ms = spi_controller_get_devdata(ctlr);
 
 	spi_unregister_controller(ctlr);
-	mtk_snand_disable_clk(ms);
 	mtk_ecc_release(ms->ecc);
 	kfree(ms->buf);
 }

drivers/spi/spi-npcm-fiu.c

@@ -699,7 +699,7 @@ static int npcm_fiu_probe(struct platform_device *pdev)
 	struct spi_controller *ctrl;
 	struct npcm_fiu_spi *fiu;
 	void __iomem *regbase;
-	int id, ret;
+	int id;
 
 	ctrl = devm_spi_alloc_host(dev, sizeof(*fiu));
 	if (!ctrl)
@@ -737,7 +737,7 @@ static int npcm_fiu_probe(struct platform_device *pdev)
 
 	fiu->res_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 						    "memory");
-	fiu->clk = devm_clk_get(dev, NULL);
+	fiu->clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(fiu->clk))
 		return PTR_ERR(fiu->clk);
 
@@ -745,7 +745,6 @@ static int npcm_fiu_probe(struct platform_device *pdev)
 					       "nuvoton,spix-mode");
 
 	platform_set_drvdata(pdev, fiu);
-	clk_prepare_enable(fiu->clk);
 
 	ctrl->mode_bits = SPI_RX_DUAL | SPI_RX_QUAD
 		| SPI_TX_DUAL | SPI_TX_QUAD;
@@ -755,18 +754,11 @@ static int npcm_fiu_probe(struct platform_device *pdev)
 	ctrl->num_chipselect = fiu->info->max_cs;
 	ctrl->dev.of_node = dev->of_node;
 
-	ret = devm_spi_register_controller(dev, ctrl);
-	if (ret)
-		clk_disable_unprepare(fiu->clk);
-
-	return ret;
+	return devm_spi_register_controller(dev, ctrl);
 }
 
 static void npcm_fiu_remove(struct platform_device *pdev)
 {
-	struct npcm_fiu_spi *fiu = platform_get_drvdata(pdev);
-
-	clk_disable_unprepare(fiu->clk);
 }
 
 MODULE_DEVICE_TABLE(of, npcm_fiu_dt_ids);

drivers/spi/spi-orion.c

@@ -688,21 +688,17 @@ static int orion_spi_probe(struct platform_device *pdev)
 	devdata = devdata ? devdata : &orion_spi_dev_data;
 	spi->devdata = devdata;
 
-	spi->clk = devm_clk_get(&pdev->dev, NULL);
+	spi->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(spi->clk)) {
 		status = PTR_ERR(spi->clk);
 		goto out;
 	}
 
-	status = clk_prepare_enable(spi->clk);
-	if (status)
-		goto out;
-
 	/* The following clock is only used by some SoCs */
 	spi->axi_clk = devm_clk_get(&pdev->dev, "axi");
 	if (PTR_ERR(spi->axi_clk) == -EPROBE_DEFER) {
 		status = -EPROBE_DEFER;
-		goto out_rel_clk;
+		goto out;
 	}
 	if (!IS_ERR(spi->axi_clk))
 		clk_prepare_enable(spi->axi_clk);
@@ -795,8 +791,6 @@ static int orion_spi_probe(struct platform_device *pdev)
 	pm_runtime_disable(&pdev->dev);
 out_rel_axi_clk:
 	clk_disable_unprepare(spi->axi_clk);
-out_rel_clk:
-	clk_disable_unprepare(spi->clk);
 out:
 	spi_controller_put(host);
 	return status;
@@ -810,7 +804,6 @@ static void orion_spi_remove(struct platform_device *pdev)
 
 	pm_runtime_get_sync(&pdev->dev);
 	clk_disable_unprepare(spi->axi_clk);
-	clk_disable_unprepare(spi->clk);
 
 	spi_unregister_controller(host);
 	pm_runtime_disable(&pdev->dev);

drivers/spi/spi-pic32-sqi.c

@@ -593,33 +593,20 @@ static int pic32_sqi_probe(struct platform_device *pdev)
 	}
 
 	/* clocks */
-	sqi->sys_clk = devm_clk_get(&pdev->dev, "reg_ck");
+	sqi->sys_clk = devm_clk_get_enabled(&pdev->dev, "reg_ck");
 	if (IS_ERR(sqi->sys_clk)) {
 		ret = PTR_ERR(sqi->sys_clk);
 		dev_err(&pdev->dev, "no sys_clk ?\n");
 		goto err_free_host;
 	}
 
-	sqi->base_clk = devm_clk_get(&pdev->dev, "spi_ck");
+	sqi->base_clk = devm_clk_get_enabled(&pdev->dev, "spi_ck");
 	if (IS_ERR(sqi->base_clk)) {
 		ret = PTR_ERR(sqi->base_clk);
 		dev_err(&pdev->dev, "no base clk ?\n");
 		goto err_free_host;
 	}
 
-	ret = clk_prepare_enable(sqi->sys_clk);
-	if (ret) {
-		dev_err(&pdev->dev, "sys clk enable failed\n");
-		goto err_free_host;
-	}
-
-	ret = clk_prepare_enable(sqi->base_clk);
-	if (ret) {
-		dev_err(&pdev->dev, "base clk enable failed\n");
-		clk_disable_unprepare(sqi->sys_clk);
-		goto err_free_host;
-	}
-
 	init_completion(&sqi->xfer_done);
 
 	/* initialize hardware */
@@ -629,7 +616,7 @@ static int pic32_sqi_probe(struct platform_device *pdev)
 	ret = ring_desc_ring_alloc(sqi);
 	if (ret) {
 		dev_err(&pdev->dev, "ring alloc failed\n");
-		goto err_disable_clk;
+		goto err_free_host;
 	}
 
 	/* install irq handlers */
@@ -669,10 +656,6 @@ static int pic32_sqi_probe(struct platform_device *pdev)
 err_free_ring:
 	ring_desc_ring_free(sqi);
 
-err_disable_clk:
-	clk_disable_unprepare(sqi->base_clk);
-	clk_disable_unprepare(sqi->sys_clk);
-
 err_free_host:
 	spi_controller_put(host);
 	return ret;
@@ -685,10 +668,6 @@ static void pic32_sqi_remove(struct platform_device *pdev)
 	/* release resources */
 	free_irq(sqi->irq, sqi);
 	ring_desc_ring_free(sqi);
-
-	/* disable clk */
-	clk_disable_unprepare(sqi->base_clk);
-	clk_disable_unprepare(sqi->sys_clk);
 }
 
 static const struct of_device_id pic32_sqi_of_ids[] = {

drivers/spi/spi-pic32.c

@@ -730,17 +730,13 @@ static int pic32_spi_hw_probe(struct platform_device *pdev,
 		return pic32s->tx_irq;
 
 	/* get clock */
-	pic32s->clk = devm_clk_get(&pdev->dev, "mck0");
+	pic32s->clk = devm_clk_get_enabled(&pdev->dev, "mck0");
 	if (IS_ERR(pic32s->clk)) {
 		dev_err(&pdev->dev, "clk not found\n");
 		ret = PTR_ERR(pic32s->clk);
 		goto err_unmap_mem;
 	}
 
-	ret = clk_prepare_enable(pic32s->clk);
-	if (ret)
-		goto err_unmap_mem;
-
 	pic32_spi_hw_init(pic32s);
 
 	return 0;
@@ -837,7 +833,6 @@ static int pic32_spi_probe(struct platform_device *pdev)
 
 err_bailout:
 	pic32_spi_dma_unprep(pic32s);
-	clk_disable_unprepare(pic32s->clk);
 err_host:
 	spi_controller_put(host);
 	return ret;
@@ -849,7 +844,6 @@ static void pic32_spi_remove(struct platform_device *pdev)
 
 	pic32s = platform_get_drvdata(pdev);
 	pic32_spi_disable(pic32s);
-	clk_disable_unprepare(pic32s->clk);
 	pic32_spi_dma_unprep(pic32s);
 }
 

drivers/spi/spi-pl022.c

@@ -2168,19 +2168,13 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
 	dev_info(&adev->dev, "mapped registers from %pa to %p\n",
 		&adev->res.start, pl022->virtbase);
 
-	pl022->clk = devm_clk_get(&adev->dev, NULL);
+	pl022->clk = devm_clk_get_enabled(&adev->dev, NULL);
 	if (IS_ERR(pl022->clk)) {
 		status = PTR_ERR(pl022->clk);
 		dev_err(&adev->dev, "could not retrieve SSP/SPI bus clock\n");
 		goto err_no_clk;
 	}
 
-	status = clk_prepare_enable(pl022->clk);
-	if (status) {
-		dev_err(&adev->dev, "could not enable SSP/SPI bus clock\n");
-		goto err_no_clk_en;
-	}
-
 	/* Initialize transfer pump */
 	tasklet_init(&pl022->pump_transfers, pump_transfers,
 		     (unsigned long)pl022);
@@ -2240,8 +2234,6 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
 	if (platform_info->enable_dma)
 		pl022_dma_remove(pl022);
  err_no_irq:
-	clk_disable_unprepare(pl022->clk);
- err_no_clk_en:
  err_no_clk:
  err_no_ioremap:
 	amba_release_regions(adev);
@@ -2268,7 +2260,6 @@ pl022_remove(struct amba_device *adev)
 	if (pl022->host_info->enable_dma)
 		pl022_dma_remove(pl022);
 
-	clk_disable_unprepare(pl022->clk);
 	amba_release_regions(adev);
 	tasklet_disable(&pl022->pump_transfers);
 }

drivers/spi/spi-rockchip.c

@@ -782,42 +782,30 @@ static int rockchip_spi_probe(struct platform_device *pdev)
 		goto err_put_ctlr;
 	}
 
-	rs->apb_pclk = devm_clk_get(&pdev->dev, "apb_pclk");
+	rs->apb_pclk = devm_clk_get_enabled(&pdev->dev, "apb_pclk");
 	if (IS_ERR(rs->apb_pclk)) {
 		dev_err(&pdev->dev, "Failed to get apb_pclk\n");
 		ret = PTR_ERR(rs->apb_pclk);
 		goto err_put_ctlr;
 	}
 
-	rs->spiclk = devm_clk_get(&pdev->dev, "spiclk");
+	rs->spiclk = devm_clk_get_enabled(&pdev->dev, "spiclk");
 	if (IS_ERR(rs->spiclk)) {
 		dev_err(&pdev->dev, "Failed to get spi_pclk\n");
 		ret = PTR_ERR(rs->spiclk);
 		goto err_put_ctlr;
 	}
 
-	ret = clk_prepare_enable(rs->apb_pclk);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Failed to enable apb_pclk\n");
-		goto err_put_ctlr;
-	}
-
-	ret = clk_prepare_enable(rs->spiclk);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Failed to enable spi_clk\n");
-		goto err_disable_apbclk;
-	}
-
 	spi_enable_chip(rs, false);
 
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)
-		goto err_disable_spiclk;
+		goto err_put_ctlr;
 
 	ret = devm_request_threaded_irq(&pdev->dev, ret, rockchip_spi_isr, NULL,
 			IRQF_ONESHOT, dev_name(&pdev->dev), ctlr);
 	if (ret)
-		goto err_disable_spiclk;
+		goto err_put_ctlr;
 
 	rs->dev = &pdev->dev;
 	rs->freq = clk_get_rate(rs->spiclk);
@@ -843,7 +831,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
 	if (!rs->fifo_len) {
 		dev_err(&pdev->dev, "Failed to get fifo length\n");
 		ret = -EINVAL;
-		goto err_disable_spiclk;
+		goto err_put_ctlr;
 	}
 
 	pm_runtime_set_autosuspend_delay(&pdev->dev, ROCKCHIP_AUTOSUSPEND_TIMEOUT);
@@ -937,10 +925,6 @@ static int rockchip_spi_probe(struct platform_device *pdev)
 		dma_release_channel(ctlr->dma_tx);
 err_disable_pm_runtime:
 	pm_runtime_disable(&pdev->dev);
-err_disable_spiclk:
-	clk_disable_unprepare(rs->spiclk);
-err_disable_apbclk:
-	clk_disable_unprepare(rs->apb_pclk);
 err_put_ctlr:
 	spi_controller_put(ctlr);
 
@@ -950,13 +934,9 @@ static int rockchip_spi_probe(struct platform_device *pdev)
 static void rockchip_spi_remove(struct platform_device *pdev)
 {
 	struct spi_controller *ctlr = spi_controller_get(platform_get_drvdata(pdev));
-	struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);
 
 	pm_runtime_get_sync(&pdev->dev);
 
-	clk_disable_unprepare(rs->spiclk);
-	clk_disable_unprepare(rs->apb_pclk);
-
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);